Does anyone know how to flush the heater core of my 2001 GS300? Is it very difficult? I am comfortable with the basics (flushing most fluids, and general maint.), just never had to flush a heater core before.

Any suggestions, or links to shop manuals (or other docs) is greatly appreciated!!

 

Anyone? Heater Core? Flush?

Any help is much appreciated.

P.S. If someone know's how to test a Air Mix Servo Motor (Passenger side) to see if it is why I am not getting heat on the passenger side (only), that info would help too.

Thanks,

 

I'd say tat your best bet would be to flush your whole system. I'm not sure how you would just flush the heater core. What I did was drain out all the coolent. With the drain still open I started my car and turned my heater on 80. I contnuesly refilled my redatior with water until all that was comming out the drain was water. Then I closed the drain and put some redatior flush in with the water and drove my car around for two days with the heater on. Then I drained out all the water,closed the drain and started my car and poured in antifreeze. hope that helps