Heater blowing Cool Air


Old 10-27-15, 01:23 AM
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Heater blowing Cool Air

Nissan Titan 2011 blowing cool air when heat turned on. Rad fluid checked and no issue.

Is it a thermostat; a heat core flush needed; the electronic valve; thermostat stuck open?
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Old 10-27-15, 01:33 AM
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Welcome to the forums.

Check the two rubber lines going to the heater core. They should both be hot.

You may have a problem in the hot/cold blend door system.

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