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BAD Misfire driving me crazy!!!

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Old 06-09-2011, 11:14 AM
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Car: 1986 IROC-Z
Engine: 305 TPI
Transmission: 700r4
BAD Misfire driving me crazy!!!

My car has had a pretty bad misfire for a while now. Ive done a full tune up on it, ALL new filters, even fuel, plugs, wires, cap, rotor. It runs ok at higher rpms with a smaller miss but wont idle for anything. somedays it runs decent most it runs horrible....

No check engine light, should i check any sensors? maybe the new plug wires are already bad? after the inital tune up it ran great for about a week...
Old 06-09-2011, 12:48 PM
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Re: BAD Misfire driving me crazy!!!

check timming and probably your iac valve is bad or the housing got build up of residues,also clean the maf
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