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Heater knob

5095 Views 2 Replies 3 Participants Last post by  MartyG007
I tried turning on my heat temp non the one that controls cool and hot but when I put it on heat no hot air is coming out of vents it's been making a running motor sound when just the ignition is turned on and when turning off anyone have a problem like this now or before
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Sounds like the heater control valve on the firewall. I had to have mine replaced last year.
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