Boat engines have the same operating principles as do land vehicle engines, but having trouble with your boat engine can leave you and your family in a precarious predicament. Sluggish acceleration; There's a little bit hesitation when switching from park mode. another thing is, that they may have cracked the hose between the manifold, and the throttle body. I did do a flush (seafoam) of the tranny and a new filter. The car still pulls hard and there does not seem to be any loss of power. During idle and cruise STFT stayed at zero, but during moderate or heavy acceleration ( which is mushy at first, then solidifies after a second or two) I see STFT go around 9% - 14% then return to zero at cruise or light acceleration. Not only do they have the task of running and managing the vehicles main source of propulsion, they also have to be able to identify problems that may be. ? My friends and I took a long trip in my friends car a week ago, 800 miles roundtrip. These bikes have slightly different carb jetting, but they are all rather lean on the idle circuit. Curing Rough Idle. Discuss 1990 TBI 5. Speed Reading Acceleration Secrets This is interesting, as i recall the hulk destroying an asteroid twice the size of earth,. Had that replaced and was back in business. Got my truck back yesterday and Im still seeing the crappy gas mileage, rough idle and acceleration that seems to be more sluggish than normal. You can have very bad COP Ignition Coils without a Mil. Fuel filter took some of the sluggishness out of starting and made acceleration past first gear much smoother With car in park: under 1k RPM - slight clicking noise from engine, then revs back up, very rough idle because of such 1k to 2k RPM - smoother, but hesitates to accelerate further above 2k RPM - perfectly smooth. It used to stall after rain and have just replaced the ignition coil, which has solved that problem. Hesitation and slight rough idle? I have an 06 WRX wagon, the car has 75K miles on it and is all bone stock. Many thanks everyone. There's also major hesitation when accelerating. Rough Idle, Poor Acceleration, Misfire P1349 2000-2004 Toyota Avalon Diagnosing poor idle/sluggish acceleration concern. In addition to the ignition quirks, he addressed another common problem with these bikes: the “off-idle” flat spot on ’75-’77 models. Crank the engine while observing the spark tester J 26792; a crisp blue spark should be observed. Just changed the EGR. It used to stall after rain and have just replaced the ignition coil, which has solved that problem. rough @ idle and acceleration after Throttle body cleaning! Discussion in ' Gen 2 Prius Care, Maintenance and Troubleshooting ' started by bshef , Sep 3, 2013. 0T CC has been experiencing increased rough idle (used to be only occasionally) and a sputtering feel while accelerating or holding steady at rpms up to about 4k. For the past few months our check engine light will come on periodically. If he tries to drive it, it will run fine and then the erratic idle starts. First, idling is a problem. Rough Idle When Starting Cold, Then Goes Away When Engine Is At Operating Temperature More Details Below I have an older, low mileage vehicle with a V8 engine. My check engine light just came on when I'm in drive but stopped, my truck will have a very rough and shaky idle (like it wants to die or something). When it is running fine, it idles great, right around 650rpm. It sounds like things are fine in open loop, and when the car gets into closed loop you are having issues. Average repair cost is $320 at 108,500 miles. thought it was fuel or water in fuel so put heat in tank, no change checked plugs wires, made sure everything was plugged in, no cracks, leaks etc. Re: 2002 Taurus flashing check engine light, rough idle, & poor acceleration Post by gginnj » Mon Apr 03, 2017 7:09 pm This happened to me last January, not sure if the codes were the same, but the problem was the gas - it was the first time I filled up with the higher ethenol winter gas. Once the timing has been adjusted, restart the engine, pull down the throttle rod until engine RPM is twice idle RPM, and return to step 3. did a search, but found little info so my 97 ex ohv is starting up cold and running at idle well till warm, then rough idles between say 600 and 1000 cycling every second or so, then on acceleration, it runs very rough till about 1700 rpm and then loses power after 55 mph but only under load (climbing a hill). Everything went well but I'm having a very rough idle and a very sluggish acceleration. Sudden Onset: Rough Idle, Jerking and Sputtering Under Acceleration, white/blue smoke Hey Everybody, Here's the deal, I drove my car to work the other day and all was well. , drops down to about 650-750. Any thoughts on what it could be? It has been this way for about a week and it's driving me crazy. I also noticed when I came to a stop one time there was a very bad exhaust smell. M103 hard start, rough idle, hesitation SOLVED I didn't actually post any questions for my particular problem. ) Jiggle the connectors to the slide valve and the controller box. If I put it in neutral the idle smooths out a bit but once it goes back into drive it is rough again. reconnected all wire and car still has low, rough idle, extrem. Feels like the engine is bogged down. I don’t know if I’m being overly sensitive, but it just doesn’t feel. Rough idle after shifting into gear ,also I have no passing gear power. Would run and start ok when warmed up. I'm new to vehicle maintenance and I don't know where to start. Turns out it was a vacuum leak at the intake manifold plenum. However, the idle rpm in about 900-1100. my question is will a combination of a toque converter out of a v6 700r4 stall be too low (1000-1100) a oem alternator from 3. Please help. RPM fluctuate from 615 to 300 and back within 2 second. 8T Jetta (Full Metal Foil) 06-02-2009 10:04 PM #8 i'm troubleshooting a different problem - mine is idling perfectly fine just starts cutting out when i really get on it. Sluggish acceleration; There's a little bit hesitation when switching from park mode. Plenum is attatched to manifold and mounts up to the crossover housing. ? My friends and I took a long trip in my friends car a week ago, 800 miles roundtrip. Rough/Slow Acceleration. There is no smoke at idle or as engine reaches cruising speed. Its started to do it in reverse when stopped also. Rough idle and Slow Accel. 0T CC has been experiencing increased rough idle (used to be only occasionally) and a sputtering feel while accelerating or holding steady at rpms up to about 4k. She recently has experienced a pretty big problem. pulled my chip out which made no difference. I replaced all vacuum lines and connectors no change. Print Email Slow down and, in a safe location, pull to the side of the road. Set idle speed to desired RPM. Rough idle, intermittent stalling, poor acceleration? I have a '02 Mazda Protege Es that has recently accumulated multiple problems in the past few weeks and through many google searches haven't found any solutions. Under accelearation first gear is fine, but second and third are choppy and it almost sounds like the car is choking on something?. 7 Idle surging,stalling in the alt. Escape & Escape Hybrid - Rough idle and no acceleration - A friend of mine has asked me to help fix his 2001 Mazda Tribute with 150K miles. My problem is it has a rough idle and it is hard to start. It doesn't cover any code modifications or hardware modifications, with the one exception of code modification to allow Desired AFR dataloging in the place of Battery Voltage. I went out to lunch last week and no problem then left the parking lot and the car hesitated a little, check engine light blinked then went solid and from there on the engine vibrated really bad on low RPM and acceleration and has a rough idle. Jamie LaPage arrived at Jon's shop with a rough idle and poor performance for a 390 High Performance V-8. (that's what it sounds like at least). 2005 Chrysler Sebring - Rough Idle / Slow Acceleration - Answered by a verified Chrysler Mechanic We use cookies to give you the best possible experience on our website. 8 v6 mustang (auto): P306, rough idle, power loss, still can't find problem! About a month ago I bought an '01 Mustang with 78k on it. Idle is rough like it's missing. I recently puchased a 2007 9-5 2. 2003 f250 6. After that happened I changed the fuel filter, but it still does it, and not CEL has some one. Under accelearation first gear is fine, but second and third are choppy and it almost sounds like the car is choking on something?. However, just 2 days ago (only one day after putting in that O2 sensor), the no acceleration I explained above started to happen. After than, driving seems normal, except for sluggish acceleration as noted below. Adjust each carb to best idle + 1/8 to 1/4 turn, ideally, adjust out on the water a blade width at a time each, just until any throttle hesitation is gone. driving down the road it does fine, never sputters or struggles, but once i stop at a light it starts the rough idle. another thing is, that they may have cracked the hose between the manifold, and the throttle body. I had my dad help me put it back on and the next day i started having random misfires in cylinder 4, the wire that i was working on. Finally I hear 'CLUNK' and then all of a sudden its not just a rough idle, the engine is shaking VIOLENTLY. It used to stall after rain and have just replaced the ignition coil, which has solved that problem. Off idle feels smooth but very little acceleration power. 8T Jetta (Full Metal Foil) 06-02-2009 10:04 PM #8 i'm troubleshooting a different problem - mine is idling perfectly fine just starts cutting out when i really get on it. First, idling is a problem. Hello to all at the Buick forum! The problems: poor fuel economy. About a year ago my idle was really rough and my check engine light came on. Exterior Features; Bodyside/Cab Step or Running Board: Option; Bumper Step Up: Standard; Front Air Dam: N/A; Metallic Paint: Standard; Power Sliding Side Van Door: N/A; Power Trun. Unfortunately, these variables are all inter-related. Carburetors are not much of a topic for a discussion in the SMALL BOAT ELECTRICAL area. Good day all. Can be many things such as a MAF sensor problem or a coolant temperature sensor providing faulty data. 2l 5S-FE Misfire Running Rough And Loss Of. Since I am breaking in the engine I took it easy but overall strong acceleration up to about 6300 rpm, didnt want to push it yet. I have a 2005 H2 SUT with 200,000 miles and over the past couple of months, I have noticed that there is slight hesitation on acceleration and the idle is very rough once the engine is hot or has been running for more than 30 mins. ) 9 Fast idle/runs on The engine speed. Re: Mercury 90 HP 2-Stroke Rough Idle and accelaration Idle mixture on 2-strokes have to be a bit fatter than 4-strokes to allow just enough 'richness' for acceleration. Now, vehicle is really sluggish, won't accelerate much past 3500rpm, and bucks badly at constant speed - 35mph/3rd - bucking stops if I step on accelerator. As well the car shakes when it is idling. I'd also throw a bottle of "fuel-injection cleaner" into the gas tank, as well (An additive with "Techron" in it seemed to work good for me). 3t with 40k miles. I've changed out the fuel pump, catalytic converter, O2 sensors, TPS, swapped out he MAF with another, spark plugs wires and coil and can't seem to find a solution at all. Mildly rough idle and extremely rough acceleration. let it sit for about 2hrs and then i went to drive it and it seemed like 80% of the power was back for about 1 mile and then it was sluggish again. In addition to this I have rough idle problem when accelerate or stop at signal light. I didn't get any warning lights or codes on my dashboard. ) Jiggle the connectors to the slide valve and the controller box. Recently did an oil change (no issues) and did plugs not that long ago. Leaving work today after car had been sitting for 7 hours, I started it and pulled up to the light, about a couple hundred feet away from my parking space. For about a year and a half I have an issue with jerky acceleration at lower speeds. Page 1 of 3 1 2 3 Next >. Hesitation and slight rough idle? I have an 06 WRX wagon, the car has 75K miles on it and is all bone stock. 8 last night on the freeway and it started shaking and lost power signifigantly. It's accelerating slow. Re: Rough Idle, hesitation on acceleration, loss of power I have a 05 Ranger Edge with the 4. It does not matter whether is cold or warm start. Running lean can cause a rough idle, poor mpg's, and loss of power. Upon acceleration from a stop, there is a slight hesitation but once it's over that it runs flawlessly until it needs to idle at a stop again. 93V8S10 0. Rough start, sluggish acceleration & moments of lost power. So it's not a sustained idle, it's more of a swell and then it backs off - but noticeable enough to me as I can feel it in the steering wheel (and post here). I planned to replace the plugs and check the MAF on Saturday. I have a 2005 H2 SUT with 200,000 miles and over the past couple of months, I have noticed that there is slight hesitation on acceleration and the idle is very rough once the engine is hot or has been running for more than 30 mins. Vacuum leak, idle valve, open EGR, etc, are all things that will affect idle but be insignificant (problem goes away and engine smooths out) when the engine is revved or operating at normal driving speeds and during acceleration. Idle is rough like it's missing. My 98 OBW is having similar issues. Since I am breaking in the engine I took it easy but overall strong acceleration up to about 6300 rpm, didnt want to push it yet. In addition to this I have rough idle problem when accelerate or stop at signal light. Share Tweet. When I'm at a traffic light, the car feels like it is going turn off so I put it in neutral and from there proceed to "REV UP" the engine to prevent it from turning off. also started idling rough. I've changed out the fuel pump, catalytic converter, O2 sensors, TPS, swapped out he MAF with another, spark plugs wires and coil and can't seem to find a solution at all. The next day I added a bottle of Lucas fuel treatment to a fresh tank of gas. 0T CC has been experiencing increased rough idle (used to be only occasionally) and a sputtering feel while accelerating or holding steady at rpms up to about 4k. I am going to post a link to my previous post that has those codes and also anothe problem that never was solved. Rough Idle When Starting Cold, Then Goes Away When Engine Is At Operating Temperature More Details Below I have an older, low mileage vehicle with a V8 engine. When cranking it up, it takes a long time, it will turn over but never actually starts up for normally at least a minute. The oil is a little bit dark but not thick or creamy colored. The only thing I did not check is the exhaust system so that will be one of the items to. It also has a VERY slow acceleration and then it will just jump and go. Since I am breaking in the engine I took it easy but overall strong acceleration up to about 6300 rpm, didnt want to push it yet. Sometimes, the car jerks from full stop to when I hit the gas pedal, especially during the morning. If he tries to drive it, it will run fine and then the erratic idle starts. I replaced all vacuum lines and connectors no change. Rough Idle and Bucking Under Acceleration I picked up a 2002 WRX with 180k on the 27th of August. Possible cylinder head or valve damage on the GM 2. Will do this regardless if the ac. replaced fuel filter 3. I am certainly not all knowing and base my questions less on model designation and more on engine size/xmission numbers. It recently started idling rough and feeling a litle sluggish on accelerating so I have tried a couple of things like fuel injector cleaner, new Nissan spark plugs, cleaning the TB and MAF sensor and doing the throttle pedal and idle air relearn procedures. But when I stop the car and let it idle, the engine has been dying (it starts right back up no problem, though, and doesn't die while moving). Damage to the car's carburetor and vacuum hoses can cause the engine to misfire, resulting in a rough idle. It was the over-reading at idle that got me thinking as I had not seen this fault before with a MAF meter, only under reading and poor response (often generating P0171 "system too lean"). BMW 328i Rough idle, poor mpg, low on power. 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. Now its doing it when Im going very slow (like just letting my foot on the brake). thought it was fuel or water in fuel so put heat in tank, no change checked plugs wires, made sure everything was plugged in, no cracks, leaks etc. A rough idling car is more of an inconvenience at first but if the problem is not solved it can quickly lead to bigger problems such as slow acceleration, stalling and eventually a vehicle that will not start at all. When I say sluggish, I need to step on the gas pedal more to accelerate. Rough Idle Diagnosis. Rough idle, bad hesitation on acceleration, perfect idle with TPS disconnected. Hesitation and slight rough idle? I have an 06 WRX wagon, the car has 75K miles on it and is all bone stock. Misfire/Rough Idle. Defective/clogged fuel pump The fuel pump pulls fuel from the gas tank to the fuel injectors. Idling a little rough. Also, sometimes when accelerating, the car stutters. The oil is a little bit dark but not thick or creamy colored. The problem: Affected vehicles may exhibit a rough engine idle and hesitation/stumble on acceleration. Not transmission cause rpms don't go high and it just not move. The other night it was having problems starting then I drove it home and pretty much lost all acceleration and had to go 35mph with spurts of it "returning to normal". Finally I hear 'CLUNK' and then all of a sudden its not just a rough idle, the engine is shaking VIOLENTLY. Off idle and during acceleration it runs fine. I think I made a mistake. I am going to post a link to my previous post that has those codes and also anothe problem that never was solved. More then likely, you have a few things wrong. last i checked it was po171 and 174 but at different times. When you hit the gas, you get the initial "surge" of acceleration, but if you keep on the gas, the engine sort of "sputters" and you lose power. Hello, I'm new to Cummins and I recently bought a 2000 Dodge Cummins, 4x4, Auto Trans, used in Alberta. OK 100miles down and still a rough idle. it also seems the longer i sit the worst it gets. BMW E30 3 Series Idle Speed Troubleshooting. Replaced: coolant temp sensor, tps, map sensor, fuel filter, and o2 sensor. I have been searching this site trying to find answers for the problems my car seems to be experiencing. And doesn't seem to do it in park as bad. Stutter on Acceleration, slow rough start I'm sorry to start yet another Hard Start and Loss of Power thread, but I can't find one that meets my exact problems. The next day I added a bottle of Lucas fuel treatment to a fresh tank of gas. My wifes MR2 Mk3 (with 1ZZ-FED) has picked up a problem - has a rough idle which will drop away to stall if allowed, and doesn't give any power when pulling away unless the revs are held above 2000! These issues are only aparent when its started, warm or cold (but mainly when cold) and last for about 30 seconds to a minute then seem to be ok. Hesitation and slight rough idle? I have an 06 WRX wagon, the car has 75K miles on it and is all bone stock. 0T CC has been experiencing increased rough idle (used to be only occasionally) and a sputtering feel while accelerating or holding steady at rpms up to about 4k. I just acquired a 1985 Mercedes 300TD It's been sitting around a while, neglected. Also, sometimes when accelerating, the car stutters. However, just 2 days ago (only one day after putting in that O2 sensor), the no acceleration I explained above started to happen. no problems. 1998 Toyota Camry 2. Replied by ToyotaKarl on topic Engine smooth at idle rough at acceleration. Over the past 6 months I've been getting a rough idle where it seems it may die at a stop and stutters on acceleration - this was transient and seemed somewhat linked to fuel in the tank - it seemed to operate normally with a full tank of gas and gets bad when closer to empty. And doesn't seem to do it in park as bad. I noticed the air intake hose (the ribbed hose that's about 3 inches in diameter) is missing and am having a tough time finding the part that mounts onto the chassis between the headlight and the grille (it's simply not there on the car for the intake hose to connect to). The sluggish part upon acceleration may be a different issue. Now I notice that it is sluggish on acceleration. 2003 f250 6. While some cases are less severe than others, a rough idle is usually identifiable by a shaking and bouncing sensation in the vehicle. Under accelearation first gear is fine, but second and third are choppy and it almost sounds like the car is choking on something?. Random rough idle, bogged acceleration, no power Hello, my 330ci started to randomly idle VERY rough, going from 500-1000 and when i try to accelerate, it is bogged and very slow, and is very jumpy as it is trying to move but can't. ODBII codes are: P0102 Mass or Volume Air Flow Circuit Low Input, and P0302 Cylinder 2 Misfire Detected. The car idles rough like before, and will. The oil is a little bit dark but not thick or creamy colored. Before making any assumptions or checks a recent tune-up including air filter, pcv valve, pcv filter, fuel filter, spark plugs and wires, distributor cap, etc. Also, every so often when I accelerate I hear what seems to be liquid slushing around somewhere. Thank you!. It seems to run fine and no warning lights come on but the engines idle seems rough and inconsistent. I would check the fuel pressure. 5-02 Cold Idle Engine Warming (Enable PCM Idle Speed Increase) 18-019-02a 98. If this is your first visit, be sure to check out the FAQ by clicking the link above. Feels like the engine is bogged down. Archived Scooter Repair Questions Issues with Running Slow, Bogging Down or Running Rough. Porsche Cayenne S Rough Idle Stumble can be caused by a number of things, today we talk about ignition misfire diagnosis. I have a friend who has a 2006 Mazda Tribute 4 cylinder. Have to admit if I just jab the right pedal down hard it will pick up a move but I should not have to do this all the time. ) 8 Engine runs rough/rolling idle The engine speed fluctuates between the specified idle speed and lower speed and the engine shakes excessively. Car has a rough idle. The oil is a little bit dark but not thick or creamy colored. I have been having issues with my Ford Focus 2009 1. The only things I have tried so far to fix the problem is change air filter, spark plugs and clean throttle body but none of these things have solved problem. P0172, rough idle, and sputtering acceleration I've spent the last 3. I have yet to get a code reader on it this go-around but it has been throwing O2S codes constantly. I'm trying to figure out an issue with my 2012 1500, 45,000 mile Hemi. After that happened I changed the fuel filter, but it still does it, and not CEL has some one. I would check the fuel pressure. I have changed all the old vacuum hoses, connections, and inter hose units. I've changed out the fuel pump, catalytic converter, O2 sensors, TPS, swapped out he MAF with another, spark plugs wires and coil and can't seem to find a solution at all. Rough idling and slow acceleration. We have a 2006 Dodge Charger. source: 1995 ford f150 acceleration issues i think they may have damaged the plug wire boots, take a look at them and see if the rubber boots are torn or damaged, cheap tune-up shops are famous for causing this kind of damage, there is a special tool to remove the wires which get stuck to the plugs, many young kids do the work but don't even know the tool exists. This is ONLY a problem at idle except for slow acceleration when the check engine blinks. My car is mostly stock but I put 24lbs injectors cause I have to replaced the old one and I thaugh thats gonna be a good idea to upgrade to a bit higher. I'm wondering if there's a problem somewhere like bad intake sensors or something. Finally I hear 'CLUNK' and then all of a sudden its not just a rough idle, the engine is shaking VIOLENTLY. Its started to do it in reverse when stopped also. The idle is very rough after coming to a stop. But basically I've been experiencing extreme rough idling and acceleration, I scanned the codes and it was a P035 bad ignition coil e (#5) so I replaced the coil and cleared the codes but the problem continued and the code came back for the same coil and now I'm getting a Po33 as well ,bad ignition coil c (#3) I've checked several different. Those of you experiencing the rough idle should have this looked at!. Upon turn and acceleration, car spits, sputters, jerks, jolts and would not accel properly. It's a little rough and if I don't have my foot hard on the brake she tries to lurch forward. Rough/Slow Acceleration. Totally new forum member, new to forums in general. Very rough idle at stop lights NEVER stalls and rpm stays 750-900 at idle, vibration goes away at normal speeds. Besides the rough idle the truck has lost major power and when I do step on it, the intake noise is loud, like its not getting enough air. If your car, truck, or SUV doesn’t run up to snuff, you can pull off to the side of the road and call for towing assistance. This xdf covers all of the original applications of the code. When it does the car will start having a really rough idle when stopped. Different owners seem to describe this problem using a variety of expressions. Sudden Onset: Rough Idle, Jerking and Sputtering Under Acceleration, white/blue smoke Hey Everybody, Here's the deal, I drove my car to work the other day and all was well. 2005 Chrysler Sebring - Rough Idle / Slow Acceleration - Answered by a verified Chrysler Mechanic We use cookies to give you the best possible experience on our website. The idle is off, sluggish on acceleration. A Basic Idle Tuning Strategy. Hey yal I just bought a 2014 buick enclave. Page 1 of 3 1 2 3 Next >. Btw, it is a 04 stickshift. i dont have any lights on. Idle Set Screw - This screw sets how fast your engine idles. I turn the car off. ODBII codes are: P0102 Mass or Volume Air Flow Circuit Low Input, and P0302 Cylinder 2 Misfire Detected. Once it reaches about 25-30, it runs okay, but you can still tell that it isn't running smoothly. It will almost die, then resume normal speed. Feels like the engine is bogged down. Idle is rough like it's missing. I was aiming for an idle of about 800, at 800 it pulls about 15 inHg, but the needle flickers a little between 14 and 15. When in neutral if I give it gas it will not go high on the rpm gauge and it - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. My CLK 320 has developed a rough idle. it also seems the longer i sit the worst it gets. Normally, you'd also have other problems like a fairly significant rough idle too. For the past few months our check engine light will come on periodically. When at idle, it is a rough idle. This is ONLY a problem at idle except for slow acceleration when the check engine blinks. Usually slow acceleration means the engine has low compression. I've been reading through the factory service manual, and theres more information in there on how to diagnose a squeaking serpentine belt than an issue like this. Discussion in ' General Tahoe/Yukon Discussion Forum ' started by pcummings32 , Sep 11, 2012. Took it to Ford and they can't find anything wrong when they have it so it seems. Its started to do it in reverse when stopped also. I have had it save everything from outboards that won't stay running or run rough, to 2 stroke weed whackers doing the same, to cars with very rough idle and poor performance. My 99 STS recently starting having a rough idle and sluggish acceleration. Third, be sure that the engine is the source of your car's sluggish nature. Engine load seems to be over 60% during these injection spurts. It got worse until I finally took it to the dealer. Sometimes they get gummed up with carbon deposits. Jamie LaPage arrived at Jon's shop with a rough idle and poor performance for a 390 High Performance V-8. 146,000 miles. 1992 lexus ls400 has low, rough idle, extremely slow acceleration. Idle hunting is usually a clear sign of a vacuum leak or slow responding idle control valve. Vacuum leak, idle valve, open EGR, etc, are all things that will affect idle but be insignificant (problem goes away and engine smooths out) when the engine is revved or operating at normal driving speeds and during acceleration. I don't think it has ever been serviced, except oil changes. Your best bet, if the check engine light is on, is to go to Autozone or scan your truck yourself. The second is that acceleration appears to be poor, at least poorer than normal. Got my truck back yesterday and Im still seeing the crappy gas mileage, rough idle and acceleration that seems to be more sluggish than normal. These engines are experiencing a problem with carbon build-up on the top side of the intake valves. car is giving cel code engine - 25, 26, trac code - 11, 51. I've changed out the fuel pump, catalytic converter, O2 sensors, TPS, swapped out he MAF with another, spark plugs wires and coil and can't seem to find a solution at all. Over the past 6 months I've been getting a rough idle where it seems it may die at a stop and stutters on acceleration - this was transient and seemed somewhat linked to fuel in the tank - it seemed to operate normally with a full tank of gas and gets bad when closer to empty. I constantly have to keep giving it gas. I just noticed in the morning that the car would idle at 1100 RPM and start to rev a little bit before finally dropping down to. Also can not get over 30MPH or so unless I accelerate extremely slow. This would take out all the guessing. The hotter the car gets, the more sluggish it gets. The car would start up just fine while cold but just recently it starts up and dies immediately (unless I rev the engine a tad) -- after that, it seems to idle fine (but rough). rough idle/stumble on acceleration(low RPM's) Ok, when I purchased the bike it ran smooth. Very rough idle with a repetitive cycle that is smooth for a couple of seconds then misses badly, occasionally stalling. Btw, it is a 04 stickshift. Sometimes they get gummed up with carbon deposits. The next day I added a bottle of Lucas fuel treatment to a fresh tank of gas. I have idle A/F set at 14. when its cold out and i first start it in the morning it has a little bit of a rough idle, then the rpm's "jump" and. To summarize, the solutions for a lazy / slow return to idle (or erratically high idle) are: Eliminate vacuum leaks; Perfect ignition. After the engine warms up idle speed will increase and the engine may smooth out (although acceleration may have some hesitation until the engine gets real hot. it also seems the longer i sit the worst it gets. If you set it there and hear no pinging on acceleration and get good power (ha-ha), you are good. ? My friends and I took a long trip in my friends car a week ago, 800 miles roundtrip. If he tries to drive it, it will run fine and then the erratic idle starts. When in neutral if I give it gas it will not go high on the rpm gauge and it - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. Engine Runs Rough, Stalls, Hesitates on Acceleration, Hard Starting, Poor Performance Problem Description If the engine runs rough, stalls, hesitates on acceleration, is hard to start, or has generally poor performance, this can be caused by a cracked or broken air inlet tube. But when I rev to about 2500-3000 it starts to get sluggish and runs very rough but coming down to an idle its runs very. But we were not! The result was that the Volume Control Screw was turned out way too far, and the idle was about 1200 rpm with the Bypass Screw turned in all the way! This caused a serious stumble on acceleration. drive it, while you look at data. Surge and hesitation at slow acceleration Our 2017 Explorer 3. However, just 2 days ago (only one day after putting in that O2 sensor), the no acceleration I explained above started to happen. It has a rough idle, check engine light, occasionally the check engine light will blink (while blinking it seems as though there is no kick down acceleration and if I put my foot down on the pedal it accelerates slowly). The idle jet controls the idle and on up to quarter throttle, give or take a bit. It seems to run fine and no warning lights come on but the engines idle seems rough and inconsistent. I can drive about 25 miles to Lubbock, but I need to stop after half a mile, park it, then I can continue on the rest of the way just fine. 7 Slow return to idle The engine takes more time than normal to return to idle speed. Rubber was rotted at bottom causing a vacuum leak (, rough idle). When at idle, it is a rough idle. Average repair cost is $320 at 108,500 miles. It does it from a dead stop, and while driving at slow speeds. So now off to aircare and Murphy's Law kicks in. 0L which idles high and the response on acceleration is rough and seem to be missing power. Ask Question hiccups, stalling, bad acceleration. became very sluggish to the point that i could barley take off. The car idles rough like before, and will. 5L Rough Idle and Sluggish Power:. I also read about the TSB 18-017-08 rev. Possible cylinder head or valve damage on the GM 2. Around the same time I started experiencing some problems with a rough idle. I agree - I highly doubt your acceleration problem is from a gummed up throttle body. Rough Idle/Sputtering Acceleration 06-23-2011 11:20 AM #1 Of late, my '09 2. Hello to all at the Buick forum! The problems: poor fuel economy. You may have to register before you can post: click the register link above to proceed. 2 Hesitation & Stumble. the return trip I'm almost back to Marietta, Ga. Cams are welded, new coil packs, plugs, fuel pump, cam and crank position sensor. Cranks back up and keeps going after shut off. Mildly rough idle and extremely rough acceleration. A Basic Idle Tuning Strategy. But I have no power and feels like no passing gear.