Passat (B5) :: Stutter On Acceleration
Jul 6, 2012
I'm trying to fix a B5 1.8t Passat, it is usually a pretty quick car but recently it has had an issue where it "stutters" when accelerating. Meaning, if you put your foot down, it doesn't "take off" right away (you can't get the wheels to squeal) (not that I would try to do that normally). I know how the car used to feel, so it's not turbo lag or the ABS kicking in. It seems to behave normally after the initial stutter, it's most noticeable in 1st gear. I replaced the gas and air filters for fun, but no dice. No codes on VCDS shareware.
I can think of a few theories based on searches, but am not sure how to proceed;
- Plugged cat: expensive, not sure how to diagnose positively to avoid throwing money.
- Turbo issue? Wanted to hook up a gauge to see if the turbo is boosting correctly. Need to find a place to plug in.
- Clutch? Unlikely as the RPMs don't jump, and in third it doesn't slip. The acceleration makes it feel like something is slipping though
- ABS misbehaving? Light isn't showing up though.
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I purchased a 2014 3.6 SEL from a non VW dealer. They may have put regular gas in the car, I feel like it runs weird, feel a delayed throttle response and a little stutter before acceleration? or is it just me?
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2005 Prius, 135,000. At 20 MPH on acceleration engine stutters, solution?
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I have noticed a slight stutter in the acceleration when pushing it hard. Seems to be most noticeable 4th gear around 4500-5500 rpm. Is that because I dont have a HPFP? I also notice the fluttery whistle sound that was discussed at length in another thread...doesn't bother me one bit but it seems to coincide the stuttery acceleration. Also, I noticed it upon the very first drive after getting flashed - currently at 2500km.
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I was driving the other day and accelerated in 5th and the car stuttered before finally going- I got the flashing CEL. I figured that the car was misfiring and that a coilpack change was the culprit. All my coilpacks are fine and the sparkplugs look good as well. CEL hasn't come back, but the car just feels like it doesn't want to go right away when if i give it some gas when I'm going about 55-65 MPH.
Other guesses would be there is a fuel cut somewhere and that may be causing it?
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I have a 2009 Tig with the APR flash. I had the flash done in 2010 in Edmonton. I have enjoyed it for the last two years. BUT this summer while on vacation the car developed a slight stutter on acceleration. When i reset the computer to stock the stutter goes away. What is failing or how I can repeat it with the stock setting so that the dealer can fix it and I can turn the APR tune back on.
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About two months ago, my EPC light came on and my check engine light started flashing while I was driving home from work. Never heard of/saw that EPC light before. The car started to stutter and buck really bad when trying to accelerate (on light and hard acceleration). Also, when sitting idle (like at a red light or stop sign) the car would still buck but not as bad as when driving. The only time the car doesn't buck is when I am cruising, like after I just get done pressing on the gas and the car is coasting basically. I call the mechanic the next day and he tells me right off the bat, it sounds like a Crankshaft Position Sensor and to drop it off so he can look at it. So I drop it off, he tells me he believes it is just a bad coil on cylinder 1, so he swapped it out and gave me an oil change (it was due for one). Picked my car up on a Wednesday, it seemed fine. Then on a Saturday same issues and same warning lights came back on. So I had it scanned at Autozone, misfire on cylinder 1 and 3, random cylinder misfire and multiple cylinder misfire, so I call him and tell him, he said just bring it back he'll swap it out. I changed the coils myself since it only takes 10 mins. The car seemed fine for about a month. Then two weeks ago, all of the same issues are back and same warning lights.
Had issues with the EPC light? Also, is any truth that the Crankshaft Position Sensor can be related to this or was the mechanic completely wrong? Read another post by someone else and there was talk of carbon buildup. My friend is mechanic and said that he thinks it might be a fuel related issue or electrical, since the issues keep coming back. Also, it misfires more when the heat is on and seems like the interior lights flicker a little when it's misfiring at idle, it's very subtle, definitely notice it so I don't know if it's electrical, fuel related, carbon build up or what.
-February of 2014, I had a fuel pump replaced by the dealer (it was for a recall)
-Back in January 2015, I had the ignition coils and spark plugs replaced by a friend (who is a mechanic).
-In July I had the lifters replaced (by the same mechanic I called)
-Been up to date with oil changes
-Use plus gas from Citgo
Going to drop it off at the dealership tomorrow.
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Situation 01 Jetta AEG 2.0L codes catalyst below threshold and random misfires.
•found exhaust clogged due up catalyst. It was actually making contact with the rear O2
-replaced cat as an assembly and reset codes with Ross-tech
• start up, idles perfect no hesitation smooth. Road tested it and upon entering freeway ramp at it started stuttering/misfiring
• CEL flashed for cylinder 3 & 4. Inspected wires found #3 lost continuity, installed new wires.
•road tested and same result but only 4 came back. Swap plug with #2 and retested.
• #3 and 4 misfire came back again
- shooting in the dark to identify which way to go with it I tested:
•compression was solid 140
•fuel pressure 35 psi at idle and 45 when snapping the throttle.
-Suspicious spec is 55-72psi
•squeezed the return line to inspect if the Fuel pressure regulator valve possibly leaking excess.
Psi never went higher than 45 at idle and throttle snap to wot
•graphed the tps signal smooth with out drops or glitches up to values of 84 according to toss tech scan tool
•looking at measiring blocks one item that was odd is engine load at idle 99.5%
-swapped parts with known good parts with a good running 2002 Jetta aeg motor.
•MAF -no change
•ignition control module/ coil pack no change
-today ill be checking fuel pressure at the fuel pump and inspect if the fuel filter possibly clogged.
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I have a 2007 LS460L. Bought it new and have loved it dearly for 6 years now. It now has 70k miles and is under an extended warranty purchased at 50k miles. As a first year model it has had a ton of TSBs done on it.
The problem i have had as long as i can remember is a lag or stutter during medium to hard acceleration. It feels a little like the old turbo lag or like a very mild stutter. It has had the transmission adjusted, had the service manager driver it for a week to try and capture on computer etc. But nothing has fixed it. At times it feels like if you watch the tachometer during these moments you can actually see a bounce (I may be imagining).
I have almost given up and just lived with it. We have tried tranny, type of oil, software tweaks etc.
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Had my 09 Tiguan now for 3 months and I'm noticing that during cold weather in the mornings as I try to accelerate or keep a constant speed/rom there is a jerkiness/stutter to the vehicle. It doesn't seem smooth if I go I faster then it's not really felt.
This is felt right around 60km/hr.. Or slower.
Doing some research appears that this could be the fuel injectors - those were just done at the dealer under recall about 7montha ago or so by the PO. The Tiguan has 147k KM on it.
What could be a possible cause for this? I also see that seafoam could clean the carbon build up perhaps?
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I have a 2005 Focus 2.0 ZX5 manual. 131,000 miles. I believe this has been an ongoing intermittent issue until now. Occasionally while driving before at 45-75 mph I would sometimes get a stutter like the throttle closed for a split second. Now, after installing a K&N CAI the dang thing is about undriveable. At idle no load the engine will not rev, step on the gas and all I get is a groan, pop pop groan slooooow climb in revs to @ 2000 rpm then quickly up to the fuel cut off. In gear , 1st or 2nd, trying to roll out off idle I get nothing more groan sloooow climb up to 2000 rpm then accelerates normally.
At speed in any gear when RPMs drop below 2000 rpm it will not accelerate no matter how hard I press on pedal. Up above 2000 rpm mostly normal unless I get out of throttle, then I get a bucking sensation from engine. I can pull away from stop if I give lots of revs and slip the clutch....not so good for clutch life...The MIL is on, P0113 IAT high bypass. Cleaned old MAF no difference. Replaced MAF no difference. Got a too rich code also but cannot remember DTC. I have also checked for air leaks after the MAF and it all seems rather buttoned up.
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I have 2001 F250 7.3L 261k miles.
Over the last few months, I have noticed that my truck is taking longer & longer to start after sitting for a long time (i.e. every morning, after work, etc.) When the problem first started (3-4 months ago) it would crank for 2 seconds & nothing so I would turn it off, let the "wait to start" light go off again (depending on outside temp 10-20 seconds) & then it would crank & usually fire right over like it was new. That seemed to happen only in the morning when it was 70 degrees or colder outside but no problem after work when it was 80+ degrees.
As the weather has gotten colder, it has gotten progressively worse. A couple of weeks ago, it was in the 40s in the morning & it took a solid 8 or 9 minutes of cranking for a few seconds, then trying again before it started. Once it started it did "chuga chug" a couple of times before it smoothed out. Last week when it was 16 degrees in the morning, it wouldn't start at all. I tried for a solid 15 minutes before I gave up.
I will say that as it has gotten worse over the last couple of months, I have noticed that it's cranking w/o firing but I will hear it fire once or twice per crank before it will fire up & run. Once it starts, it runs like a champ. No studders, stalls, slow acceleration, etc. Pulls like it always has. The weirdest part about it is that once it starts & runs for 30-60 seconds, I can shut it off & it'll fire right up every time. If I get it up to full operating temperature, I can go back & start it right up 2 or 3 hours later w/o a problem.
I did notice my oil cooler is leaking pretty badly (that will be fixed this weekend) & my valley has fluid in it but it's hard to tell if it's diesel, oil or a combination of the two because my truck is setup to run on WMO (waste motor oil). I have dual tanks so the OEM tank is diesel & the auxillary tank is WMO. I have 2 mechanical fuel pressure gauges on my fuel bowl, 1 pre & 1 post fuel filter as well as an aftermarket Walbro fuel pump. The fuel pressure when running on WMO has always bounced a little bit between (65-75 psi) but the fuel pressure on diesel has always held solid at 75 psi until recently when I have noticed that it flutters a very small amount between 73-75 psi.
I have verified that the GP Relay works & was leaning towards a glow plug problem but considering it was having troubles at 70 degrees ambient temperature, I'm hesitant to think that's the true problem. I think that might just be adding to the problem. I live in the south so my truck doesn't have a block heater but I'm going to add one this weekend when I replace the oil cooler gaskets & o-rings.
I'm also going to pick up a new Android tablet today (replace my broken one) so I can use the Torque Pro app to monitor ICP, HPOP & InjPW. Finally, I had a DP Tuner chip on it & to remove that as the possible cause, I removed it & the same symptoms continued.
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06 250 5.4 40k on it, usually when cold and accelerating engine will misfire and stutter and then continue accelerating. The wrench light will flash sometimes but it wont store a code. This used to be vague in occurrence but has now started to be more a common occurrence even when up to normal operating temps.It seems only to misfire /stutter on hard acceleration or towing/hauling heavy loads. The only answer I got from a mech would be to do a computer reflash, not sure why /how this would fix whats going on.
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I have a 00 Passat GLS.
When i accelerate, whether it's hot/cold/wet/dry outside, the car almost stalls. I have not had it stall yet, usually out of pure fear, i drop the pedal to the floor, and i catches up. I have had this happen at very inopportune times, like joining traffic. The car does a sort of stutter step.
I know little about new cars, but i feel like the fuel or air aren't making it through nicely.
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B5.5 2001. When I am giving her gas you feel her stutter. But its not like a misfire stutter. Its more like a lose of power. Its almost like shes switching from boast to naturally aspirated. These stutters can also last a few seconds at a time. Where to start looking?
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When my car was brand new, in 2004, I had to take it in for its Tiptronic software to be updated. Apparently there was a Tech Service Bulletin on the 2004 V6 Passats where this faulty software caused the car to hesitate and stutter between 1st and 2nd. At the time, the problem was fixed right away at my dealership.
Now my car has 40,000 miles, and has been flawless. I took it in for the 40,000 mile service, and my car came back from being serviced with several problems mostly minor--the AM radio is suddenly static-y, the tires were all underinflated by 18 psi's. But a more serious problem is that the hesitation and stutter that I detected when the car was new 2 years ago is back! I can't believe I brought a perfectly working car in for 40,000 mile checkup, and now have these issues.
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I have an 07 6speed MT w/ 82K on the clock. Today it was snowing on the ride home and I noticed a few occasions where the car felt like it was bucking for just a split second. No warning lights came on at any time. The RPMs and speed never changed when it bucked. I was driving between 35 - 55 MPH when it was occurring in 3rd, 4th or 5th gear. No correlation to accelerating, decelerating, or coasting on highway that I could figure out.
Given that the snow was covering even the treated road surfaces, I suspected it might be connected to the ESP, so I turned it off for a while. Still happened.
I didn't notice any abnormal engine noises and it was fine on my ride to work in dry conditions earlier in the day.
I haven't had any work done on it recently and I am getting the 80K service done next week. It has no engine mods done at all. All stock.
Could it have been the tires slipping on wet spots? But happening so quickly the traction light never came on? Or should I look for other issues in the engine?
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Our 2001 Passat wagon 4cyl turbo automatic has a random idle stutter. When sitting at a stop light the RPM's quickly drop and then regain idle. It happens at random times and only when idling after the engine has warmed up. It doesn't seem to matter if its in drive or park. What sensor could be failing or a possible cause? Over the past year the problem has increased from almost never to a few times at every stop light. My OBDII reader shows no codes. Car has 105K miles and I cleaned the throttle body.
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2001 V6 Passat with 125k miles throwing a P0430 code.
Having trouble on cold starts, takes about 10 minutes to finally get it to turn over. When it does the idle is extremely rough. For the first 1/4 mile the car bucks, stutters, and misfires. After that it runs fine and starts fine when already warm. I am noticing slightly decreased gas mileage but nothing major.
Valve cover gaskets were replaced 2 months ago, but were leaking oil for at least a year before I could afford to have them replaced. I am still noticing some oil leakage, however not as much as before. I have had both O2 sensors replaced twice in the past 5 years. Timing belt was replaced at 98k. What might be causing the starting issues?
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I had the transmission filter and fluid changed at the local VW dealership had some issues with that but they straightened that out and its been fine for a while well then about 2 or 3 weeks ago i was trying to mess with an audi and hit the gas (has the 6 speed auto tranny) and the car kinda stuttered and the check engine light flashed probably 4 or 5 times then went off, it did that a few times after that then my wife was driving it and it did that stutter again and the light stayed on, the code said misfire on cylinder 2..
So I replaced the plugs today and it did fine at first but when i got to about 55-60 and went to speed up and it started to miss pretty bad then steadied out and sped up. no check engine light or anything but it was missing.
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2009 Passat 2.0 TSI. Purchased new in Nov. 2009. The car is 2 years and 3 months old. It has 28xxx miles. Maintenance regularly performed. (Mobil 1 0W-40 every 4-5 thousand miles...)
I was driving the car yesterday afternoon when about 2 minutes after leaving home the car's check engine light turns on along with the EPC light after a minute. the car started to stutter with light smoke. I drove home immediately to call the dealership. I scanned the car and it had two cylinder related fault codes. I believe 'Cylinder 2...' and 'Cylinder disabled?' Unfortunately I did not write down the codes as I was in a fury.
The dealership tells me to bring the car in as soon as possible 10 minutes later, I turn the car on and relatively heavy white smoke continues with excessive stuttering especially while in park. Additionally, the muffler sounded as if it was sputtering out the white smoke (1920s train in color and noise). I drove the car slowly to the dealership and noticed difficulty accelerating to 15 miles per hour. I did not try to go above that.
I just had the intake manifold replaced 4-5 weeks ago since I had a check engine light related to that.
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