Question about 1992 Lexus Ls 400
There are several things to check when your car is running hot.
1. Drain, flush and refill the radiator... flush it with alot of water to clean all the build-up out. If the radiator is plugged, it can be "rodded" where they actually open it up and "rotorooter" the tubes inside.
2. Thermostat and housing can be an issue... if it sticks shut, and if the housing is cracked...change it out.
3. Water pump: if the pump is failing, the coolant won't circulate well enough to cool. Tell-tale sign is coolant leaking out of the small drainhole on the housing of the water pump.
4. If the motor is running rough, you may have a blown head gasket allowing the coolant to enter the cylinder. You can check for foamy oil on the oil dipstick too.
So long answer to a short question... the thermostat may solve your issue, but check everything else as well.
Best of success!
Posted on May 02, 2010
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Posted on Jan 02, 2017
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