Question about 1999 Volkswagen Passat

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I have a p0303 trouble code on my 1999 Passat. Missfire on #3 cylinder. Coil is ok, I'm lost.

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Coil packs very prone to failing... check compression for good readings (at least 100 - 120psi) if okay try new spark plug as these can fail under load and its the cheapest part to replace to eliminate. if misfire still present swap cylinder 3 coil with cylinder 1 coil and see if fault code moves to cylinder 1. hope this advice helps

Posted on Jul 17, 2010

  • rzahn2003 Feb 25, 2011

    So... I have done all of that at it still persists. What next? Wires and they go where?

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