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Heater does not work

Tiny
SHICKSHEN
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Related to this thread, my 2001 Honda CRV had its radiator replaced a year ago. All fine, and cooling system does what its supposed to do now, but the heater just started only blowing cool air. Any ideas on how to diagnose?
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Wednesday, August 23rd, 2023 AT 11:19 AM
Tiny
KEN L
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Yes, it sounds like an air bubble is stuck in the heater core, I would get the engine warm then park the car on a steep incline (front down) and turn the heater on full blast to help get the bubble out. Also try turning the car around the other way as well. I have seen people use a jack to simulate the slope also.

https://www.2carpros.com/articles/car-heater-not-working

and

https://www.2carpros.com/articles/jack-up-and-lift-your-car-safely

Check the coolant level after the engine has cooled after the procedure to see if the level has dropped. Please go over these guides and get back to us.
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Thursday, August 24th, 2023 AT 10:58 AM

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