Questions & Answers for: Lexus heater blows cold air

Heater blows cold air I have a 1992 Lexus SC300 with the heater blowing cold air. I have changed the thermostat and that didn't work. The engine does not overheat. Last spring, the heater would blow ...

cold could a heater control valve cause the heater to blow cold air . Yes it could. some are vacuum powered, cable powered (mechanically) or electric powered. If the valve does not open. The hot water

...heater only blows cold air When the auto heater is set at any temperature for heat it only blows cold air hi, this is simply a sensor that has gone bad. your dealer will be able to correct this

cold. Can anyone tell me what would cause this. Thanks Ron Yeah Ron, the flap that covers the heater core is open and when you're moving the air is pushed over the heater core and into the cab your in

...HEATER VALVE IS BAD HELP. blows hot air all the time even with the ac on???? with the temp gauge on cold??? yes. need to replace your heater control valve, check e-bay for a great price. you may also ...

...heater will not blow warm air, no matter where the temp is set. It blows air, all right, but it's cold as can be. It has coolant, and the engine temps are running normal. Any suggestions? heater ...

heater blows cold 91 lexus ls400 the heater blows cold air. Will blow warm air after 20 to 30 minutes of driving and only at speeds of 50mph Sounds like a thermostat problem replace it

...heater will not heat just blows cold air you may be low on coolant, if not a common tell tale sign of a faulty thermostat is the car staying on the cold indictaor for a very long period of time ...

ac blowing hot air 99 gs 300 lexus heater is blowing cold air it must of had work done on the heater because the control valve is hooked up backwards

Lexus 1993 Sc 400 heater blows cold air when cold outside. But heat comes out when warm outside. Any ideas? wild guess wire crossed between airconditioning switch and heater switch.