zophar
New member
i will keep that in mind., the next project after finding and fixing this problem is the prospect of a centrifugal supercharger.
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1997 firebird 3800 high rpm stumble
- Thread starter zophar
- Start date
I have a 99 3.8 Camaro and have the exact same problem! Its been frustrating me for a while now. I've ruled out plugs, ICM, coils, wires. I tested fuel pressure and seems a bit low (42psi idle) but not 100% sure it could be that, don't just want to run out and get a new pump without knowing.
I've been logging several rides with OBDII and nothing really stands out. When the problem happen the computer logs a few misfires on all cylinders but not many, <5 instantaneous misfires.
I do have a relatively new but generic CAT that I installed 2-3 years ago. Might be worth taking it off and seeing, should be too hard cause its held on with clamps, not welded.
I've been logging several rides with OBDII and nothing really stands out. When the problem happen the computer logs a few misfires on all cylinders but not many, <5 instantaneous misfires.
I do have a relatively new but generic CAT that I installed 2-3 years ago. Might be worth taking it off and seeing, should be too hard cause its held on with clamps, not welded.
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