2006 Pontiac Grand Prix coolant temperature

2006 PONTIAC GRAND PRIX
78,000 MILES • 6 CYL • FWD • AUTOMATIC
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BEANSDAD
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On highway the coolant temperature seems fine with or without A/C on. But after that when I get off the highway onto the side streets around my house the coolant temperature gos up. More so with A/C off. Bought car with 20000 miles and never done this before. I have flushed the coolant system, replaced thermostat, water pump and coolant temp sensor.
Jun 16, 2010 at 8:33 PM
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