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Random/Multiple Cylinder Misfire Detected
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08-05-2007, 09:39 PM
HUMTECH
Hummer Authority
Join Date: Sep 2003
Location: Canada
Posts: 1,251
Re: Random/Multiple Cylinder Misfire Detected
Likely have A restricted cat converter. Check backpressure of both if either is over 1 psi of backpressure that will cause random missfires on that bank.
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