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Why would the heater switch not change off of defrost position on a 2000 S10?
Wiki User
∙ 12y ago
You have a vacuum line disconnected probably under the hood. The HVAC controls are operated by vacuum and when there is no vacuum it system goes into defrost mode.
Wiki User
∙ 12y ago
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Why would a 95 Ford Explorer AC cyle on and off when the switch is in defrost or heater position?
On my 1995 Ford Explorer when the defrost position is selected , and the temperature knob is set in the red area to get heated air to defrost the windshield , the A/C compressor will cycle on and off to help dehumidify the air, but the compressor ONLY cycles on and off in the DEFROST POSITION ( sorry if I'm misinterpretting your question )
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Heater switch turns on heat in all positions but defrost turns on air conditioner and wont shut off until switched to different position 2002 cavalier?
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What could cause a heater to not function properly in a 1997 Grand Prix?
not function how. No heat, not enough, no fan doesnt' change heat to defrost? All different answers. No heat, not enough, May just be low on coolant. Therostat stuck open. No fan, fuse, ground, switch. Doesn't change heat/defrost? Cable, control, some switches are vacumn operated.
Why does the heat come out at the windhield when I switch the dial to come out at the floor in my 2004 blazer?
could be a vacuum leak could be bad selector switch defrost is the default position for this systen
