Question about 2004 Audi A4

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Rough idel/no power

On start up, the car idels verry rough and the check engin light flashes; while driving the car has no power and and runs rough and the check engin light flashes.
I pluged in a scanner and it read "misfire cylender 3", I replaced the plugs, but the same trouble code came up, and the car still ideled/ran rough and the check engin light still flashed and is flashing.
I pulled the plug wires while the car was running, #1 killed the car, #2 did nothing, #3 did nothing, and #4 made the car run worse yet.
Could the problem be a pluged cat? Maybe a pluged fuel filter, or fuel pump? Anny help would be great, I am at a loss.

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  • rockclimbing Jan 25, 2009

    no I didnt, because there electrical type wires, not the commen type plug wires, and from what I can see they run directly into the computer brain.

  • Anonymous Jan 28, 2009

    I had the same problem. It was the ignition coil packs on top of the plugs. I currently pursuing it with Audi to get some money back, as this has been a defect with several earlier models and resulted in a limited recall.

  • Anonymous Mar 21, 2014

    Check engine and power down lights on. Car stays running but loss of power. Scanner does not show codes.

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rough idel/no power - 0475c6f.jpg As a former Audi technician, I can pretty much guarantee the coil packs are your problem.

Posted on Jan 30, 2009

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Did you replace the plug wires also ?

Posted on Jan 25, 2009

  • Jerry Koski
    Jerry Koski Jan 25, 2009

    Havnt worked on many audis but does it have coil packs hooked to the plug wires ? normally the newermodels have coil packs for each cylinder .. sounds like a coil pack to me just an idea. doesnt sound like fuel or plugged cat. plugged cat will let you run only like 30 mph

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It's the timing belt because I had the same problem with my audi as well

Posted on May 15, 2013

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