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

misfiring when warm only?

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Old 04-20-2008, 12:14 AM
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Staging Lane
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Default misfiring when warm only?

my car right now runs awesome when its cold but misses when warm..not really at WOT when the rpms are up...but its bad at WOT at low rpm...what could be causing this? the coil maybe?
Old 04-20-2008, 12:23 AM
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I've expirienced high rpm stumbles at wot and it was the coil. I was able to clean the male conector on the coil, and clean and close in the gap on the plug wire and fixed the problem for a summer. But in the fall I bought a new coil wire. Die electric grease it up!
Old 04-20-2008, 07:45 PM
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Bad plug wires caused mine to act just like yours.
Old 04-20-2008, 08:02 PM
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My water pump hose was leaking on the opti after it warmed up, caused a situation of missfire/stumbling only after it warmed up.



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