Mechanics

CHEVROLET IMPALA THERMOSTAT PROBLEM

2004 Chevrolet Impala • 152 miles

I have 2 codes one is a random missfire and the other is coolant temp is below thermostat regulating temp I was wondering what an cause these problems and how do.I fix them
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Nfpkids
December 23, 2012.



The P0128 is most likely a bad thermostat the random miss fire could be plugs wires dirty injectors etc.

Saturntech9
Dec 23, 2012.