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Thread: 2003 passat wagon 2.8l v6 with p0421 and p0431...a slight miss as well...help!

  1. 05-27-2012 05:33 PM #1
    Okay guys here we go. For those wanting me to search...I did...lots of old posts but nothing recent...here we go...

    Cold start up is fine and initial driving. After car warms, there is a slight shutter at idle (just occasionally) and upon acceleration with low rpms. (It really feels like a miss) Went to AutoZone and came back with the codes above. I thought it might need a new coil but now I am not really sure. I want my performance back but SERIOUSLY doubt cats are bad at the same time. Where should I begin by search for solution....least $ first!

    I appreciate any thought those of you with more experience with this engine may have...thanks!

  2. 10-18-2012 11:21 PM #2
    Quote Originally Posted by tbuford View Post
    Okay guys here we go. For those wanting me to search...I did...lots of old posts but nothing recent...here we go...

    Cold start up is fine and initial driving. After car warms, there is a slight shutter at idle (just occasionally) and upon acceleration with low rpms. (It really feels like a miss) Went to AutoZone and came back with the codes above. I thought it might need a new coil but now I am not really sure. I want my performance back but SERIOUSLY doubt cats are bad at the same time. Where should I begin by search for solution....least $ first!

    I appreciate any thought those of you with more experience with this engine may have...thanks!
    Well....the codes are back....this was posted a few months back with no replies....can anyone help out with their "hands on" experience? Thanks


  3. 10-19-2012 06:18 AM #4
    thks....will start there..

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