when i turn heat on no heat just cold air
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1997 Ford Explorer Question: heater blows cold air
Answer #1DaveJHM December 11, 2010, 01:45Master
There are multiple reasons you could be getting no heat. First, the engine may not be getting warm enough fast enough. This could be from a faulty thermostat - sticking open. Second, the heater core may not have flow. You might have a hot hose going in, but a cold one coming out. This could be from a restriction. Third, you may have a temperature blend door motor in the dash failed.
Testing is in order to determine your failure. Good luck!
ReplyVisitor, January 22, 2011, 12:44
Where is the blend door motor located
ReplyDaveJHM, January 23, 2011, 01:09Master
Behind the dash, on the heater plenum assembly itself. The dash must be removed to have access to it.