I Have a 2000 Pontiac Grand Prix GT Coupe with the 3.8 and I have just replaced the spark plugs and wires and it still stumbles right at 4000 rpms , I need some advice Thank You
4 Grand in Park, don't you like your engine, it sounds like the rev limiter is kicking in. It is not designed to have high no load engine speeds.
I agree. I researched the subject, and found that the rev limiter is set at 4050 rpm.
The rev limiter is set at 4000 rpm in park for the Grand Prix. Its a safety so then you don't blow you're engine in park.
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