Question about 2001 Volkswagen Jetta TDI

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Check engine my check engine light was blinking and as I drove, especially excellerating, my car would shake. what's going on? (auto/gas car)

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  • notcarsmart Jul 20, 2008

    Would either of those make it happen just out of the blue?? I worked fine than after work I started it again and it all started then with no really warning of a problem that was getting worse or anything?

  • SamDodge Dec 22, 2008

    I have a 2003 VW Golf and a few months ago, the same thing happened. The mechanic said it was running on only 2 or 3 cylinders because one a spark plug needed to be replaced. I had a full tune up (spark plugs, wires, filters, etc.) and a month later, it happened again. This time, the car had been sitting for a few days and the weather had been cold, rainy and then warm and cold again. It didn't happen again until today, during a snow storm. I put some dry gas in it and it seems to be fine. The check engine light has been on for quite a while (o2 sensor needs to be replaced), but this shaking/engine light blinking problem has happened at least 1x a month.

  • NinjaD Mar 25, 2009

    When I step on the gas, the check engine light started blinking, and just stayed on. As I speed up the the car jerks a litlle bit. And when I'm at a red light, with the brakes on the car jerks as well.

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Hi notcarsmart
im dave

there is a common problem with this generation jetta. on the crankcase ventillation system you will find a y-shaped piece of rubber that is prone to disintergration and leaks. check it out and if that is the problem replace it. to reset the light (and you should try to keep this in mind for future use as most of the time that the check engine light(MIL) comes on in these vehicles there is nothing wrong and no codes stored) park the car with the engine running. Open the drivers side door and remove the fuse box panel cover. You will see a series of fuses in there but you need only to focus on the mini ones on top. The fuse you need to pull is the third row down from the top in the centre and is a 10 amp fuse (i believe it is marked as MIL on the fuse directory). Pull it out with the car running. The car will stall out but that is perfectly ok...no harm done. Re-insert the fuse close the panel and restart the engine. The yellow light of doom should now be out. If the light comes on again rather quickly there is probably a fault code stored. Everyone who owns a VW should own their own OBD(On-Board Diagnostics) tool. www.obdtool.com has one specifically for VW's from 1996 to present for around $75.00 and an optional software upgrade for a little more. It only requires that you own a computer to use it (which I believe most people have nowadays). A shop charges you for each time they pull your codes so the first time you use it will pay for itself. Also if you have friends/acquaintances with VW's im sure they'd rather give you $30-40 dollars to pull the codes than give a shop $80. And you can reset the light with the tool. Another more unlikely cause of your light and shake is the MAF(Mass Air Flow) sensor but you would need the diagnostic tool to check or swap it with another Jetta owners known good MAF sensor.

Posted on Jul 20, 2008

  • dave barry Jul 20, 2008

    hi notcarsmart

    dave here



    with those era VW's that light comes on often with or without a problem out of the blue. best thing to do is to use the info above to reset the light and see if it turns on again.

    like i mentioned though if your car started shaking i would look at that breather hose first.

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Because you described the problem happening when it was moist outside and on acceleration, it is likely the ignition coil. Wet the engine (coil) and if the problem worsens it is the coil. These coils get hairline cracks in the plastic and trace sparks under load and at idle.

Posted on May 06, 2009

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Posted on Jul 21, 2008

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