engine sputters at high rpm

1997 PONTIAC GRAND PRIX
75,000 MILES • 6 CYL • FWD • AUTOMATIC
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MAYNARDMAN
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  • 9 POSTS
1997 pontiac grand prix gtp...engine wont rev beyond 3500-4000 rpms...starts to sputter....no check engine light.car runs fine from idle to 3500 then it acts almost like it has a governor on it.looses rpms back down to 3000...stabilizes then builds back to the 3500 mark.have not replaced any parts yet.

thanks for any help
A.J.
Mar 14, 2011 at 9:14 AM
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BDOG53
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  • 2 POSTS
Mine is a 1999 grand prix with a non turbo 3.8. It idels perfect, but when I revi up to 4000 rpm it stumbles and surges. No codes and we replaced the plugs and wires thinking one of them was breaking down. Onward we go.
Sep 30, 2011 at 8:28 PM
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