so i just got my evo but im having a problem with the temp sensor. after i drive it for a while at random times it starts overheating ( it goes above the middle) but it goes back down . and its not only doing that when i push it either and also when i turn on the heater it cools down really fast. so my theory is that the thermostat is messed up. because the radiator and coolent is fine and the engine doesnt seem like its overheating. what do u guys think?

 

+1 on the thermostat

 

Every person who owns an Evo or any car with a cast iron block/aluminum head combination should have a spare thermostat sitting on the shelf in the garage. All you have to do is overheat once and the head warps. So, anytime the heat gauge is reading anything but normal swap out the thermostat. If it is not the thermostat you have wasted the price of a thermostat. If it is you've just saved yourself pulling the head.

 

shiet^^ when i see my temperature raising anything over normal i shut my car off imidiately....happend to me twice when i blew 2 hoses....seen the temperature raising i shut the car off fast and pulled over....

 

yeah sounds like a thermostat to me

 

thanks guys, yea imma switch it out and seeee

 

cool let us no if it works

 

what was the issue?

 

thanks for the info guess, i switched out the thermostat and it worked! while i was switching it out i noticed that the one in there was aftermarket. ( it was a lot bigger then the oem one.) but its working now so thanks guys