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    Thread: Random/Multiple Cylinder Misfire Detected ???

    1. 06-13-2005 12:33 PM #1
      So I ran Vag-Com on my '02 Jetta 1.8T. Got these 3 codes:
      Random/Multiple Cylinder Misfire Detected
      Cyl.1 Misfire Detected
      Cyl.2 Misfire Detected
      Brought it to the dealer and they replaced the ignition wiring.
      Did a 200km trip and vag-com'ed my car. Same codes appeared! Well I thought maybe the dealer forgot to erase the codes. So I erased them.
      Came back from my trip, another 200km, vag-com'ed my car and still those 3 codes re-appear!!!
      Any help on what it can be?

    2. 06-13-2005 01:16 PM #2
      Quote, originally posted by vw4life99 »
      Any help on what it can be?

      Yeah, it's caused because you have a VW. lol I used toget CEL's all time when I was stock for misfires. The more I modded, the less it happened.

    3. Member nidex's Avatar
      Join Date
      Oct 24th, 2004
      06-13-2005 01:20 PM #3
      I threw those codes after I made a vaccum leak off of my intake manifold. Don't know why it threw those codes, but it did. Just something you might want to look into.
      Also, ever looked into coil packs?
      Past VWs: MK4 Platinum Gray GLI, T3/T4 57trim & B5 Cactus Green A4, mostly stock.
      Other cars: '95 Volvo 850; '92, '94, '99 Accord; '91, '96 & '96 Integra (intake, 75 wet shot); '93 & '94 Civic; a couple Garbage Mashers (GMs), and a bunch I forgot. I'll rock anything I can buy broken or on the low (or both).

    4. 06-13-2005 01:27 PM #4
      Well I bought my Jetta in December, asked VW if any recalls needed to be done, since I knew that there had been a recall for the coilpack.
      They said all the recalls were done on it. So I'm assuming I have the newer and more reliable coilpack

    5. 06-13-2005 01:28 PM #5
      Assumption + VW = BAD BAD. Check the last letter of the part number on the coils if you want to know for sure. I believe L is the current version.

    6. 06-13-2005 03:34 PM #6
      every time i run the vag-com i get the same codes

    7. 06-13-2005 03:36 PM #7
      Whay is your full VagCom readout? Check your software coding level. It should be G 0008 or later. This was a Dealer update that was mostly ignored,but addressed exactly the misfire issues.
      Dick Shine

    8. 06-13-2005 04:18 PM #8
      All I know is I have Release 311.2-N.
      Where do I see the software coding level?

    9. 06-13-2005 06:43 PM #9
      Just print out everything it says when you select engine. Print the whole screen,not just the codes. It will list your ECU# and a lot of useful info.
      Dick Shine

    10. 06-13-2005 06:44 PM #10
      PS Upgrade your VagCom software! You wont regret it.
      Dick Shine

    11. 06-13-2005 09:57 PM #11
      I have multiple misfires in 1 and 4 and the dealer says "its your performance chip" Whatever..

    12. 06-14-2005 10:05 AM #12
      Alright, I'll print everything out and post it here.
      What's version of the software are they at right now?

    13. 06-14-2005 11:42 AM #13
      I think 0008 is the newest for a stick if it is a 02 I need the ECU# to be sure
      Dick Shine
      PS if you upgrade to GIAC you automatically get the update
      Cant speak for other chip tuners

    14. 06-14-2005 12:07 PM #14
      get yourself a set of these coils.......used to have random missfires and since installing these have not had ONE!

    15. 06-14-2005 12:22 PM #15
      I've had random misfires since the car was new. 110,000kms later, various stages of mods and maintenance.....still getting random misfires. It's just an inherent problem with this system, and doesn't seem to be anything one can do about it.

    16. Member 20thAEguy's Avatar
      Join Date
      Nov 21st, 2003
      95 GTI VRT
      06-14-2005 05:08 PM #16
      mine seemed to start doing this after I put a PSSSHH valve on to test out, allthough I cant imagine a DV or BOV can cause engine misfires????

    17. 06-14-2005 07:55 PM #17
      Of course a BOV can cause a lite! You have dumped some intake to atmosphere and the MAF cant find it.
      Dick Shine

    18. Member 20thAEguy's Avatar
      Join Date
      Nov 21st, 2003
      95 GTI VRT
      06-14-2005 09:07 PM #18
      no light, misfire codes

    19. 06-15-2005 09:46 AM #19
      So here's the complete report from the Vag-Com:
      VAG-COM Version: Release 311.2-N
      Control Module Part Number: 06A 906 032 HS
      Component and/or Version: 1.8L R4/5VT G 0008
      Software Coding: 07500
      Work Shop Code: WSC 00066
      Additional Info:
      3 Faults Found:
      16684 - Random/Multiple Cylinder Misfire Detected
      P0300 - 35-10 - - - Intermittent
      16685 - Cylinder 1 Misfire Detected
      P0301 - 35-10 - - - Intermittent
      16686 - Cylinder 2 Misfire Detected
      P0302 - 35-10 - - - Intermittent

      So I guess I have the G 0008 software.

    20. 06-15-2005 03:36 PM #20
      so if the coilpack would be the good one, what else could it be?

    21. 06-15-2005 05:59 PM #21
      your maf could have gone to hell

    22. 06-16-2005 10:16 AM #22
      but if my MAF would of gone to hell, wouldn't my check engine light be on?
      cause my light has never turned on. but when I scan it, I get those codes

    23. 06-17-2005 10:14 AM #23
      any one else have any idea?

    24. 06-21-2005 10:34 AM #24
      any more feedback on these misfires?

    25. 06-21-2005 03:00 PM #25
      have you looked at the wiring harness that runs to the coilpacks? Some of the rubber coating on them is most likely cracked, exposing bare wire. Your wires might be grounding out to the valve cover, or each other....

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