Question about 1992 Lexus Es 300
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 will not get to the heater core. It could also be the thermostat not opening.
Posted on Jan 20, 2009
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Posted on Jan 02, 2017
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