Question about 2000 Pontiac Grand Prix
Do you have a check engine light? If you do, I would bet that you have a clogged cat converter. One way to be sure is to unhook cat and drive the car to see if the power improves. will be loud, but you will know if that is the issue or not. the shop will charge you at least an hour Diagnostics time to do the same thing.
Posted on Jul 21, 2010
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Posted on Jan 02, 2017
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