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i had my car running for about 15 minutes parked with ac on fan was also on but the temp got up to 252 degrees never happened before.would like to know if its the thermostat or temp sensor or evev the radiator csp
If your car is truly a 2006, your car is a C6 and you posted in the C5 section.
Have you confirmed your fans are running? Look closely you may have something like a bag stuck in the fan. I had that happen once. It was a black plastic bag and was very hard to see. On a cool engine, reach down and give the fans a spin.