Hey, I haven't had to worry about overheating. My highest temp has been 150 Well, my assumption is a thermo stuck open. Well that is better than stuck closed. I ordered my 180 thermostat from bputah and it arrived yesterday. Going to put it in this weekend.

 

Interesting that it is stuck open, there is a sensor that is supposed to detect that and throw a code....

 

I have lots of codes, Mike's been helping some with that. Don't remember that one being quoted but could be. Temps from ultra guage so I am supposing it is accurate.

 

Code P0126, but conditions have to be just right for it. Page 320-322 of shop manual.