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2000 grand prix gtp shuttering and loss of power

levi1030

New member
I have a 2000 gtp just replaced plugs wires , thermostat and temp sensor and now its running like crap . starts hard and running rich also after about 15% of throttle it loses power and starts to shutter . anyone else have this problem please help im stumped.. when I stay in the throttle and let it shutter the ses flashes but once I let off and let it run normal it stops
 


sounds like you put the plug wires on wrong, if all this started after the work you just did.

what plugs did you put in?
 


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