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    VWVortex


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    Thread: P0303 code

    1. 10-10-2007 04:39 AM #1
      My 2001 VR6 Jetta's check engine light is on. The code reader shows P0303 (cylinder #3). I replaced the spark plugs which were dirty. But the engine still runs a little rough and after clearing the code the code comes back on after hard acceleration. Any suggestions? Thanks

    2. 10-10-2007 04:43 AM #2
      coil pack, plugs


      Modified by diive4sho at 3:49 AM 10-10-2007


      Modified by diive4sho at 3:49 AM 10-10-2007

      Brandon A.
      BAAK2BASICS TUNING LLC
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    3. 10-10-2007 04:51 AM #3
      make sure the coilpacks are seated not popping up....did you change plugs with same kind that were in there before??
      Brandon A.
      BAAK2BASICS TUNING LLC
      FACESPACE US CLICK HERE

    4. Member thelettert's Avatar
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      10-10-2007 05:58 AM #4
      had this same problem, went through everything i mean everythiing. just a bad coil pack. change it and car ran great. same cylinder as you too. 38 bux from the stealership, go change it now.....now...stop reading...go...

    5. Senior Member bluebora20v's Avatar
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      10-10-2007 06:00 AM #5
      Look at the top of the coilpack...they are known to crack causing misfiring. There are a couple threads in the FAQ/DIY regarding the issue and prob several in the archives.

    6. 10-10-2007 08:36 AM #6
      Quote, originally posted by diive4sho »
      make sure the coilpacks are seated not popping up....did you change plugs with same kind that were in there before??

      Only one coilpack on the VRs.

      OP, pop the hood, mist the coilpack with a little water, and have someone stand there and watch it while you give the car some gas. If the coilpack is cracked, you should see some arcing. Easy $5 fix in the DIY involving some J-B Weld.

      Been there, done that, it's cake.


    7. 10-10-2007 10:55 AM #7
      Thanks guys, I check it tonight.

    8. Member NorthernGTI's Avatar
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      10-10-2007 11:41 AM #8
      My buddy had a similar problem on his 12v and he changed the spark plugs and wires and bamm back on the road running f'n mint!!
      Euro Touch Tuning - 647 692 3876
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    9. 10-10-2007 11:45 AM #9
      Quote, originally posted by NorthernGTI »
      My buddy had a similar problem on his 12v and he changed the spark plugs and wires and bamm back on the road running f'n mint!!

      Yeah, I would say that if you don't see any visible sparks from the coilpack, look into the wires. However, if you want to try the cheapest trick first, J-B Weld the coilpack (since that'll only cost you $5 and about an hour of your time), and if the problem doesn't go away then shell out the money for new spark plug wires.


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