Quote Originally Posted by timsrv View Post
Replacing the thermostat is a good 1st step when chasing cooling issues. It's a moving part & one of the most likely to fail. It's also cheap and fairly easy to change. It may not solve the problem but if nothing else you can rule it out and feel confident with it for at least a few more years.

Were you running AC when this happened?
No, the A/C was off. The dealership said the Tmstat will get here this afternoon. I've been driving around today, but then again the temp is a lot cooler today 'cause it's cloudy.

I'll keep you posted. I'm planning of flushing the raditor really good, putting that new tstat on and filling it up with coolant vie water.

Thanks!