Question about 2001 Pontiac Grand Prix
I have a 2001 pontiac grand prix 3.8 QUESTION, could a faulty EGR vavle cause a misfire, or to run rough?
Only if it is leaking, u can check this by touching the valve with wet fingers when the engine is idling, if u hear a sizzle the valve is leaking
Posted on Jul 29, 2010
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Posted on Jan 02, 2017
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