LT1-LT4 Modifications 1993-97 Gen II Small Block V8

LT1 Misfire

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Old Jun 2, 2009 | 06:54 AM
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95RamAirNC's Avatar
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Default LT1 Misfire

95 Trans Am, misfires but not all the time it's like most of the time runs ok has a stutter but ive given up on that because its got 180,000 miles.....
Any ideas about the misfire??? I have a new opti spark I will be replacing this coming weekend and new 02 sensors.... Thanks for any tips or help
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Old Jun 2, 2009 | 02:11 PM
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Originally Posted by 95RamAirNC
95 Trans Am, misfires but not all the time it's like most of the time runs ok has a stutter but ive given up on that because its got 180,000 miles.....
Any ideas about the misfire??? I have a new opti spark I will be replacing this coming weekend and new 02 sensors.... Thanks for any tips or help
With that many miles it could be anything. I would install new plugs (NGK TR55's), new wires (MSD 8.5mm), and a new coil (GM replacement) to go with the new opti (hopefully you bought a AC Delco/Delphi opti). I would also perform the ICM cooling mod.
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Old Jun 2, 2009 | 03:06 PM
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yeah i would suspect it is the OPTI mine backfired like that then totally went, buy like ss.slp.ls1 said you should replace the plugs, wires, coil, and opti!
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