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#1
08-10-2009, 07:46 PM
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02 grand prix gt wont go over 3500-3600 rpm
02 grand prix gt 3.8 engine will not go over 3500-3600 rpm. barely gets out of first gear will not get out of second max speed 45-48 mph. passing gear will not engage. changed fuel filter. checked converter with temp gun. temp close front and back. any ideas? no codes or lights on dash.
Last edited by timmmm; 08-10-2009 at 07:50 PM. Reason: forgot something 
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#2
08-10-2009, 10:43 PM
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Re: 02 grand prix gt wont go over 3500-3600 rpm
Clogged cat would be the most common reason for this problem. Remove & replace the cat, or install a cat delete (bypass) & see how the engine runs!
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Knowledge can be communicated, but not wisdom!   
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#3
08-11-2009, 07:42 AM
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Re: 02 grand prix gt wont go over 3500-3600 rpm
How many miles are on this GP? See the link below located at our Tips & Maintenance subforum if you have under 120K miles and since it is a '01-'02 model. The GM dealership may cover the diagnostics and replacement of the CAT for free.
http://www.automotiveforums.com/vbul...d.php?t=681283 And welcome to AF.
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#4
08-14-2009, 07:25 PM
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Re: 02 grand prix gt wont go over 3500-3600 rpm
Quote:
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