It happens in the morning or on cold starts. The car has a rough idle and the throttle response is terrible. Its very sensitive and jerky. Could this be bad spark plugs? Its a 2006 2.0T and its had all the maintenance done.
View 5 RepliesI'm working on a 06' Passat 2.0t and it runs rough only at idle like its misfiring only vag-com says no misfires and no engine codes. MAF looks like it may be a little low on performance but should be ok. I tried swapping out coil packs but no change. I changed the pcv breather and hose, cleaned the carbon off the valves, swapped the throttle body with a known good one, and changed the piston on the fuel pump and still no change. It smooths out when I turn the a/c on but that's the only thing that changes the idle.
View 7 RepliesI own a 2010 elantra. I'm going through plugs like crazy. I've changed it twice and the dealer has changed them twice for a total of 4 sets. I have 64000 Kms on my car. The problem is rough idle when ac is on. I'm assuming drag or load on the engine makes plugs work harder.. So the last two sets of plugs the dealer showed me the plug and the white spark plug casing was burned through? Kinda getting sick of the bandage approach the dealer is throwing at me. He said if it happens again which I'm sure it will they will sort it out in more detail to find the cause.
View 4 RepliesI have a B5 99.5 AEB and having rough idling. Started the car in the morning seem fine. Later that evening started up again in a warm up idle and then the car shut off. Tried starting up again but took couple of minutes. Pumped the gas piddle started up but looking at the idle gauge needle was bouncing around. I don't think i have an vacuum leak.
View 2 RepliesI got an 800rpm rough idle, no serious lack of power, every time after filling up w/ gas she starts slowly (bout 3 secs) and then tries to die. she catches herself and revs from 400-1200 for about a minute, then drives away fine. Getting:
17544 - P1136 Bank 1 : System too lean
16825 - P0441 Evap ECS : Incorrect flow
16684 - Random/Multiple cyl misfire detected (intermittent)
16688 - Cylinder 4 : Misfire detected (intermittent)
Also have: 01039 - Coolant temp sensor(g2) : open or short to plus? (intermittent)
Doubt the last has anything to do with BIG problem, but my temp sensor on ly gets off 0 when i am moving and using A/C...is this going to cause issue now/later/ever?
I drove home Saturday morning from work with no issues. Car sat until Monday night and as soon as I had to stop at a light it was idling very rough where the rpms were jumping 3-400 up and down. I make it to work and on the way home I experienced the same idling issue along with some misfiring. I scanned and came up with the following codes. I have no CEL. I had my APR flash, Forge Intake, Turbo back exhaust all installed 2 and a half years ago. I have owned the car for four years never having replaced the DV or PCV. 87,000 miles.
10 Faults Found:
001090 - EVAP Emission Control Sys
P0442 - 001 - Small Leak - Intermittent
012403 - Fuel Pump Circuit
P3073 - 004 - Electrical Malfunction - Intermittent
004759 - Pressure Drop between Turbo and Throttle Valve (check D.V.!)
P1297 - 001 -
004243 - Bank 1; Fuel Measuring System 2
P1093 - 008 - Malfunction - Intermittent
000768 - Random/Multiple Cylinder Misfire Detected
P0300 - 002 - - Intermittent
000769 - Cylinder 1
P0301 - 002 - Misfire Detected - Intermittent
000772 - Cylinder 4
P0304 - 002 - Misfire Detected - Intermittent
000770 - Cylinder 2
P0302 - 002 - Misfire Detected - Intermittent
008825 - Leak in Air Intake System
P2279 - 002 -
000771 - Cylinder 3
P0303 - 002 - Misfire Detected - Intermittent
My 1.8t is very rough at idle when cold, smooths out when over 1000 rpm and when at normal operating temperature. Code reader says 171 and misfires.
View 6 RepliesI have a 2006 Ford 150 with about 120,000 miles on it... For almost 9 months now I've had a really rough idle and I can't seem to get it to smooth out. I've tried new plugs, tune up, new fuel filter, higher octane gas, fuel injector cleaner, octane booster, cleaned my mass air flow sensor and nothing works... I've checked the trucks ECM for any codes but it comes up clean every time...
View 6 RepliesMy 2011 Hyundai Accent 1.6 runs fantastic and has since I purchased it three year's ago until two weeks ago when my domestic partners friend changed the spark plugs, oil, air filter and stuff so I could go on a short trip and back. About 200 miles into it I pulled into a rest stop and noticed it was rough before I put it in park. As soon as I put it in reverse it was running rough and sounded like it was going to die. Forty miles later the check engine light was on and it was running terrible. A parts store recommended different spark plugs. A nice man who was there overheard the conversation and offered to put them in for me since I know nothing about doing. He said he gapped the spark plugs at 0.40? When I started it it ran like a dream until about 75 miles later and it began doing it again but the light never came on. It is doing the same thing which is a rough idle when stopped but it smooths out when I put it in park.
View 3 RepliesI have a 2006 Hyundia Sonata. I idles really bad like you pulled 5 of the six plug wires off when you put it in gear. Once you start moving a couple miles an hour it is fine. It is also perfect in park or neutral, not a hint of a problem. Put it in drive or reverse and it almost stalls.
View 13 RepliesMy 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?
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Idles ok in park and neutral. Gets worse while in gear. Car has high miles around 160.000. Fuel injection flush? Fuel Filter? Vacuum leak, and where to look first? No check engine light, no misfire codes just a rough idle when in gear.
View 3 RepliesI've been having a curious issue with the engine in the Passat. When I put gas in the car, it generally is hard to start and stalls. This happens once or twice, and then the car runs great. Sometimes the check engine light will come on, but I haven't been able to read the codes. The mechanic said that the car was driveable. I am curious for potential causes and solutions?
View 4 Replies2004 1.8T, 44,XXX miles, Tip. So I left work today. As I was pulling into a turn lane, very slowly, and coming to a very gradual stop (maybe 10 MPH) the car felt very slightly rough. it wasnt even very noticible, but seeing as I notice every little thing, I picked up on it. It felt like the road was maybe a bit bumpy, but I wasnt sure. The Tachometer was at maybe 800-900 RPM, not really out of the ordinary, but something seemed odd.
So, just as soon as I thought "Well, at least the CEL isn't on", the CEL comes on, blinks 3 or 4 times and goes out. Other than what seemed to be a slight "roughness" for a few seconds, the car felt and ran as good as ever. CEL stayed out. I came home, then went to Autozone to see if i could get it scanned, but they were totally useless.
So - if the CEL went out, would a code still be stored? I know blinking is bad, but it went out after a few blinks. It didnt even stay solid, just went out. There was no message on the display screen either (no "Stop Car" or "Emissions Workshop" etc) First time this has happened. I read on PW that it could be the ICM. I'm hoping it's just a random anomaly.
B5 passat. Recently she took her car to the shop bc her cel was on. turned out her turbo was blown so she got it replaced with a brand new one along with the oil pump. about 3 days later the check engine light comes back on..idle is very rough and it feels like its misfiring.
First thing i did was check the coilpacks bc it was why my audi would always misfire but it didn't work. So she took it back to the shop and they said that her ecm is dying. Ive never heard of that happening.
The codes that came up from the CEL the second time were p0171, p0172, p0173, p0303
When exiting off the freeway and stopping at the light, my car felt as though it was bucking and idling very rough. I put the car in Neutral and it subsided a bit but the lit gauges were pulsing with the idle. It felt as though the car was going to die. I put the car back into Drive and it drove fine. I pulled over and shut the car off. There were no warnings or any other indicator lights on during this time. After shutting the car off and leaving it for a couple mins, I started it back up and the engine light was now on steadily. The rough/bucking idle was present as well. I ended up driving the car to the dealer where it is now being diagnosed and I haven't heard back.
View 6 RepliesSo far I have only experienced this once (today). I was on the freeway which ends and becomes a State Route. When I stopped for a traffic light the idle became rough. I put the car in neutral and gave it a little gas and it seemed fine. It has not done that again at this time. No CEL or anything came on. What do you think?
View 6 RepliesSo every once in a while I would start my car and get a rough idle but not too bad. I got a cel after a few times of this happening. I had a misfire on 1 and 4 and possible misfire on 2. It was ok for a a couple days. But during the last few days I'll start it up and it's fine. But then if I shut it off and restart it will have a rough idle again. Also today I got gas and then it rough idled and when I would shift or put it in neutral the rpm would stay up and drop slowly down. Like if I shifted gears I could almost do it without the rpms dropping at all. I've got 110k. ??
View 6 Replies 03 Passat 1.8T auto/tip, 188k miles. Had issues at first with a ruff idle, checked for leaks, found nothing (sprayed cleaner on all lines & idle never changed), unplugged MAF - no change, cleaned inj - no change, coils, plugs, fuel filter changed - still ran like crap, swapped out upstream o2 sensor with a known good one too.
Just didn't seem right, & I could only think cam sensor, ecu, or timing. So I checked timing first on the crank, then cam to VC marks, all lined up. Pulled the VC off, & intake cam was off a tooth. Adj it, rough idle went away. Removed some vac lines from the thread I found on here, kept some of the PCV components. Car runs better now than before. BUT...I have no power till 2600 rpms, & then it's a burst of power & car runs fine if I keep it above 2500 rpms. I'm going to hook up my boost gauge from my srt & see if I'm not getting any boost at all, but what to look for
As of late, my 06 Camry (I4) idle's real rough @ 600 rpms when in park. It stays the same in drive with the A/C on. However, when I switch the A/C off, for about 2 secs, the idle will be smooth before dropping down in rpms. Some folks have said this is normal, but I've had this happened to my car before. I've got 135K on it so I'm guess a tune up is in order.
I'm new in the game of working on my car myself since a past issue with the dealer on my '06. So if all is needed is a tune up, I can do that myself with the parts of my choice.
2007 Sonata V6 with 72K miles.
The car has developed a rough idle while in gear (i.e. when stopped at a stop light) and park (i.e. after I start the car).
It's starting to get a little annoying since I'm used to a very smooth idle.
I think this issue started within the last 2-3k miles.
Plugs were allegedly changed at 30k. A full tuneup was done at that time.
Wires are still original.