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

Misses when warm

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Old 03-14-2016, 07:13 PM
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Default Misses when warm

So last year I had an issue where my car would die after 20 min of driving. Let it sit for a bit and it would be fine for another 20 min of driving. No high or low res code, so I put a msd opti in it. That fixed the stall issue, but now it misses after it gets warm. So I then put new plugs and wires, ICM, coil, and maf sensor in. Still has the miss, summit sent me another msd opti, installed that and still misses when warm. Please help!
Old 03-15-2016, 06:28 AM
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I'd start by verifying fuel pressure
Old 04-21-2016, 10:30 AM
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Fuel pressure is good. Also replaced Idle air control valve, o2 sensors are new as well.
Old 04-21-2016, 10:32 AM
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Originally Posted by Brian100
Fuel pressure is good. Also replaced Idle air control valve, o2 sensors are new as well.
do you have a new fuel pump?
Old 04-21-2016, 03:09 PM
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Yes, new walbro with new injectors.



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