Discussion. i of this FAQ. Engine Runs Unevenly (Surges) Engine not broken-in. Right around 700 rpm. 1; 2; First Prev 2 of 2 Go to page. If you look inside the throttle body there's a hole in the upper portion and that is what needs to be cleaned out. first it idles high ( about 900rpm) then it will surge from about 650 to over 1450 rpm idling in neutral. Quite often surging like this is caused by not enough air getting passed the butterfly valve in the throttle body when the butterfly is closed. It is small, but definitely present. Also for a few months it has had a surge condition that is also intermittent. Now that there's a new alternator, it doesn't have to run as high. Sensor #1 was sluggish and intermittent. Napanic Dodge Dakota JOIN HERE 1/13/2009 18:37:04: RE: Idle Surge IP: Logged Message: There is an Idle air intake port located on the very front of the throttle body right near the intake manifold. It may be worn down or restricted in some way. According to the customer the idle would surge, especially when first started and would even stutter a bit when put into gear. the motor will occasionally surge at crusing speeds between 40 and 60 mph. Sometimes it will stall other times it will catch itself and surge up to 2000 rpm. If I get on the throttle slowly it accelerates fine/normal with no sign of surge or problem. After shutting it off I am able to restart and usually regain complete throttle response. The surge is intermittent, and usually is more prominent in the summer, after the engine has gotten hot, driven for more than 10 minutes. If I hold it steady the surge is persistent but once throttle is applied/depressed the surge becomes non existent. The engine started to surge and at times back fired. This takes place with hot or cold engine. One good tip to remember before going through the steps below is to have the Cat pump parts list handy in case spare parts need to be ordered. Automatic Choke: Make sure the automatic choke is working properly (wire to the coil attached, choke properly adjusted and opens the butterfly valve in the top of the carburetor as the engine warms up). When a lawn mower surges, it sounds as if the engine reaches full speed, only to decelerate quickly. The idle circuit is a crucial component to overall street engine operation and properly adjusting the idle mixture goes a long way toward improving throttle response, fuel mileage, and emissions. OK,very odd problem here. Say the car idles normally at approx 700/800rpm. If the idle improves, it is worth removing the Throttle body, disassembling and cleaning thoroughly. Displays an intermittent stumble or miss; Engine may start and then stall; Engine may appear to drive fine but surge at idle; Causes. Surging: this happens after starting the car. Could this have been the cause of the intermittent idle surging? I might re-iterate that the surging is not always present, and starts and stops with no apparent rhyme or reason. It's intermittent, so been frustrating. If the tachometer is rock steady, and the shaking seems worse in gear than out of gear, that’s a pretty good indication of a bad motor mount. This takes place with hot or cold engine. i had the harness replaced two days ago having to pay only labor as the dealer goodwilled the part. Hesitation or surge at idle or on acceleration is a common symptom of code P0114. When bike is cool, shut off handle bar switch. The idle sounds fine, then gets rough with some sputtering and white smoke, nothing major. Sometimes it dips low enough to stall. Its basically just a variable resistor made to look like a gas pedal. As the title says, my truck has a intermittent surge in the idle. While it would start responding at higher RPM's (over about 2K), at idle RPMs it alternated between sitting there dead as a door-nail. The throttle valve is connected to the gas pedal via a cable. Intermittent rough idle and CEL: delta265: 3rd gen T4Rs: 5: 09-19-2012 11:01 PM: Intermittent Sputter when idle: changedsoul: 3rd gen T4Rs: 6: 02-04-2012 11:59 PM '96 Limited - intermittent/random idle problem: not2tired: 3rd gen T4Rs: 10: 01-09-2011 12:53 AM: Intermittent rough idle: T4R4ME: Classic T4Rs: 2: 01-10-2009 02:13 AM: intermittent. A surging generator is an indication that there is something wrong with your equipment. The first is that you have to determine the main reason why a code sets. Remedy: Replace the crankshaft or camshaft sensor as required. Idle jumps up 50-100 rpm. The general impression of the OptiMax engine is that below a fast idle speed, say 1,000-RPM, the engine is a net consumer of current. 9 Cummins? What you will find on all the Cummins equipped trucks since 2003, when the electric solenoid type injectors were introduced, is a tendency to build up soft desposits on the injector tips. It has done this for. Another consistent symptom seems to be when the A/C is running the car will idle high and set a code for either the TPS or MAF, but with the A/C off the car runs fine, no high idle, no shifting problems other than not kicking down properly into passing gear and very sight surging under hard acceleration. For months, could feel a slight surge - almost imperceptible, with no movement of the tach. Let the car idle for 5 minutes. So fuel pressure. Hi all, Ive been troubleshooting a engine surge for awhile now that only occurs during winter, usually below 0. When I shift out of park it still does it and wants to lung through the brakes. That would reverse if the alternator is going bad. when i start the car the hunting starts then after 1 - 2 mins it settles down. A surging generator is an indication that there is something wrong with your equipment. *Pedal down *Nothing *Sudden surge/jerk of engine response It happens intermittently & usually for the duration of the trip. According to the customer the idle would surge, especially when first started and would even stutter a bit when put into gear. if i rev the motor and let go of the throttle it will stop running, sometimes at a. DEFINITION: Engine runs unevenly at idle. Joined Mar 18, 2010 · 59 Posts. Underdrive pulleys may also aggravate the situation. for me, the surge is intermittent, but very common. A higher idle RPM can reduce stalling and the sensation of closed throttle compression braking. 2 Intermittent hard start & idle Help, Advice, Owners' Discussion and DIY Tutorials on Volvo XC90s. With swings in temps from normal (hot/cold), Marginal seals in the filter head can have a slight leak. About two cranks before the engine started (not much at all), and then it fired up with high idle. Ive tried serching for this, but im not even sure what to put in the search field; I have a 93 Loyale EA82 5 speed. The best way to explain this, its like I am pulling a trailer and then it is cut loose. There is a topic that addresses this issue. Searching, I. If this is the case the. Last thing is a vacuum leak. Re: stx 15f idle problems and running rough **update** - first off thanks for all your help guys ! it seems like the problem is solved now. My car intermittently has an idle surge only in second gear that begins to surge at 2,000 up to 2,600 RPM. Had a problem over a year ago on my 02 Tribute (V6 ES) and paid the diag fee and another $180. We will start with a possible cause that would not require transmission removal. I presume that other than the surges at idle, it runs fine otherwise when in D or R?. Although the RPMs raise when it surges it does not change the vehicle speed. Then, after. Goes up to 48v occasionally. Idle is set to approx 1800 with about -0. Idle jumps up 50-100 rpm. 1) Intermittent Idle Speed Since the idle air control valve is supposed to manage the idle speed of the engine, a bad valve will certainly throw that out of whack. Re: Hilux D4D Intermittent Rough Rev and Idle by mattwhite on Mon, 30 Dec 2013 11:10 +0000 I was a little hesitant to jump in and make myself look stupid but I've had a few sets out and never known a difference. Start and idle the engine for 5 minutes, then off for five, then out for a drive. The idle surge has not been as frequent as of late, though one thing that has happened quite a few times is that when the motor is warming up, just after starting driving, it has almost stalled (and today it actually did stall) when coming up to a set of red lights. I have a 2014 Equinox 2LT with just over 42,000 miles. Low idle or stall. The engine light flashed on and I checked the code p0300. This isn’t easy, as there may be quite a few possible reasons why trouble codes are stored. 7 TBI intermittent poor idle/slight misfire FusionBB™ Version 2. The problem comes and goes seemingly without rhyme or reason. At idle, the engine RPM doesn't stay still, it goes up and down probably 300 RPM or so. GT40 intermittent idle problem. Just because you've replaced the ICM, does not mean it isn't at fault. The Air Idle. Signs of this sort of wear show up in an unusually low engine RPM. On test drive when stopped at a stop sign the idle will be 500 but almost stalls. I believe it is due to following maintenance issues I have recently addressed, based on reading various postings in this forum. Joined Mar 18, 2010 · 59 Posts. Light throttle or steady state cruise, getting a bucking / surge / bogging / pumping brake feeling. Loose electrical connections. Take away the spacer and with the 5. Then it surged while idling for 10-15 seconds consistently rising and falling a few 100 rpms. Either condition may be severe enough to stall the engine. 2009 Chevrolet Silverado TSBs 460 Silverado Technical Service Bulletins. and when i lay into the throttle it blows faint black but seems to. When a Ford Focus exhibits problems with running roughly at idle speeds, auto mechanics generally look first to either a vacuum problem, or more often, a problem with water getting into the Differential Pressure Feedback Sensor (DPFE), a part of the EGR (exhaust gas recirculation system). 106 TU9M Bosch MA 3. For discussion: I have an intermittent engine surge/hunt at wide open throttle. 5-2 times per second over the course of 10+ seconds creating this "wahh wahh wahh wahh wahh" until I either accelerate from the light, double foot the pedals to manually increase the fuel flow, or it solves itself (which I can't. This may be caused by the EGR sensor sticking, causing the EGR valve to stay slightly open, and diagnostic testing must be conducted. If the car shifts from first to second, and then stays in second, never shifting to third or OD it may have a number 2 shift solenoid that is failing to activate, or failing. Anybody know what to try next? Check engine light is not on. Due to greater engine load and lower engine speeds, rough (shaking) idle is usually more pronounced in “Drive” when sitting at a stop light. Sounds & feels like its dropping a cylinder most of the time but the odd time it kicks back into life. It is very easy to do, just two bolts and a connector. Car idled decently before but the cam has caused weird intermittent idling problems. After shutting it off I am able to restart and usually regain complete throttle response. We're talking about engines that start easily and accelerate smoothly, but then, after a few minutes at a steady speed, either surge in speed or misfire, causing the car to "buck. As the antifreeze warms up, the pellet expands and is supposed to slowly seal this intentionally created vacuum leak. I have an intermittent no throttle response problem and the engine goes into a safe mode. Low idle or stall. Jump to Latest Follow 21 - 29 of 29 Posts. The greater the load (vehicle is in operation), the less the vacuum. From what the MM is telling me I've got 4psi at idle of Fuel Press and 110-120 psi of line pressure. 3L V8 intermittent idle surge & rough i Feb 17 2017, 5:21am I have a 2001 5. Hesitation or surge at idle or on acceleration is a common symptom of code P0114. What is the idle rpm normally? at 600? or lower than that and fluctuating up to ? You mentioned that you already changed "all" the sensors and the sparkplugs. These idle up speeds may occur with no input from the customer. Now, the surge is very noticeable and the tach sometimes moves between 700-1000 rpms. ) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more. From: Stu. However it is not activated by default. If I hold it steady the surge is persistent but once throttle is applied/depressed the surge becomes non existent. Either condition may be severe enough to stall the engine. Re: 1999 Silverado 5. If the engine is also running at a higher than expected idle this is a good indication of a vacuum leak as well. My regular cruise rpm of 3000 there seems to be no surging, and it was only when i kicked it up to 3100-3200 that i noticed very intermittent "once every 5-10 min" of the momentary rpm drop. The appropriate fuel system cleaner added to the fuel tank can open clogged passages in injectors and carburetors that may be causing the surge. This may be caused by the EGR sensor sticking, causing the EGR valve to stay slightly open, and diagnostic testing must be conducted. My 2005 LLY recently started exhibiting a problem: very intermittent, very rough idle. It sounds like i'm bliping the throttle at stop lights. Problem Description The Ford Expedition is known for intermittent rough idling, which may be accompanied by illumination of the check engine light, and poor fuel mileage. This issue showed up after I replaced the spark-plugs to correct a mis-fire. Mazda/Ford Idle surge If my site is a value to you I need your help could you please donate so I can keep this site free to everyone. Remove the Air Filter Duct at the Throttle Valve end. I believe it is probably the mapping of the fuel in the ECM. It sounds kind of like a lope tune and the truck shakes a bit. 3L V8 intermittent idle surge & rough i Feb 17 2017, 5:21am I have a 2001 5. Now its just low power and I see The right side has no spark. This got me thinking it was the alternator or the charging circuit even though it functioned and tested fine. It is generally located above the water inlet. Joined Mar 21, 2005 · 1,563 Posts. I cranked it the AM and it ran fine at idle and full speed. 00 or so to replace the idle control valve. The idle sounds fine, then gets rough with some sputtering and white smoke, nothing major. Engine Runs Unevenly (Surges) Engine not broken-in. So the car is surging at idle really bad sometimes when you pop the throttle and let it return to idle it will actually shut off. Say the car idles normally at approx 700/800rpm. If you have a Surging idle on Honda, read this post. Jump to Latest Follow 1 - 8 of 8 Posts. Since the ECU is not quite as smart as you are and has a very microscopic view of its world, its behavior may seem very strange to you, but seem perfectly normal to the computer. Surging, no power, intermittent rough idle. While running, I have pulled. The pressure to deliver fuel from the high pressure pump to the rail/injectors at cranking is around 200 bars, at idle the pressure should be around 300 bars. Many things can cause an idle. i have issue with e150 1992 5. When idling in neutral or drive while the engine is cold, the engine idles very smooth. When the vehicle is running the pressure ranges from 1200 bar to 2000 bar. 1992 Chevy K1500 5. When it was sitting there dead, the idle quality went to poop. We will start with a possible cause that would not require transmission removal. Playing around a little (engine warm/hot by now) I discovered some seeming "new" problem. It's not a huge up and down surge but you can sure hear it when you stand by the truck when it's idling and it's annoying, but once you get in and step on the throttle the surging. My A/C is working great, (got a rebuilt compressor installed last summer) but recently I've developed an occasional idle surge when the air is on, usually on a hot day after I've been driving a while. When I accelerate and hold a steady pedal, I will feel a surge back to correct horsepower. 0 diesel 4x4 dually auto with 70K. New injectors no codes. When an engine's computer can "hunt" or "surge" at cruising or idle speeds it is searching for program compliance, there is a problem elsewhere in the system. Intermittent rough idle (primarily cold but also warm) including dipping (from 650RPM to maybe 450RPM), shaking, sputtering out the pipe 2. when i cold start my 89' t5 coupe it will run and idle great till it begins to warm up then it will start having a surging idle. Measure voltage across the pins, not between pins and ground! You should see around 0. Mazda/Ford Idle surge If my site is a value to you I need your help could you please donate so I can keep this site free to everyone. Low idle or stall. Signs of surging include: • Lights flicker between very bright and dim at a rapid pace • Machinery may run at varied speeds, making sudden shifts between quick and slow. The engine started to surge and at times back fired. Remedy: Replace the crankshaft or camshaft sensor as required. What could cause my AODE (or 4R70W) to lose 3rd gear, and Overdrive? This could be a small or large problem. - As soon as it comes off high idle, it goes away instantly. The best way to explain this, its like I am pulling a trailer and then it is cut loose. Intermittent Service Stabilitrak. 1 of 2 Go to page. Sounds & feels like its dropping a cylinder most of the time but the odd time it kicks back into life. Jump to Latest Follow 81 - 100 of 130 Posts. Discussion Starter • #1 • Sep. It surges at a rate of about one or two cycles per second. It is small, but definitely present. I purchased the car a little while ago and the idle issue started a few weeks after that. The general impression of the OptiMax engine is that below a fast idle speed, say 1,000-RPM, the engine is a net consumer of current. 2009 Jeep Patriot Intermittent Misfires FIXED! × Help us help you. It will cause the idle speed to randomly fluctuate to different speeds rather than stay at one constant speed. This extra air is what raises the idle. This is starting to sound more like a MAF issue, or possibly TPS. E30 hunting idle and surging acceleration 17-03-13, 07:00 PM. Diagnostic trouble codes (DTCs) P0505, P0506, or P061B could be present and the Check Engine lamp may turn on. This may be caused by the EGR sensor sticking, causing the EGR valve to stay slightly open, and diagnostic testing must be conducted. 2L V6 engine and 120,000 miles. 1; 2; First 2 of 2 Go to page. If this is the case the. It is the silver thing between the mass air flow sensor and the intake manifold. Lawn mower engine surging is a right pain in the Jacksie, it's an engine that runs erratically, revs up and down by itself uncontrollably. We're talking about engines that start easily and accelerate smoothly, but then, after a few minutes at a steady speed, either surge in speed or misfire, causing the car to "buck. Location: Main Index » Forum Index » Trucks-Vans-SUV » 88-98 Fullsize Trucks, Vans, Suburbans, Blazers, Tahoes » 93 5. Say the car idles normally at approx 700/800rpm. Cummins ISX Intermittent lope # Idle Discussion in 'Trucks [ Eighteen Wheelers ]' started by Displaced Yooper, Feb 1, 2011. 7: while driving truck it started bucking, rpms rapidly going up and down. 2001 ETC Intermittent High Idle. The fuel pressure is 36 psi with the key on. Intermittent rough idle (primarily cold but also warm) including dipping (from 650RPM to maybe 450RPM), shaking, sputtering out the pipe 2. Sometimes it dips low enough to stall. 106 TU9M Bosch MA 3. I have a 2004 EX with 103km and within the last month I have noticed that when I am at a stop light and the engine is on idle,there is sometimes a surge in rpm and the. Then push dash start button once, let it run through its cycling process, then push it again to shut off,then push again, to turn on. The BMW 1200RT (as well as most modern vehicles) have 4 wire steppers (2 wires for high & 2 wires for low) so there is no actual stepper pintle position sent back to the fueling computer. I have been having this low idle problem where the bike does not run steady at idle, it surges always below 1000 rpm. As long as you are in stock tune that is, with no sign of a tuner having been used. If I place my '94 LWB EFI 4. This is starting to sound more like a MAF issue, or possibly TPS. The tac always stays steady and does not fluctuate with the idle at all. intermittent idle surge with warm engine Sign in to follow this. Greetings all, Ive been having this occasional issue with the car surging at idle. Fuel pressure regulator is intragle with the fuel filter and I am getting constant 42 lbs fuel pressure which is a Little low but not bad. On fast idle, thats Ok. and when i lay into the throttle it blows faint black but seems to have pretty good mpg if im easy on it. Fuel pressure is good. If you have a meter you can check the throttle position sensor voltage going back to the ecm. This Passat surges or chugs at idle more so with lower engine temp. The first is that you have to determine the main reason why a code sets. Disconnect fuel injectors, one at a time, until the idle drops below 1000rpm. Intermittent rough idle 20-04-2012, 12:23 AM Hey all, this one just started after a 1000k drive to the coast last week for a family emergency, the rough idle comes and goes, and when it's occurring when idling say at the lights and moving it feels as tho it chugs, I had my 80k service done just over 3000k ago. DEFINITION: Engine runs unevenly at idle. By Micahgc, But on my loyale I also had a surging idle, it would go really high, then really low, and I would also hear that click noise. 1991 F-150, 302, intermittent high idle. Releases have moved. Will see tomorrow if the flash they did fixes the surging idle. Soak a rag in Carburetter Cleaner and clean both faces of the Throttle Valve butterfly and venturi duct as far as you can get with the rag. I started to till the garden and it starts to surge and at time backfires. mostly a stock bike though. intermittent idle surge with warm engine Sign in to follow this. When it did idle the idle wasn't very stabile. automatic transmission. Make sure you spray around for vacuum leaks with the IAC unplugged. Car idled decently before but the cam has caused weird intermittent idling problems. lowandslow. 2001 ETC Intermittent High Idle. Greetings all, Ive been having this occasional issue with the car surging at idle. Signs of this sort of wear show up in an unusually low engine RPM. It's located to the left side of the throttle body as you look at it. sensor is only a tenner and so is a cheap place to start :-) Symptoms are that idle speed is normal when engine is cold and warming up, but any warmer than that and the idle speed intermittently rises to about 2000 rpm, then falls back to the normal level again. Fuel filter has been changed. I have a 1994 E350 15 passenger shuttle bus with a 460/7. If power is left up it will continue to surge from idle to high power then settle on idle eventually. My car intermittently has an idle surge only in second gear that begins to surge at 2,000 up to 2,600 RPM. After the service, I noticed a distinct "rough idle" to my engine. And when I say "rough" I mean REAL rough - bucking bronco style (the whole truck shook very hard). The surge can be several hundred rpms. It may be worn down or restricted in some way. THIS IS THE KNOWN STALL/SHUDDER ISSUE THAT MULTIPLE ECOBOOST MOTORS ON F150S ARE EXPERIENCING IN RAINY DAMP CONDITIONS. If I get on the throttle slowly it accelerates fine/normal with no sign of surge or problem. Intermittent idle surge. Disconnect fuel injectors, one at a time, until the idle drops below 1000rpm. DRD_MIKE · Registered. 4 liter engine that was stalling at idle and had a surging condition at lower engine rpms. When it did idle the idle wasn't very stabile. Then use a volt meter to get a static voltage reading on the battery which should be about 12. By Micahgc, But on my loyale I also had a surging idle, it would go really high, then really low, and I would also hear that click noise. The surge originally intermittent started getting more regular and I noticed at night the radio light would fluctuate noticeably with the idle surge. Anyway, I bought something made by Gumout a month ago but I never used it and I think it was close to $10. Other than that, it runs great. Very intermittent and is not coolant temperature related. 5 intermittent Rough idle, Stall, Powerless. Last thing is a vacuum leak. At that range there is no load at all. Engine idle is dead nuts what FSM says it should be at. 2009 Chevrolet Silverado TSBs 460 Silverado Technical Service Bulletins. Ive had the car in 3 times for this. It sounds like i'm bliping the throttle at stop lights. 1 of 2 Go to page. If she turns the van off and restarts it then it is fine (for a while). 1; 2; First Prev 2 of 2 Go to page. If the throttle is increased the problem go's away, if the engine is allowed to idle the problem go's away. 3L, occurs during the cold at idle. Ford Explorer | Intermittent misfire. What Does Idle Control Do On A Generator. Anybody know what to try next? Check engine light is not on. When hot idle speed is too high, surging at idle. other things improved with the clean out is spool up. Spark Plugs are new but are completely black. Engine serial number 0M033393 Throttle body injection The symptons are: When I start the. With swings in temps from normal (hot/cold), Marginal seals in the filter head can have a slight leak. earlier it didnt suck and it did not surge. Oil change done. DEFINITION: Engine runs unevenly at idle. GT40 intermittent idle problem. Troubleshooting a pressure washer, whether it is the surge power or a clogged nozzle, is something every car wash owner has to become accustomed to in their daily routine. Sounds & feels like its dropping a cylinder most of the time but the odd time it kicks back into life. Truck is not producing a fault code. Never got worse, never stayed for more than a day or two, never caused me more than idle concern, never did more than ask Eddy if he knew of it. com and I will send it to you. Noticed a different ‘burble’ when slowing down for traffic & then the engine was erratic up to 3500RPM on small throttle openings. 3rd pulls to 4000. 0 intermittent surging/rapid idle - Okay, so I know a few of you have had surging issues and I have a video of mine that I will post. if you shut off the engine, it will take a 20 seconds or so to start, when it does, it will idle normally. You might also spray the throttle shaft bearing while you're at it, and see how much they can wiggle. It has done this for. The rattling is road noise not the truck. Thread starter EYY; Start date Mar 9, 2016; Prev. Engine serial number 0M033393 Throttle body injection The symptons are: When I start the. The motor surges when at idle, revs up, revs down, up, down. At idle, the manifold evacuates the vacuum system through this valve. White smoke out tail pipe. For very small leaks I believe it is possible for the car to adapt to the extra air entering over time and increase the fuel delivery on idle, thus leading to a high idle. This high idle can be used. Re: 1999 Silverado 5. That is, it needs more current to run than it can generate from its charging circuit, therefore it is draining the battery at those speeds. It sounds kind of like a lope tune and the truck shakes a bit. 0DOHC Rough/Surging Idle Post by rthornii » Mon Apr 27, 2009 11:50 am I have an 02 Sable 3. When it started responding, idle quality immediately improved. The SAI will turn on a second time and after it turns off, the car will bog slightly in idle. Make sure you spray around for vacuum leaks with the IAC unplugged. My recommendation, if you're having a rough idle and can get it going like I talked about, chances are it's the fuel system. Sometimes at a stoplight in gear and truck wants to lunge forward. especially after a swap. I have replaced upper and lower intake gaskets, plugs (w/motorcraft platinum)and verified coils are good. And it even does it as you are going down the road, but it doesn't seem as bad then. When hot idle speed is too high, surging at idle. a weak battery can start the truck fine but, at the same time, cause an an erratic/ surging idle at the first cold start in the morning. This engine design is COP (coil on plug) with individual coils for each plug. If you see those numbers, you're fuel pump is okay. When a cold engine (first start of day or shut down more than 2hrs) is started and driven, I have zero problems. Re: intermittent stalling issues (surging idle)? « Reply #9 on: November 30, 2009, 09:37:02 pm » Make sure engine is at op temp, IGN OFF, wait 20 seconds, make sure system is setup to run the self test, start engine and check the KOER codes. When I shift out of park it still does it and wants to lung through the brakes. Jump to Latest Follow 1 - 20 of 20 Posts. It does not seem to be effected when the rpm's are any higher then idle. Surging at idle/rpms up and down then dies 35 Answers. Signs of this sort of wear show up in an unusually low engine RPM. The motor surges when at idle, revs up, revs down, up, down. If you have a meter you can check the throttle position sensor voltage going back to the ecm. If I hold it steady the surge is persistent but once throttle is applied/depressed the surge becomes non existent. If the IAC is acting up, could that cause my intermittent high or surging idle? Could be but most of the time it works the opposite way. 0l surging at idle then killing it self and gets bad gas mileage. A rough idle can be caused by many problems, e. the motor will occasionally surge at crusing speeds between 40 and 60 mph. 2 down to 13. However it is not activated by default. About two cranks before the engine started (not much at all), and then it fired up with high idle. Fuel delivery problems could be: A plugged diesel fuel filter; An in-tank blockage. Thread starter EYY; Start date Mar 9, 2016; Prev. 11/05/2015: Petrol: Ford: Engine misfire (intermittent), Poor idle, Petrol: Proton Impian: Intermittent non-start. I quit tilling and brought to garage. sensor is only a tenner and so is a cheap place to start :-) Symptoms are that idle speed is normal when engine is cold and warming up, but any warmer than that and the idle speed intermittently rises to about 2000 rpm, then falls back to the normal level again. Maybe the car has to be stopped and in drive. If you look inside the throttle body there's a hole in the upper portion and that is what needs to be cleaned out. Idles fine, except for the intermittent upward surge. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc. Many things can cause an idle. Sometimes the fault is in the PCM or the inputs to the PCM. 0 and saw no change any ideas of what could be causing it?. It idles smooth at 600rpm most of the time but when it drops below 500 rpm it will stall or surge to a higher rpm and. probably somewhere from 10-12. i had the harness replaced two days ago having to pay only labor as the dealer goodwilled the part. (44-46v) on cold start up. Hi all, Ive been troubleshooting a engine surge for awhile now that only occurs during winter, usually below 0. Had mine in today for an oil change, surging idle and the intermittent cross wind noise. Flopster843. Typically, it doesn’t die, but the surging may repeat during the entire time the mower is in use. any clue what else I can check? 90 stock long block (with 90K mile) except roller rockers, GT-40. I don't have a live monitor/scangauge/ug. its like there is no changing it bc something is causing the high idle. If I get on the throttle slowly it accelerates fine/normal with no sign of surge or problem. The idle air control valve for Dodge Dakota over time becomes clogged with miscellaneous debris and dirt, which inhibits the proper performance of your idle air control valve. Air cleaner element plugged. I cut the two wires,and connected them together. Napanic Dodge Dakota JOIN HERE 1/13/2009 18:37:04: RE: Idle Surge IP: Logged Message: There is an Idle air intake port located on the very front of the throttle body right near the intake manifold. 9y4sel · Registered. A dealer may encounter a customer concern of an intermittent high idle. Ive had the car in 3 times for this. I did just borrow an OBDII thingy that uses bluetooth to sync to my computer, but haven't done anything with it other than check for faults. 26 HP Kohler Courage on Craftsman DGS 6500, intermittent surging. This started happening after I. It does not do this constantly, and seems to be worse when the engine is warm. 5 engine that cuts out at idle and most any other speed. Goes up to 48v occasionally. Saturn SC1, 175,000 miles. Thread starter EYY; Start date Mar 9, 2016; Prev. In some cases it may only happen under certain conditions, for example only after the mower gets hot, or only when the fuel level gets low. So last fall I installed a Holley Dual Sync distributor to finally control the timing on my 455. A dealer may encounter a customer concern of an intermittent high idle. When the engine is surging at idle unplug the IAC connector. Incorrect idle speed settings or fuel mixture adjustments, and malfunctions in the fuel vapor recovery system can upset engine idle capabilities of carbureted engines. What could cause my AODE (or 4R70W) to lose 3rd gear, and Overdrive? This could be a small or large problem. Many things can cause an idle. Since the ECU is not quite as smart as you are and has a very microscopic view of its world, its behavior may seem very strange to you, but seem perfectly normal to the computer. Intermittent Service Stabilitrak. It sounds like i'm bliping the throttle at stop lights. on May 29, 2016. 5 seems to have a high INTERMITTENT idle, sometimes it will idle at about 800 RPM in park, sometimes 1100-1250 RPM while in park, also when I rev the engine to about 2,000 RPM it takes a long time to come back down to idle speed, and it will sometimes surge to 300-400 RPMs more than idle. we will see what tomorrow brings. I would assume if the exhaust manifold was leaking causing the o2 sensors to read the engine is lean and then more fuel is added, I would have more of a high idle surge as opposed to a low idle surge. The bounce is so bad, it sounds like my car wants to die at the low side of the surge. 4x Orb of Alchemy. If I shutoff and let it sit awhile, it'll start without surging, but after awhile it generally starts to do so, usually at operating temps. any suggestions will be helpful thanks. Searching, I. At times, the idle will surge and other times it will be too low. It only surges under acceleration and somewhat smooths out once the engine is warm. Average failure mileage is 4,600 miles. Intermittent starts runs at Intermittent starts runs at a high idle and after warmed up surges. The surging is terrible at speeds less than 40mph and is less. It may be the idle air control valve. Its the safety to make sure the motor doesnt try to accelerate on accident. The idle air control valve for Dodge Dakota over time becomes clogged with miscellaneous debris and dirt, which inhibits the proper performance of your idle air control valve. This issue showed up after I replaced the spark-plugs to correct a mis-fire. I don't have a live monitor/scangauge/ug. especially after a swap. That would reverse if the alternator is going bad. The truck will sometimes have a rough idle where if feels like a cylinder drops and when it does it can be felt in the whole truck. We're talking about engines that start easily and accelerate smoothly, but then, after a few minutes at a steady speed, either surge in speed or misfire, causing the car to "buck. The BMW 1200RT (as well as most modern vehicles) have 4 wire steppers (2 wires for high & 2 wires for low) so there is no actual stepper pintle position sent back to the fueling computer. If the idle improves, it is worth removing the Throttle body, disassembling and cleaning thoroughly. 2 - Idle Surge Between 500 To 750 Rpm. ok so I have been struggling with rough idle for a LONG time. 9y4sel · Registered. When bike is cool, shut off handle bar switch. It just kept doing it. Here are the steps for calibrating the idle mixture: Progressively turn the idle-mixture screws in. The car will throw misfire codes - do not worry about this. It will cause the idle speed to randomly fluctuate to different speeds rather than stay at one constant speed. This will continue and eventually the CEL will illuminate which will stop the surging but it then seems to drive at the higher RPM and my MPG's go in the dumps. Disconnect fuel injectors, one at a time, until the idle drops below 1000rpm. Engine specs: 5. While idling, my rpm will surge from about 1100 to 1700 over the time frame of a second or two then return to 1100 over that same time frame, then repeat. However, the RPMs are a steady 900rpms on startup and it idles smooth. 11/05/2015: Petrol: Ford: Engine misfire (intermittent), Poor idle, Petrol: Proton Impian: Intermittent non-start. My issue is that it has a intermittent rough idle. I have a 1988 mustang 5. We will start with a possible cause that would not require transmission removal. There was a reflash to address idle surge on LLYs back in late '05 and early '06. Deviation towards a smaller reported injection quantity has been associated with this "slow-down shudder". and they have a lot of useful information on there that can help these. 2008 XC90 3. 106 TU9M Bosch MA 3. At times, the idle will surge and other times it will be too low. My 1999 silverado with the 5. At that range there is no load at all. If I shutoff and let it sit awhile, itll start. Put a pressure gauge on it and you should get a static pressure around 45 PSI and a running (or, regulated) pressure of 33-34 PSI. Barker: td083 Senior Member. 3l intermittent hesitation, surging idle and sluggish acceleration. You might also spray the throttle shaft bearing while you're at it, and see how much they can wiggle. Hi all, Ive been troubleshooting a engine surge for awhile now that only occurs during winter, usually below 0. Not enough prime loss to not start, but perhaps an extra turn or two than normalgoing unnoticed. 00 or so to replace the idle control valve. Over the last month, my 3. Depending on the severity of the problem, you may also experience stalling or backfiring. It fluctuates between 600 and 900 about every 3 seconds, whether I am stopped at a light or sitting with the car in park. And when I say "rough" I mean REAL rough - bucking bronco style (the whole truck shook very hard). One good tip to remember before going through the steps below is to have the Cat pump parts list handy in case spare parts need to be ordered. When I accelerate and hold a steady pedal, I will feel a surge back to correct horsepower. Wife's 2003 Montana intermittently exhibits a high idle (2500rpm) or racing engine while moving. Have a '05 300C that occassionally (intermittently) runs extremely rough at idle. Jump to Latest Follow 1 - 3 of 3 Posts. 0 and saw no change any ideas of what could be causing it?. Low idle or stall. I put in an Edelbrock 1400 and I have not been able to figure out why the has an intermittent surge at idle rpms jump up and go down like a seesaw. Plugged fuel line or fuel filter. From: Stu. Remedy: Replace the crankshaft or camshaft sensor as required. If you look inside the throttle body there's a hole in the upper portion and that is what needs to be cleaned out. The diagnosis begins with these findings: DTC P0305, misfire on cylinder #5; and DTC P0301, misfire on cylinder #1. On fast idle, thats Ok. Previously, I thought I had resolved the issued by cleaning the throttle body, running cleaner through the IAC ports, and adjusting the throttle dashpot. Intermittent stalling can also be caused by a bad idle air bypass motor or a idle speed control motor. If any of you could please copy and past the link to see the video on YouTube and see if it sounds familiar, I would greatly appreciate some help. High idle while driving/stopped and today surge when braking Last week my wife's Ranger was idling high when driving and when in park (checking our mail, idle was up around 2000rpm then it dropped) high idle while driving was intermittent. 0 has an idle problem. Now to many, this will not come as a great surprise. 4 liter engine that was stalling at idle and had a surging condition at lower engine rpms. Fuel filter has been changed. Engine Misfire While Moving. Please Help. Start with a quarter turn on each one and readjust the idle speed to an appropriate RPM. After about 30-60 sec it drops again and it continues like this. The symptoms are the same. You don't want the IAC system compensating while your spraying for leaks. A disconnected vacuum or air hose will inevitably cause a vibration. Fuel pressure is good. Troubleshooting a pressure washer, whether it is the surge power or a clogged nozzle, is something every car wash owner has to become accustomed to in their daily routine. While cruising at a constant speed, the car will also, ever-so-slightly, surge -- the surges aren't neck-jarring by any stretch of the means, but almost feel as if you were driving into a headwind. M*Benz · Registered. If you are in drive with foot on the brake at a stop you can feel it surging. Idling the engine in park then depressing the accelerator duplicates the hesitation. If the throttle is increased the problem go's away, if the engine is allowed to idle the problem go's away. Idle jumps up 50-100 rpm. This system involves a high pressure oil pump and an IPR (Injection Pressure Regulator). I just replaced the NSS, ignition module and crank position sensor, but it hasn't resolved the issue. I have replaced upper and lower intake gaskets, plugs (w/motorcraft platinum)and verified coils are good. new appearing iac motor (ive heard it called iapv) when disconnected the idle still surges correct mass air sensor, cleaned, and proper for a 19lb system (dont know how to test functionally) new 19lb injectors new fuel pressure regulator egr valve appears to be working, but the idle still surges weather its plugged in or not new o2 sensors. The idle also surges into high idle at times than dips to low idle at others. Engage the PTO, everything runs like a dream. Normally, the O2 sensor will quickly swing lean as the additional brake booster air is inhaled into the intake manifold. Soak a rag in Carburetter Cleaner and clean both faces of the Throttle Valve butterfly and venturi duct as far as you can get with the rag. The engine has also cut out on a few occasions and taken a few cranks to start again. It's not a gradual surge either, but immediate, sort of like an in and out spark or something. It will stay at about 1200 rpm when I. It sounds like i'm bliping the throttle at stop lights. 0 has an idle problem. I've changed the Ht. 2002 mercury sable 3. This issue showed up after I replaced the spark-plugs to correct a mis-fire. Leaky valves can be intermittent and can show up more after a good, brisk highway run than around town as higher loads=higher temperatures and that can distort the valve head and/or valve seat and cause compression leakage. This lets a controlled amount of air into the tb that is not metered by the butterfly. I did just borrow an OBDII thingy that uses bluetooth to sync to my computer, but haven't done anything with it other than check for faults. These idle up speeds may occur with no input from the customer. It is generally located above the water inlet. SEVERE SAFETY ISSUE IF YOU ARE TRYING TO PASS ON A TWO LANE HIGHWAY AND YOU LOSE POWER WHILE TRYING TO PASS A LOGGING TRUCK AND SOMEONE FOLLOWS YOU AND YOU GET ONLY HALF WAY. intermittent idle surge with warm engine Sign in to follow this. When it was sitting there dead, the idle quality went to poop. The idle sounds fine, then gets rough with some sputtering and white smoke, nothing major. This takes place with hot or cold engine. Poor Idle, Idle Surge and Hunt: Cleaning Your Throttle Body and Your Fuel System. I purchased the car a little while ago and the idle issue started a few weeks after that. Most of the time my 1992 5-speed Corolla will idle normally. Above 1500ish RPM it smooths out and runs fine. If she turns the van off and restarts it then it is fine (for a while). Not enough prime loss to not start, but perhaps an extra turn or two than normalgoing unnoticed. Start with a quarter turn on each one and readjust the idle speed to an appropriate RPM. It may be the idle air control valve. Intermittent rough idle (primarily cold but also warm) including dipping (from 650RPM to maybe 450RPM), shaking, sputtering out the pipe 2. I didn't have time to troubleshoot it in az, trailered the car to OH. I am hoping it is not the ETM which seems to be a common failure for these cars. Intermittent idle surge. M*Benz · Registered. All systems check out except the FICM. Howdy - My father in law's '91 Chevy was running poorly, so we put new plugs, wires, cap and rotor on it, and it's running better, but it it still surging at idle. More annoying to me is the dead spot at the very beginning of the throttle. 0 diesel 4x4 dually auto with 70K. 5 volts while the engine is surging. After about 30-60 sec it drops again and it continues like this. Surging, no power, intermittent rough idle. The 2014 Ford Explorer has 3 problems reported for rough idle/virbration when sitting in drive and in park. i have the same issues with my 99 sierra with the 5. Normally, the O2 sensor will quickly swing lean as the additional brake booster air is inhaled into the intake manifold. Idle speed descriptions are included below. Recently started stalling intermittently. Polaris jet-ski has no spark, weak spark or intermittent spark refers to when an electrical discharge occurs at irregular intervals or lacks the ability to ignite the explosive mixture in the watercraft’s internal combustion engine, and subsequently, the motor fails to start up. If the tachometer is rock steady, and the shaking seems worse in gear than out of gear, that’s a pretty good indication of a bad motor mount. SES light came on this week and I will go today to have it read to see what's up there. 4L V6, 4x4, SR5 has run into a complicated-to-diagnose rough running engine. If that doesn't fix it, then it's probably the FPR. The engine’s idle speed is controlled by how much air is allowed to bypass the throttle via the idle bypass circuit in the throttle body. When a car is stopped at a red light or turned on in park, a noticeable vibration may occur that signals damaged or broken transmission mounts. 1500 and 2500 rpm for no reason, while driving or while idling. Hi Dave, Like DD mentioned, check for leaks in the exhaust manifold area and all the hoses and connections between the turbo output and the intake manifold. Hey All, I have a 2002 Z06 with a built 402, 42lb injectors, 242/242 114 XER cam and an RPS Street Twin Lite. Could this have been the cause of the intermittent idle surging? I might re-iterate that the surging is not always present, and starts and stops with no apparent rhyme or reason. This lets a controlled amount of air into the tb that is not metered by the butterfly. This weekend, I was once again working on a guy's car that was suffering from eratic idle once warmed up, and the idle mixture screw on the passenger side. when i cold start my 89' t5 coupe it will run and idle great till it begins to warm up then it will start having a surging idle. The surge goes away with the AC on and it idles steady at 900 Rpm. As the title says, i am having a surging and high idle issue its completely random and there is no pattern to it, but when i start the car is idles around 900-1000 rpm, then if it sits for 3-5 min, it will slowly rise to about 2000-2100 rpm and every now and then it will surge from 1700 to 2100 rpm i took the IAC off of the 5. When it did idle the idle wasn't very stabile. When the engine is surging at idle unplug the IAC connector. Measure voltage across the pins, not between pins and ground! You should see around 0. Now its just low power and I see The right side has no spark. I must admit, the surge is much better than it used to be. The reason is that the intake system is meant to hold up more air when the car is idle than when the vehicle is operational. Jump to Latest Follow 1 - 11 of 11 Posts. It's located to the left side of the throttle body as you look at it. Wife's 2003 Montana intermittently exhibits a high idle (2500rpm) or racing engine while moving. Have a '05 300C that occassionally (intermittently) runs extremely rough at idle. I have been in the hospital a couple of times and have not had time to try it again until today. 26 HP Kohler Courage on Craftsman DGS 6500, intermittent surging I recently bought this tractor used and since getting it home it has surged or lost power (with a gas smell when it loses power) and then surged back to full power. 1988 Chevy Truck Surging Idle.