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#1
08-18-2003, 07:53 AM
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Only runs rough at 40-50 MPH??
Hi We just helped my son buy his first vehicle a 1994 Grand prix SE. We bought this from my wifes aunt so I know it has been taken care of and all service has been done by a dealer. The only problem the car has is at 40 to 50 mph the car runs really rough but as soon as it is above or below 40 to 50 mph then it is fine. What could be the problem??
Thanks for the help! George Last edited by Gmacjr; 08-19-2003 at 04:10 PM. 
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#3
11-18-2003, 06:43 PM
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Re: Only runs roughat 40-50 MPH??
could be EGR valve
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