Question about 2000 Pontiac Grand Am GT
Grandam gt ramair v-6
When the car is in its failure mode, have someone man the accelerator and listen at the tailpipe.
Have the helper gradually raise engine RPMs and see if the normal muffled sound of combustion turns into more of a hiss.
If the catalytic convertor has failed, it may have lost chunks of ceramics that are clogging the rest of the exhaust system.
Posted on Jan 26, 2009
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Posted on Jan 02, 2017
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