1994 PONTIAC GRAND PRIX
140,000 MILES
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SPARKY97
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  • 1 POST
rough idle, during acceleration it misses and chuggs, changed fuel filter, plugs, wires, and now coil packs, still same issue. wont rev over 4k in park...3.1 v6
Mar 18, 2013 at 5:50 PM
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HMAC300
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  • 48,601 POSTS
scan for codes and check fuelpressure first. shold be 41-47 psi fuel pressure.
Mar 18, 2013 at 6:59 PM