Jetta - Volkswagen :: 2002 - Misfire P0301 - At High Throttle CEL Flash
Feb 22, 2011
2 002 Jetta Bad misfire P0301 a bit long. 02 jetta gls with 2.0 AVH engine auto trans. over summer my brother overheated it & blew head gasket & valves. All parts listed are new between aug and now. I repaired engine as follows new head & bolts head gasket timing belt water pump coolant flange on drivers side new fuel rail and injectors car also has new coil pack, new VW plug wires and 1 week ago new iridium plugs my brother didn?t want car, so i bought it from him. Ran great after I rebuilt top end.
Car did 140 on the turnpike & ran great. once or twice while giving moderate to high throttle CEL would flash and I pulled P0300 as a pending code. Problem stopped after 2 days. last week after 4 hrs of idling(don't ask) started misfiring and CEL flashes constantly P0301 The misfire seems worse at idle and low speed. Car will get to highway speed but has bad pickup. This is what I?ve done/checked New iridium plugs Plug wires 4.5 ohms Coil pack is good and producing enough spark at each wire MAF sensor cleaned Cyl 1 compression good all injectors are clicking and when disconnected cause appropriate CEL error code Brought car to VW dealer for diagnosis VAG COM shows multiple misfire on cyl 1 Mechanic confirmed all the steps I took and components tested ok. He tried new coil pack, new plug and wire for cyl 1 and no change.
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My 2.0L Jetta had an intermittent misfire, only at idle. I took it in to the shop, and they fixed a vacuum leak and replaced the plugs. The car drove home fine, but the next morning it was misfiring at all speeds. When it got back to the shop, they said that the coil pack was bad. I wonder if they might have done something to cause the pack to fail, since it seemed to be working fine before I took it in. Their explanation was that the coil had become accustomed to sparking at an adjusted (more powerful) setting to account for the vacuum leak, and when it tried to go back to the factory setting, it quit working. Also, all of the stress from running at a higher output wore it out.
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I have an 02 2.0L Jetta which has started to die when slowing down or stopped. So kind of scary when you have a line of cars waiting behind you at a stop light. It only started this past Sunday and has happened 6 times since then (3 of times yesterday). All the indicator lights on the dash flash and it settles to the CEL, ABS, Bat and Seat belt light (like when you start you car, but don't turn it all the way to engage the starter). The clock and tripmeter reset. everything starts back normally when I put it back to park, turn completely off and back on.It seems like it should be an electrical problem but I'm not sure where to start, the battery and the fuses seem to have a good connection. I don't think its the alternator since the battery is staying charged too.
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I have a 02 Trailblazer that on Monday it gave me a code of P0300 (Random misfire), then two days later P0301 (Number one misfire); (I replaced plugs, boots and cam sensor) ran fine for 1 day now its a P0758 code (Shift solenoid B Electrical).
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VW Jetta SE 2.5L... Took my car to the dealer for a check engine light, the code came back P0106 which states I need my throttle valve cleaned and the dealer also said I need my brake vacuum pump replaced.. Do these go hand in hand? How should I proceed with the dealer? I have only 60,000 miles on my vehicle was there a recall on this issue? The dealer already updated the software in the technical bulletin.
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My wife's 2011 Volkswagen Jetta (2.0 I believe) is misfiring again. We took it to the dealership about 6 months ago and they said that the ignition coil had gone bad. They replace the ignition coil and said that the plugs needed changing as well. I went to Auto Zone and got some decent plugs and changed them myself at home without much problem. It seemed to work with the problem (although it didn't seem to completely fix it) for a while, but it just recently went back to misfiring. The current symptom is that it seems to misfire when the car is warming up, but misfires less when the car is warm.
The dealership says that the plugs that we got were not recommended by the dealer (they recommended Bosch) and that they need to be replaced. I think this is BS and it is not going to fix the problem.
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Recently (5 weeks ago), my 2004 Jetta misfired, which caused the car to shake very noticeably, especially at lower speeds or while idling. The misfire was accompanied by the smell of fuel on the driver side and triggered the check engine light to flash. I took it to the shop (a VW dealer). They ran diagnostics, found it signaled a misfire (but no other major issues/sensors) and told me it was due to the spark plugs/wires. I was dubious, as they were not too old, but I allowed them to replace them anyway, as they assured me this would fix the problem.
Just this week, however, another misfire occurred, also accompanied by the smell of fuel and shaking. This time, the check engine light remained on (constant) for 2 days, and on the third day, it was off. I brought it back to the same shop to try to figure out the real cause of the misfire, which obviously was not the previous spark plugs. My city gas mileage has also decreased over the past month - down to about 20-21 mpg from 23-24. What could be causing such a reoccurring misfire without signaling an issue with a sensor or other part?
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I started this string over a year ago (see below). My car continues to suffer the same problem. It now has 62,000 miles on it. I finally decided to take it to the dealership seeing as my local mechanic and 2 VW specialists could not figure out what is wrong - 2 new sets of coils, 2 news sets of spark plugs, and several expensive diagnostic tests that reveal nothing later. The dealership also has no clear idea what is wrong with the car and VW itself has not been useful either (rather useless really). No service bulletins have been posted for my car. I have tried several additives (Techron, Sea Foam) but that did not yield any results. The one thing I have noticed is that the misfiring ceases to occur when the gas tank is a little less than half full but begins to occur again as the gas gauge reaches the refill zone. It misfires like crazy when the tank is full. I am thinking of replacing the wiring harness for the fuel injectors but this is yet another best guess as to what might be wrong with the car.
I have a 2006 Jetta with a 5 speed manual transmission and 35,000 miles. The engine randomly misfires causing it to stutter or stammer. The check engine light is on and has been for several weeks. Occasionally the check engine light flashes. I took it to a local mechanic who ran a series of diagnostic tests (no vacuum leaks) and they recommended having all the ignition coils replaced for all 4 cylinders. They also replaced the fuel filter. I did so but the problem soon returned to which they referred me to the dealer. I decided to take it to a VW specialist in town and they replaced the spark plugs for all 4 cylinders. They noticed that some of the plugs were black with a buildup and some were clean.
Codes listed:
P0202 - Injector Circuit Open Cylinder 2
P0300 (2 separate listings) - Multiple Misfire Random
P0302 (2 separate listings) - Multiple Misfire Cylinder 2
P0304 (2 separate listings) - Multiple Misfire Cylinder 4
P0301 (2 separate listings) - Multiple Misfire Cylinder 1
P0201 - Injector Circuit Open Cylinder 1
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MK4 ... I have a 2002 VW Jetta 1.8T with that weirdo tranny (09A for those in the know) with the psuedo manual tiptronic VWtransmission. I don't think the tiptronic has anything to do with this, but here's my problem.3rd gear has gone missing. The car will over-rev high in 2nd and then BAM into 4th (and not, using the Tiptronic does not ameliorate, nor does using the 2nd to 3rd to 4th on the automatic shifter).
Interestingly, when doing tiptronic the car will reflect on the dash that it thinks it is in/going thru 3rd, but obviously is not. HOWEVER, When it rains, 3rd gear re-appears.I would not say things shift like a dream, but certainly not like the aforementioned nightmare. Up shift and downshift occur on time with an occasional hard shift.
My thoughts are that this is due to solenoid(s) conking out. VW says it is lifetime ATF and makes changing it next to impossible for an ape like me. Is it definitely something (solenoid or something else?)?
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I have a 2003 Jetta. After it runs for awhile, if I have to shut it off and start it back up - I have to pump the gas to get it started and it idles high and gets flooded. I can smell gas after it gets started. A mechanic already replaced the ignition coil, which wasn't the problem at all.
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2003 Jetta station wagon, disc brakes all around.
Recently changed all 4 pads + the rear rotors. about 2 weeks after this the car started making a horrible noise from the rear driver side wheel- like the tires were dragging metal.
We took off the wheel last night, replaced the caliper, and discovered one caliper bolt was missing. We think this caused the caliper to misplace itself and start riding the rotor. The caliper was also in pretty bad shape so we went ahead and replaced it because we had already bought the part.
Anyway, we put everything together, drove it last night a short distance, everything was fine.
Today after driving apx. 25 miles since the replacement, the car has started whistling. I'm not sure where the noise is coming from, but it only happens at higher speeds, and I don't know if turning affects it but it happens going straight. It is a cyclical type of sound and goes away when braking.
Note: when replacing the caliper, my dad did not use the little metal brackets because we couldn't figure out how to place them and didn't think we needed them. Would that cause this noise? Is that dangerous to do?
UPDATE: I've mislead you all! Upon further inspection the whistling noise is coming from the serpentine belt area. I had assumed that it was coming from the wheel because we had JUST messed with it, but I was wrong. Now I'm wondering what's going on with the belt!
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My car occasionally makes a high pitched whine while driving it's very loud and very frustrating. I've come to the following conclusions: It only happens when the car is warm, it only happens at speeds above 40mph, it doesn't correspond to either accelerating or decelerating, it happens either way and in between. I've had people in the car while it's happened and the noise seems to come from the driver's side rear wheel. Sometimes it gets so loud and then gets even louder when I begin to apply the brakes, it's as if it starts screaming.
I've had mechanics take apart the complete brake system on every wheel and put them back together. They've put anti-squeal on the brakes to no avail. While driving the noise can come and go, with no apparent reason why. It happens in rain and on warm sunny days. Also, the noise seems to oscillate as if it is something that's spinning, I'd guess it's at approximately 160 beats per minute. This has been occurring for about a year, it was not this way when I got the car. No mechanics have ever found anything, but it's so loud! And so annoying and embarrassing. This can't be normal, what is it!?
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I was driving on the highway in my 2001 jetta (332000 km) on the cruise control yesterday and suddenly it just started slowing down and stopped. Putting my feet in the gas did nothing . Before stopping completely the battery light came on. After won't start anymore, just making a sound like it is trying but turn in the butter. To be honest the check engine has been on for a while but we are pretty sure that is the glow plugs because it is a recurrent problem... Nothing else light up and there was no sound or smoke.
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I've got a 2002 Jetta TDI that's been playing stump the mechanic for the past two weeks. I've had about $800 worth of work (most of which had error codes and were necessary), but given that the next suggestion is to replace the fuel pump at a cost of ~$2k, I figured it was time to get some additional opinions.
When the car is completely cold, the engine typically turns over a few times before starting up. Sometimes a few turns into seven or eight, but I've never had it not start. The problem comes when I've driven it somewhere (like to the grocery store, yoga class, or to get gas, to name a few) and try to restart it after my task is done. The warmer the engine, the lower the chance it will start. In it's most extreme, the car will not start at all, and I have had it stall out on me at stoplights if I do manage to get it started.
The car has had a history of intermittent hard starts in the four years I've had it, but nothing at all like this.
In the past two weeks, my mechanic has replaced the coolant temperature sensor, thermostat and seal ring, serpentine belt tensioner and serpentine belt, power supply relay, fuel pressure regulator and seal rings and the crank sensor. They've also been able to see that something is off about the fuel pump since they can see air bubbles in the fuel line, but thought I could push the car for a while without having to replace the pump.
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What the problem is, what to do about it, if VW is doing anything if you complain enough.
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Ok, I own a 1990 Volkswagen Jetta GLI that I bought from my neighbor about 4 months ago, and recently, it started having problems. It's idling very high, around 1,500-2,000 rpms, it's leaking coolant, not from the bottom of the reservoir but from the top, and it's slightly overheating. Oh yeah, the speedometer stopped working. I've recently taken it to the shop twice, the first time to get the reservoir replaced, and the second time to get radiator replaced.
I have had problems with it stalling in the middle of the highway during traffic because it over heated. I commute daily to and from college and I want to make this car last as long as possible as I do not have the means to buy a new car. I have noticed that there seems to be a build up of air in the reservoir. I witnessed it leak, and there was a hissing sound coming from it. Also with the speedometer, the light doesnt turn on for it and that there is a clicking noise coming from it. Any tips?
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I have the most annoying high-pitched squeak/whine coming from my front left tire. For those who cant see the video, its making a high pitched, metal on metal noise... at all speeds... especially when making slight turns... my foot was not on the brake when the video was taken (coasting around the parking lot at around 10 mph)...
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I have a 2009 Corolla with a 1.8 L. I have the misfire code P0301. I have changed the plugs, ignition coil, and fuel injector on cylinder one. It still has the misfire.
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I drive a car I am extremely reliant on. I don't have money to buy a new one and I may be a bit over protective of this car. It is in excellent shape, I bought it with 96K and whoever owned it took good care of it. I changed the battery pretty much right away, and the auto parts store guy said it looked like it was the original battery. So I suspect the timing belt is original too, (along with the clutch, which works great BTW). I don't know anything about cars short of what I have heard on CT, but it seems there is a trend towards having to change the timing belt at 80-90K And I know that a worn out timing belt can have no symptoms and essentially ruin your car if it breaks.
I took my car for the blue plate special, and it has been to the dealer a couple of times for some repairs where they also do the general service and see if they can find something to charge me for and in all cases, my car had nothing they would identify and repair. Fluids are good air filters are good etc. When I took it to the little shop on the corner I got the same report, and when I picked it up I asked, well how does the timing belt look? And he said. I can't tell you, you would have to take it apart to find out. So my questions are, as I do not know if the timing belt has been changed by previous owners. should I just go for it and have someone change the timing belt as part of my regular maintenance plan now, or is there some nifty way to find out if it needs changing without having to spend an arm and a leg?
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So here's a stinker that apparently has my mechanic puzzled. A few days ago I brought in my 2002 Jetta wagon in for a headlamp bulb change and a oil change. I pull out, but by the time I get home the check engine light is on. The manual says it's an emissions issue. I plan to make a garage visit on Thursday. they call me and say that they have my hubcaps...for some reason. OK, well, the next day, I am accelerating to get onto the highway, and suddenly, there is a big power drop and shudder. I pull over, call AAA and they take me into the garage where I got the oil change. Today, they say that a number of the spark plugs were out, but that it was strange because the corrosion made it clear that they had not been disturbed or pulled off in any way. They said that the spark plugs accounted for all of the car's symptoms. But we could not figure out how multiple spark plugs came out.
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My mechanic says I need to replace both front sway bar links on my 2002 Jetta....I am, of course, hesitant to do it at this price. How critical is it to replace? Can I get junk yard sway bars to make it cheaper? And can I do it myself (have no experience fixing anything....
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