i was driving around today and my truck was running at 210*. i didn't think it was bad. so i keep driving. i stoped at a red light and looked down 257*so i pulled in a parking lot and shut it off. let it cool down to about 180* and drove home. i put a LS1 fan and 160* stat on it about a month ago. so WTF happened

 

and it was 85 today the hotest this year.

 

Were your fans running when it was this hot?

 

maybe its your t-stat..... i ran my truck for a week without neither the cluctch fan or the electric fans and i never had a overheating problem in 80 degree weather

 

Electric fans not working would be first thought.

 

e-fans are air pocket make sure the little hose on the right top side of the rad. is not clogged. that will do it all the time

 

the fan didn't run when it was overheating,how can i check to make sure it is working fine

 

the fan works, i put A/C on and the fan kicked on. i also took it for a ride and itdid not go over 180*. but when i stop about 30mins later and let the truck run it went to 210* within 2 mins. so would that be the t-stat

 

Why do you need to check? You just said it wasn't running.


That's good, at least you know that circuit is working. You need to get the temp circuit working.

 

could it be the water pump