A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

My car is running!!

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Old Jun 19, 2007 | 02:37 PM
  #1  
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Default My car is running!!

Ready for this...the screw on the firewall holding the groundwires came loose and the wires weren't touching...that's why no spark. I do however have a misfire code for #1,2,&3 now. If all 3 are misfiring, any idea what it may be? I read something about O2sensors. Car runs fine to me, but it's always had a shake when it idles? Any thoughts?
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Old Jun 19, 2007 | 02:42 PM
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Default Does it feel like it's misfiring? Maybe those codes are just left over from before.

Clear them and see if/when they come back.
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Old Jun 19, 2007 | 02:45 PM
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Default They wouldn't clear, doesn't feel like it's misfiring

had a few people drive it. It just idles rough.
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Old Jun 19, 2007 | 02:46 PM
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plugs done recently? Coil packs?
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Old Jun 19, 2007 | 02:48 PM
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Plugs were done 10,000miles ago, I've never done coils
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Old Jun 19, 2007 | 02:51 PM
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Default try swapping the coil packs around and see if the misfires change cylinders

Also, you can log your O2 readings and see if they're reasonable or not...
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Old Jun 19, 2007 | 02:54 PM
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Default Are 1,2,&3 on the front of the engine? Got a shock from one wire

Could this have anything to do w/it?
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Old Jun 19, 2007 | 02:55 PM
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coil packs on a 2.8 cannot be swapped, because it is a "coil pack", a pack of ignition coils
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Old Jun 19, 2007 | 02:57 PM
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1,2,3 are the passenger side of the engine. What wire shocked you? a spark plug wire?
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Old Jun 19, 2007 | 03:01 PM
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Default On the front of the engine is my coil pack w/3 coils(together)

the wires that go on them...one of them did it.
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