1995 GMC Jimmy catalytic convertor

1995 GMC JIMMY
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DIZ
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Engine Performance problem
1995 GMC Jimmy 6 cyl Four Wheel Drive Automatic 133k miles

If my catalytic convertor is bad will it make my car run rough?
Nov 1, 2008 at 12:58 PM
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MERLIN2021
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If the 02 sensors are also NG, or the cat is pluged, and exhaust has too much backpressure, yes.
Nov 1, 2008 at 1:24 PM