Question about 2002 Pontiac Grand Prix
My car doesnt go over 40mph ive changed the fuel filter spark plugs and wires and the MAF what next. The car runs better when I unplug the MAF and the check engine light doesnt come on. HELP
It was the Cat. Converter on mine, Don't drive it like that too long as it will send exhaust back through the EGR Valve and burn a hole in the Intake Plenum....
Posted on Jan 31, 2009
I just had the same problem. Check the catalytic converter. It took me forever to get over 30 or 40. Drove everyone in the road nuts. They initially thought it was the transmission. Not so, clogged catalytic converter. I got it tuned up and the engine runs fine. Wish I could sasy that about everything else on this lemon!
Posted on Sep 02, 2008
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Posted on Jan 02, 2017
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