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misfiring under load

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Old 08-13-2009, 06:58 PM
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Default misfiring under load
I have an 04 A4 1.8 I just ran into a problem that feels like misfiring. It only occurs under a heavy load while i have my chip on. The CEL will flash for approx 15 sec then go out. If i misfire a few more times it will flash then stay on for a few days then go away. i turned my chip off so i dont mess anything up and it runs just fine under any load, throughout the RPM range etc..... im so confused. i need some help here thanks

FYI i changed the spark plugs and got a new DV to try and solve this and neither worked.
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Old 08-20-2009, 01:56 PM
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Just had that same issue last week.....It was a blown coilpack. Chack that out.
Codes p0300 p0301 p0302 p0303 p0304. Good luck man.
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Old 08-22-2009, 11:04 PM
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coil pack
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Old 08-23-2009, 04:59 PM
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could also be plug gap
Last edited by bnr32_coupe; 01-02-2012 at 03:57 PM.
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Old 08-25-2009, 05:39 AM
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COILS!
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