Quote:
Originally Posted by LightlyToasted
Note that the vents will barely blow any air if the system is in auto mode where I suspect that the system is attempting to avoid blowing cold air in your face when it senses not enough heat in the heater core. To check your air flaps you would switch to the manual modes and turn up the fan, which seems to be what you've done.
If the heater valve and aux pump and heater core are working then you'll get warm air in the cabin from whatever vents are working.
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I've tried everything - auto mode, manual mode, AC on, AC off, no dice. Also, when AC is on, it only blows cold air, even though the temp is set to maximum. Interesting, so according to what you said, I guess in the end it could still be the valve.