2007 Pontiac supercharged 3.8 reduced engine power

Asked by Roark84 Jun 13, 2020 at 09:01 PM about the 2007 Pontiac Grand Prix GT

Question type: Maintenance & Repair

Changed water pump and after putting it together
car will start but runs like crap then traction
control comes on then reduced engine power and
stalls out ran fine before

1 Answer
19,495

Jason answered 4 years ago

have the engine diagnostic codes read for more info. wires could be wet and arcing (just a guess). if idle is rough there could be a misfire.

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