How to replace radiator for Lexus IS300 2002 ?

The air con fan comes on when the air con is engaged, the engine fan comes on only when the engine reaches operation temp. controlled by a temp. switch. on the block or radiator .

ok check your radiator fan if it a clutch fan change it

Hi, Most of the time you can follow the UPPER radiator hose to the engine and there will be the thermostat housing. On Reverse Flow cooling systems you follow the LOWER radiator hose. All the thermostat does is trap coolant in the engine until it reaches a certain temperature, then opens to the radiator to be cooled. Don't forget to bleed the air from the highest place in the cooling system. Sometimes that's the reservoir, but look for a small plug high on engine. Good luck

Just follow the upper radiator to the engine, the thermostat is under the cover that the upper radiator hose attaches to on the engine. Make sure to bleed the air out of the system after draining it to replace T Stat or the engine will overheat and damage a head gasket..

I believe your lexus has more than one fan, there is one at the water pump and I think 2 or 4 electric fans in front of the radiator, If it has been determined that the water pump bearing is bad it is a really good idea to fix it or you might be replacing a radiator and shroud, it will hit both if the fan goes out.

YES!! if the cap is faulty the coolant boils out and wham! the coolant boils and air-locks the water pump.

Does you vehicle have a hydraulic cooling fan on the radiator? The hydraulic fan system is ran by the power steering. The fluid level for the power steering is full?

Yes, a non-certified person could replace something on the car. The person has to understand what he/she's doing, though.
Best way: open the radiator cap and drain the coolant. Leave the radiator cap off until done.
Place a container under the radiator to catch the coolant.
Replace the thermostat, and refill the radiator.

Reference to Lexus getting hot after engin run for a short time: Replace the sensor behind the engin radiator cap on engin.

Not too complicated, removing the fans is the hardest part. Try an aftermarket site like rockauto.com.