Hey guys,

So I searched and came across many threads that are close to the problems I'm having, but I need it confirmed. Today I was driving home from work, and I'm in stop and go traffic and notice my Engine temp gauge all the way to H! I hear the fan on as well, so I know thats working. I turn my heat on to full, and i'm getting cold air instead of the expected hot air. I quickly pull over and turn the engine off. I open my hood, and to my surprise my engine is very cool. Nothing seamed to be leaking either. By the way, the outside temp is around 30 degrees F. So I turn my car back on and the needle is in the middle again. I begin to drive. In a matter of a few seconds, I hear my fan turn on indicating the engine is starting to overheat and sure enough the needle begins to rise slowly. I keep the revs down hoping to prevent it from going to H. Traffic begins to pick up and I'm moving at 45mph, and all of a sudden my engine temp goes right back to normal. I pick up speed and go to about 60mph, and still its fine. Than I start slowing down again, and the engine temp rises to near H again at slow speeds.

Is this for sure the thermostat? If so, is there a how-to on replacing it? Also, lets say it is the thermostat... is my engine really in danger of overheating just cause the gauge says its at H? Even though the engine appeared cold when I pulled over? Thanks guys.

 

sensor

 

Moved

 

What sensor do you speak of? And can I replace it easily? Any DIY? Can you link me to the part?

 

overheat can be caused by a lot of things. check this video out.

http://www.youtube.com/watch?v=evpaT...lwWqjeV10oWh_7

 

the water temp sensor is in the rear water pipe in the back of the motor. They are cheap to replace (<20$) so start there as that seems likely cause if the motor wasnt really overheating.

Thermostats are cheap as well so I'd replace that in unison. overheating motor can wipe your block.

 

So i drove around today and the car was fine. I also plugged in my OBD2 reader and synced it to my phone for over an hour of driving. The temp sensor was accurately reading the entire time, so I don't think its the coolant sensor. It was steady between 84-91 degrees celcius all day. Outside temperature is 35 degrees F. Is it possible that the thermostat got stuck just yesterday?

 

possibly, but you dont want to chance it over such a cheap and simple to replace part.