V6 Tech 1967-2002 V6 Engine Related

1993 z28 backfiring after warming up

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Old Apr 26, 2012 | 12:03 PM
  #1  
richeydan's Avatar
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1993 z28 backfiring after warming up

I just bought a 1993 indy pace car, it ran great for a couple of weeks. It is now after coming up to temp. is running really rough and backfiring. After it cools down it it is ok again. There are no service eng soon lights on.
Thanks for your help Dan
Old Apr 26, 2012 | 01:47 PM
  #2  
chevys89's Avatar
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From: Buckner,Missouri
Re: 1993 z28 backfiring after warming up

it might the coils packs or the o2 sensors
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