2000 Celica GT Heating problem - Toyota Nation Forum : Toyota Car and Truck Forums

Overgloc · 12-13-2010, 12:33 AM

Needing some help figuring out what wrong with my wife car. When you turn the heat on in the car and let it idle it will not get hot, but when driving and have the RPM around 3k or higher the heat work! but the when stoping at red light the heat will get cold again untill reving the engine to warm it back up. What going on? Heater core? TIA for your help.

Bitter · 12-13-2010, 07:23 AM

got coolant? ever changed the thermostat?

Overgloc · 12-13-2010, 08:59 AM

Got coolant temorstat have not been change since we the car in 2000. Ya think it's the thermostat? Thanks again

RobMilkshakes · 12-13-2010, 03:45 PM

If the engine doesn't stay at temperature, I would recommend replacing the thermostat and then working from there.

Overgloc · 12-13-2010, 06:16 PM

Temp is working it's about in the middle of the gauge. I get heat when I give it gas but as soon as I let go it's get cold again.

Bitter · 12-13-2010, 07:24 PM

change the thermostat and go from there.

catric69 · 12-14-2010, 11:42 AM

Don't spend your money just yet. Burp/bleed the cooling system for air pockets. That may solve your problem.

Overgloc · 12-24-2010, 03:25 PM

Well just got around to changing out the thermostat and still no heat. Burp/bleed the ac unit? Any other suggestion? Thanks for all the tips guys.

RobMilkshakes · 12-24-2010, 04:46 PM

burp the coolant system. There are, I believe, a few good guides for this on newcelica.org

catric69 · 12-31-2010, 06:51 AM

There was no mention of A/C anywhere. Download both volume of the "Celica shop manuals" here". http://www.newcelica.org/other/technical/index.htm