heater won't blow warm air.


Asked by fneumann Jan 22, 2010 at 11:18 AM about the 1985 Toyota Celica GT coupe

Question type: Maintenance & Repair

The car heater doesn't blow hot air. Sometime it will but most of the time it won't, engine is hot, heater hoses are hot, fan is blowing, air is cold. I live in alaska,  Only 45,000 miles on this little car. But I need some heat.

2 Answers


It's a bad discharge temp sensor, so the computer doesn't know what the heater is putting out. Sensor has failed reading a high discharge temp so it won't open the heating valve. So my cheap fix was to diconnect the heating valve linkage and control it by hand, I have it set about mid-way and it's about right, If I get warm I roll down the window a little. I live in Ak. so I need heat most of the winter. It works for me up here. Poor people have there poor ways of repairing things.

4 out of 4 people think this is helpful.

where is the heating valve linkage at in the car

8 out of 8 people think this is helpful.

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