Passat (B5) :: Car Shudders Slightly And Goes Back To Idle
Oct 21, 2005
When I'm driving and i let off the gas and come to a stop, my car dips close to 200rpm below idle and shudders slightly and goes back to idle.
My car just doesn't seem to have the amount of power that it should. My roommate has a 1.8t jetta with just a few more mods than I do and his car seems so much faster. I put an APR chip in my car and i still have a lag in the throttle..my car jerks..and it just doesn't seem that my car has the right amount of power.
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So my cars idle has been revving slightly from 9 to 10. siting idle sometimes it will do the same but from 10-11. when it does it shudders the car slightly.
So I stop by a local auto parts and get the check engine scanned.....it comes back as Idle control too high.
So What is that? The guy working there who seems to have some knowledge of turbos said it was either some control piece or a vacuum leak.
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So I have a 2012 TDI. 55k miles on it. Maintained 100 percent at he dealer. My wife takes the car to work today and three blocks away from the house, the car shudders and shuts off won't turn back on. I go get her so she can take another car to work and when I try to crank the car, it says Engine off, Oil pressure. Car won't turn on.
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I bought a '05 F-150 with a 5.4 with 112k miles on it a few months ago. It had been sold from an auction, looked really clean, and a good price. Not long afterward it started having issues with running rough at idle. That's when I found this forum and began reading. Tried different things but it only got worse and finally had a shop look at it. Cam phasers were not doing well. Not a cheap fix but more involved engine work than I had ever done so I had them do the work.
It ran fine for a few days and then the idle rumble came back slightly and the check engine light (CEL) came on. I read the code and it came back with a number that indicated air flow was an issue. Internet search said to clean the throttle body. Some threads on this site also said do the Mass Air Flow (MAF) sensor while I was at it. Much has changed since I used to work on cars as a kid. Everything has it own cleaner. I cleaned the MAF sensor with MAF cleaner. Cleaned the throttle body with throttle body cleaner (it was beyond filthy) and a toothbrush. Put it all back together (started late and it was dark by now) and took it for a quick run to see how it had improved. Instead of smooth, it started running even rougher, and within 100 yards went into fail safe mode. Now my mood is getting darker. Park it and go inside to watch the Aggies in their bowl game.
Good game but the truck is still running rough and I am losing confidence in my ability to do simpler things on it. I get up the next day and run codes on it. It had three codes all pertaining to air flow or the throttle position. I am thinking I screwed up the throttle setting somehow when cleaning or maybe only put the MAF sensor in upside down (that seemed unlikely since the screws only seemed to line up in one orientation). So I open the hood to check the MAF sensor just in case and find to my embarrassment that, in the dark, I failed to plug the MAF sensor back in. The problem was a loose screw holding the tools. I plug the sensor cable onto the sensor and take it for a ride. It runs great. Life is good. MPG is climbing higher on the onboard display. My confidence is returning even after humbling mistakes. After everything, I still love this truck.
So, now for the tune-up advice. The truck runs well but still rumbles slightly. Based upon everything, I believe it was well cleaned before it sold but maybe not fully serviced. Spark plugs were possibly never done. I intend to do a tune-up on it but do not know what has already been done so I'll assume almost nothing. The air filter looks brand new. The serpentine belt has nicks so that will be on the list. I am thinking of changing the following:
Spark plugs
Spark plug boots
fuel filter
serpentine belt
PCV valve
Oil was changed when the cam phaser work was done. So the advice really boils down to a question:
Is there anything else I should consider changing or doing or cleaning? I have not worked on cars much in the last 30 years but am beginning to enjoy it again.
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My car started a rough idle last night.... Pull to stop light, in gear, a/c on #1 and car shudders and acts like it's going to stall..... Went away as I drove a round a bit.....back this a.m. (after the warm up program ran) drove it a bit and was sporadic.....and even went away...then came back.....
Its worse when car is at stop and in 'D'.....little better with a/c off and/or in neutral......it finally threw the CEL today....... I had the fuel pump recall done about a month or two ago, car has 36k+ on it...... Anything I should have the service dept look for aside from what the fault codes might read?
[URL] .....
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My '03 W8 with 22,000 miles on it has had a slightly bumpy idle since I got it, the dealer has told me that this is not a big deal. This afternoon, however, I noticed that the idle has suddenly become much rougher, though it has not thrown a CEL. The idle is noticably rough at speeds below 10 mph and while it is fully stopped (in Drive, Neutral, and Park). I just picked my car up from the dealer this afternoon after it had a window control module replaced, and now it looks like I am going to have to go back to the dealer. I know that they are going to give me the run around and try and convince me that nothing is wrong with my car, but the idle is rough enough to shake the whole car and it sounds as if there is a new (or louder) noise coming from under the hood (other than the valvetrain noise). I suspect that this might be the clogged oil screen issue, but I really don't know what to do.
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95 350 Tbi does well idling in park and on the highway but at idle speeds it shudders. And if i slow down to make a stop it shudders til i get my speed back up or floor it. It have new plugs and wires, fuel pump, fuel filter, air filter, TPS, IAC, new throttle body gasket, new vacuum lines. What else could it be?
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I have a 1993 Mazda MX-6. For the past 2-3 years, my car shudders when it idles or goes less than 10 miles an hour. More and more lately, it has been shutting off completely when I drive slow or come to a stop. The first few weeks it was happening, one day while in a Burger King drive-thru (of all places- how embarrassing), it shut off and I couldn't get it to start again.
The mechanic I took it to replaced the distributor to fix it. It has not had a problem starting anymore since then, but it still shudders very hard. Could it be something else that's wrong?
I have also discovered that turning on the air conditioning keep the RPMs to stabilize, and the higher I turn the A/C, the more power it seems to get. Don't know if that is related.
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I have a 2001 1.8t tip wagon(75k) that that is starting to worry me. It makes a tapping sound (coming from back of valve cover) AFTER it is warmed up at idle. When the RPMs go over 1,000, the sound goes away. Is this the cam chain adjuster or tensioner??? Also, when the engine first starts up it makes a similar noise , only louder, for the first couple of seconds.
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I recently purchased a 2000 Durango with 151K on the clock. It looks like it was well taken care of, clean inside and out, and runs/drives nice. I just have 2 "concerns". There are times when the vehicles shifts from 1-2 and 2-3 it "shudders", only does it for a split second, and seems mainly when pulling out on some sort of upgrade, but not always. Otherwise it runs and shifts fine.
The second "concern" is that it seems to surge a little at idle. At a warm idle in park is when I noticed it. It goes from about 750 rpm to 950 rpm over and over. I haven't really noticed if it does it during regular driving.
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My '96 Honda Accord has about 174,000 miles on it. Three weeks ago I checked my oil and the oil was black and way above the full level. I had also been adding 8-9 ounces of coolant previous to checking the level.
My coolant temp gauge has never gone beyond normal range. Two mechanics said I had a blown head gasket. I decided to change the oil and filter and only put in 4 quarts of oil. The level is only up about 1/4 inch level and the rest of the dipstick is completely clear. My friends also checked and it is so clean, like there is no oil in the car, but I have no signs of oil leaking. My oil pressure gauge shows normal pressure.
I continue to add 2-3 ounces of coolant each week. Early in the morning the engine shudders a minute or two before calming to a normal idle. I only drive around town a little, 75 miles a week. Can I continue running the car in this condition? If so, for how long? There is nothing else wrong with the car. Is it worth repairing?
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My car shudders (headlights flicker, dash lights flicker, and car feels like it's choking/almost stalling) when I sit at an idle. Today it got super bad and the abs light flickered on and off when ever it would "shudder".
Live in so-cal where we just had heavy rain the last 2 days so I'm thinking it may be a wet ground somewhere but I'm not an electrician so I wouldn't know for sure.
Car info: 2.0 golf
Nothing done to it except straight pipe and intake...
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I have been noticing a squeaking sound lately, what it might be. I notice it most when parked in the garage and I am getting out of the car (obviously with the car in Park). It seems to happen when the car rolls slightly, forward and back against. I tried to take a video to capture the sound. The car was parked and shut off, and I was pushing the car forward and back to recreate the sound. The sound SEEMS to come from the front (maybe the right front), but it is not easy to tell.
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In the past month our 2005 Subaru Legacy has had a vibration(intermittently) where the steering wheel going slightly back/forth 60-70 MPH. I understand a wheel balance can cause this. However intermittently does not make sense. My wife simply speeds up to 80MPH and it disappeared or less than 60. Any clues?
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I have a 2004 Malibu Classic well maintained 2.2 L engine 20k miles. When the engine is warm in drive at idle, the engine shudders vibrates the dash and steering wheel. It idles smooth when cold. In drive it settles to a base idle about 575-600 RPM. When I raise the RPM with the peddle just a bit maybe 50 RPM it idles perfect. Otherwise the engine runs perfect, air cleaner and plugs are like new. Is there any way to adjust the idle up or identify what sensor controls the idle?
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I have a 1996 VW Passat TDI which has a 5 speed stick (they all did). Yes, it's really old but it runs great and gets 45 mpg. However, the model is probably not relevant to this problem. My question has to do with clutch performance. When the car is cold (and it's cold outside), the car sometimes shudders starting out in first gear for a couple minutes. I have tried to be extra careful letting out the clutch in these circumstances. Sometimes that works, but it doesn't eliminate the problem. After about 5 minutes or so the clutch starts working well as it usually does.
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I just bought a 2000 f250 diesel truck and am having problems with the ac. When I first turn on the ac it blows very cold and works perfectly but after about 5 or 10 minutes it will start blowing warm and slightly humid air for probably around 5 or 10 minutes and then suddenly the very cold air will come back. This cycle repeats over and over again and I'm not sure what is wrong.
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I ran into a new one with my 2000 1.8T Auto. When pulling out of my garage when I move the shifter from P to R, I felt a very strong jerk and the whole car shudders. Same from R to D. I drove straight to AAMCO which was the nearest repair shop. Although the drive was smooth (no additional noises etc) the acceleration was noticeably slow.
Recent work on the car:
-Timing belt replacement 3 months back.
-Battery replacement last night.
Engine light is on and came on 2 days back.
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Our 2008 2.0T Variant with 70K miles runs fine, except while running fully warmed up on the highway. Then, at cruising speed, the engine shudders if you try anything more than gentle acceleration. If you push deliberately on the gas at about 1,500 rpm, the engine shudders, fails to accelerate, and the MIL flashes. This has been going on for a few months.
Wifey is about to go on a road trip and, although she's adjusted to this behavior, I don't wanted her stranded somewhere. The engine is throwing code P0301 (got it read at AutoZone), Cylinder 1 Misfire.
I'm wondering why it only misfires under these conditions, and not, say, while accelerating off the line or while idling.
Any tips? I've already put a bottle of Techron through the tank. Car has had all recall/service bulletin work done, which as I remember included a coil pack recall a few years ago.
I wonder if getting the car into the stealership before her trip is a "must." (I don't have my own scanning tool in order to sequentially troubleshoot coil packs. I can at least check plug wiring.
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When idle, and especially when cold, my R engine tends to do some popping, I can see the RPM drop slightly when this happens and can also hear and feel it in the car and from the engine and exhaust. This only happens when idle, I have no other issues, no drop in performance and no CEL.
It actually has done this for a while now but barely noticeable. Now since 2 weeks it has gone worse to the level of being annoying. What this may be ? Injectors maybe ?
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Is it possible to slightly raise the Idle speed of our R32s?
And if so, how is it done?
Is there a procedure with Vagcom?
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