Blakeg1991

I have a 96 Lexus es 300. It sat for 6 months before I got it. I changed all the fluids and it ran great. But I started to notice a over heating problem. When I was driving it was fine it stayed at temp. When I would stop for to long the temp would begin to over heat. I just replace the thermostat and it still happening. I noticed when the fan kicks on its making a noise it also doesn't seem to be running as fast as it should. Help please.

BDSL

Maybe your fan is faulty. Or maybe your radiator is no good. Or maybe you have air in the line.

mdbrown

Pop the hood and start up the car. Wait for the fan to come on and see if it's running at proper speed and make sure the shroud is on. If that's all good next thing would be to get an infrared thermometer and look for cool spots in the radiator as that would indicate blockage. You aren't getting enough air flow or possibly enough coolant movement, it could be the waterpump but I'd check these other things first.

Blakeg1991

I bleed the entire system and I checked the radiator it is good. My fan kicks on I just not sure it is moving fast enough.

Blakeg1991

Water pump is good as well

mdbrown

The fan would be the best guess at this point since you have no issue while driving. You can put your hand down behind the fan when it's running, it should be moving a lot of air. What kind of noise is it making?