Heater Problem
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Junior Member
Joined: Jan 2011
Posts: 2
Heater Problem
I have a 1997 toyota camry. I am having a problem with my heater it does not blow hot air unless i am accelerating then when i let off the throttle it cools right back down. I just replaced the thermostat and it didnt change the problem i can not figure it out? any suggestions?
Super Moderator
Joined: Jan 2008
Posts: 15,178
From: PTW
Could be a few issues:
The heater control valve is not fully open, stuck. This is located in the engine compartment.
The heater core is partially plugged up. If this is the case try flushing the core out with a garden hose via the heater hoses in the engine compartment.
Sometimes the heater duct doors under the dash fail to move properly allowing not enough hot air or too much cold air.
Check the valve, then the core for plugging.
The heater control valve is not fully open, stuck. This is located in the engine compartment.
The heater core is partially plugged up. If this is the case try flushing the core out with a garden hose via the heater hoses in the engine compartment.
Sometimes the heater duct doors under the dash fail to move properly allowing not enough hot air or too much cold air.
Check the valve, then the core for plugging.
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