Passat (B5) :: Rough Start And Check Engine Light Came On
Nov 3, 2011
When I turned on my 2005 Passat V6 this morning, it idled very rough and the check engine light came on. Kind of sounded like a misfire. After about a minute or so, the engine ran as it always has....normal. Smooth as ever. Well I had it scanned at AZ and they said it was in fact a misfire from two of the cylinders. So then I called my local VW service department and the guy there gave me a no nonsense over the phone diagnosis, he told me that he owns a V6 Passat and he encountered the same issue on several occasions when the outside temperature drops precipitously over night. He stated that the misfire is due to condensation in the ignition/coil area. He stated that it is in fact a very common problem and that I would be fine and that the light would go away on it's own. The car is running fine. Should I really worry?
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Weird problem on my Passat today. First the engine light came on...followed by rough idling. It smooths out when moving, but rough again when stopped. Noticed that turning ON the AC makes it a little smoother...but when you turn off the AC, resumes the rough idle.
Already made an appt with the dealer tomorrow...but wanted to see if this problem is familiar to other owners. Either way, I will update once the dealer finishes diagnosing the problem.
The car has been perfect up to 30k miles...now 2 problems in the last month.
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Rough start like some thing missing, check engine light came on, shut off car checked my oil, ok, restart runs smooth but check engine light stays on, went to dealer 8 mile drive, car ran fine ????
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I have an 03 Passat with about 70K miles on it. My daughter put rug in it this morning (about 7 gallons) and since then the check engine light came on and the car is running really rough at stops. While accelerating, it seems to be fine. It is also getting about 10 mpg less than normal. MIL codes: P0300, P0301, P0302, P0303, P0304, and P0171. He said the P03xx codes were related to misfirings on each cylinder. The P0171 is a bank 1 failure (?). What do those codes really mean and could they be related to bad gas? Sent her off in my TDI JSW so she's not out on the highway if the Passat decides it doesn't want to go anymore.
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Wifes car began to idle very rough and check engine light began to blink and beep, I took it to the mechanic today and he informed me that my control module was no good and it was a $400 dollar piece. I said go ahead get it done, cuz she needs the car and i couldn't afford to not have it done immediately. Question I have is does this small-ass piece really go for that much on average and what control module is it?
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I have a 2005 jeep liberty 3.7L with 60,000 miles on it. The engine light when on 2 weeks ago and gave a p300 code. the dealership replaced coil and plugs, I believe. Then would start rough when cold, the engine light would blink for about 10 seconds then remain on. the car runs just fine except when cold....first minute of starting it. they checked for head gasket problem, and cant seem to find the problem. They told me that this could just be something that happens. I don't believe that. I have no loss of power, no hesitation. Runs fine 99% of the time
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Yesterday my car had a rough start (lasted all of 5 seconds) and it threw the check engine light on. Now other symptoms. It was a rough start, almost like a misfire then it idle fined, and drove my 60 mi commute home without issue. I had fine acceleration, gas mileage idle etc.
I got home and turned it off for 10 min and it then started normally and ran fine again. I'm thinking it was just a random miss that threw on the light, but I'll take it to Advance to get the code later today.
I replaced the plugs about a year ago with cheap-o plugs so it may be time for a replacement again. I thought maybe an o2 sensor but there wasn't a drop in mpg, at least anything noticeable.
And its been a few days since I've gotten gas so I'm doubting just a gas cap issue... The CEL did NOT flash, only solid the whole time.
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I have been experiencing some issues with my '06 rio5 (same engine as your hyundais). this forum is way more active than the kia forums, so figured id give it a shot here.
I am experiencing a rough idle at start up while the car is low on fuel (<1/4 tank). it idles rough for a few seconds, the check engine light flashes a bit, and then it runs fine.
The car is an '06 rio5 with approx 19k miles on it, five speed manual. Also, sometimes after refueling and it will just shut off while waiting at an intersection. Not sure whether these two issues are related, but thought i would mention it just in case they were.
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My wife drives a 2004 passat 4 motion 1.8 T that for a couple of days has been acting up. By acting up I mean it will turn over but won't start. When this happens and after letting the key out of the start position, the epc and cel light will stay on. After letting it sit for a while it will start.
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Coming back from Busch Gardens today. Filled up at a Shell. Got on the road and within minutes got a check engine light and the throttle started surging like when you have water in the tank (know from past experience-don't ask). Is the check engine light what would come on if I had water in the tank?
I was able to make it home after adding one bottle of dry-gas but the car is still doing it...major loss of power during mid-level throttle. I was able to keep the engine light from coming on if I was very careful with the throttle and kept the revs around 3K or higher.
Hate to take it to the stealership if not necessary. Burned 1/4 tank of gas on the way home. Should I add a second bottle of dry-gas and top off the tank with fresh gas before taking it in? Don't want to damage injectors or?
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Naturally, the dealer service close to me and my regular repair shop are both closed today, so my mind is racing. My check engine light came on a couple weeks ago and I have been waiting for my guy to get back for it's full 80+K workup/service. That was to be right away.
This morning on my 5 mile trip to work after my car sitting for a day, the check engine light came on as usual (with no seeming weird behavior) - but as I was going through some S-curves, the EPC light came on and it felt as if the engine was throttling down, not knowing how to shift, something.
I wasn't far from my parking lot so I drove on here, parked nose out and popped the hood. Nothing visible (not that there would be necessarily) but weird exhaust smell.
I just went back out after lunch and it cranked for a good 20+ seconds over three start attempts before it finally did. Tach went all low and jiggly before kicking in and revving steadily at 1K. However, white puffs of smoke began coming out the exhaust - weird smell (e.g., unburnt fuel perhaps...)
I'm only in a mild panic as I'll likely have to have this towed in and I don't have a clue what I'm facing. I get conflicting tales online as to what it might be but I'd love to impose on your brains if you have some insight to share. I've read about coil packs, throttle bodies, and more.
The only mechanical issue I've had with this engine was that I had the intake manifold assembly replaced right after my warranty went out. Had the throttle body cleaned then, too. Nothing since other than regular services according to vw standards.
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Car dumbie back again with another question.The diagnostic for my check engine light indicates numerous cold start misfire codes. The cylinders are OK. That was checked during the diagnostic.The fuel intake is carboned up. It is recommended that I clean the intake manifold. Does this mean cleaning the fuel injectors, the throttle body or both? 2006 Passat VW....
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My mechanic tells me I need the intake manifold gasket replaced (check engine light on, engine surging, running very rough). How much damage can I do to the car by doing this repair myself and screwing it up? I've done lots of repairs on my car before -- brake pads, rotors, replace oil pan. I also have a copy of the manufacturer's shop manual.
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New 2012 Tiguan S with a manual, 800 miles and the check engine light comes. Seems to idle a little rough, at least the idle seems to fluctuate a bit. The real disappointing part is I took it in to the dealer expecting an easy fix within an hour, its now been at the dealer for 2.5 days and they'll have it over the weekend as well. They tried putting several parts in it, still didn't fix it. They called VW who said pull out the new parts, put back the old parts, and apply some software update. Dealer did that, still not fixed.
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Our R32 has 2428 miles- and today the check engine light came on and it started to run pretty rough, babied it home and the the light was blinking when I turned into the driveway.. I know that booklet 3.2 in the owners manual is diagnosing catalytic converter issues...I have always used super unleaded, it hasn't even reached the halfway point of the first service.
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Filled tank with 8 gallons of 91 octane to top off. One hour later noticed car running rough at idle then check engine light comes on. Could it be the coil pack? Car has been running very well until now, and this Gremlin appears. I don't think it's the gas.
2004 -V8 Treg
52,000 on the odometer
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I recently replaced the head gaskets in my 2003 Malibu. First time and all seems other than it runs rough at stop lights. The check engine came back on and so I had it read and there is an air flow issue. Is there anywhere that I can get a schematic for the vacum lines? I have all over and cannot seem to find a loose or broken one.
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My check engine light came on in my 06 toyota avalon. i had the code read at pepboys and they said it was something like 0300 misfire. i took it a few days later to my personal mechanic and he said nothing popped up when he tested the code. i notice the car (engine) is running a little rough though. What is the firing pattern as i want to try and fix by putting new plugs and coils.
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I have a 2004 VW Touareg with 116K miles. Yesterday the check engine light came on and she is running very rough at low RPMs. The manual tells me that there is either a problem with the exahust manifold or an O2 sensor is bad. It feels as if she is struggling for air. When you start the vehicle the check engine light flashes then stays on in the cluster. What can I expect when I take it in to the dealership? Is there anything I can check before I take it in?
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Today I went to the gas station and after I gased up and turned the car on my car started idling rough, almost to the point of cutting out. I started out on the road and my check engine light started blinking. After some time it stopped and just stayed on. The whole front end shakes pretty bad when at idle. The car has trouble accelerating till roughly 35-40 mph then seems to ride ok. I'm not very car knowledgeable, but I do take care of my car. I know I need to replace some of my hoses and spark plugs soon, but am worried that it may be more serious.
What I would like to know is: 1. What could possibly cause these issues and 2.
2003 Mazda Protege
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I just purchased my first foreign car ever. it is a 2002 Elantra it idles very rough changed plugs using NGK and wires new fuel filter and ran 2 full tanks of high grade fuel with STP fuel injector cleaner. but had no effect on idle also have no check or service engine light. What to check next?
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