kelvin13

Run my lexus around in traffic or up hills the temp gauge goes into the red

leave it running in the driveway it overheats and yes the fans work using the a/c so i know its not the fan motors the wires from both the fans go into a fan computer in the middle of the fans near the top of the radiator.....searched all over for a fan temp switch does it have one?????

thomas1

Maybe you have a stuck close thermostat. Fans are not coming on when it overheats without air?

neelnaik

Welcome to Club Lexus kelvin13!
I also think that the problem you are having seems to be a thermostat that is stuck closed.

kelvin13

thanks guys i will try that

kelvin13

do they have a temp switch for the fans? i cant locate it on the radiator is it in elsewhere?

Carver

By temp switch do you mean thermostat? If so, try searching fan thermostat as these have failed and been discussed here.