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Why is heater control stuck on blend Wont kick into defrost or heater?
Wiki User
∙ 15y ago
Check behind the heat control panel to be sure that the vacuum hoses are all securely plugged into the control switch. As a safety measure on all cars, if you lose vacuum altogether, the default position for air direction is on defrost, so you can always see out of the windshield. Jake McCahn
Wiki User
∙ 15y ago
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2002 Oldsmobile Alero only blows warm air when heater is on and only when its on defrost?
Could be,a stuck open thermostat,low on coolant,plugged heater core,faulty temp blend door actuator,
Why is your heater blowing constant hot air even when set to cold?
Heater control valve stuck open. Possible blend air door failure.
What could cause a sedona to have no heat?
There are several possible causes. A thermostat stuck open A heater control valve stuck closed A malfunctioning blend air door (located in the heater box) Low coolant level Malfunctioning heater controls
How do you fix the climate control selection on a Ford Windstar?
If you can turn on the heater but only cold air comes out you should check the blend door. It controls the door to switch from cold air to hot. It sits directly behind the heater/AC controls. It is white square plastic piece (approx 3in x 5in half inch thick and has a plastic screw rod that attaches to the heater/AC controls and they strip out.AnswerIt could also be referring to being stuck on defrost vents...See "Related Questions" for extensive information about changing the temperature blend door actuator motor and defrost only problems
I have a 2002 Ford Explorer that is get low air flow from the defrost vent when the defrost unit is selected. Most of the air flow is going to the floor vents. Is the blend valve bad?
Hi, It is not the blend door, that is for heat/cold changes. The mode door could be the problem, or stuck defrost door.
Why does the AC blow out of floor and defrost but not dash on an 1989 Chrysler New Yorker?
Sounds like a stuck blend door.
Why will a car heater blow out cold air when heater is on?
Low on coolant, stuck open thermostat, plugged heater core, faulty temperature blend door,
Why is the heater in your 06 vectra permanently on hot even when turned to cold?
The blend door is probably stuck.
Why does your heater blow cold air in your truck?
Low on coolant. Stuck open thermostat. Plugged heater core. Faulty temp blend door.
Why does your f150 heater blow cold air?
Low on coolant. Thermostat stuck open. Heater core plugged up. Temp blend door malfunction.
Why is your heater only blowing cold air in your car?
Low on coolant. Stuck open thermostat. Plugged heater core. Temp blend door inop.
Why is the Heater stuck on high temp on a 2001 mercury sable?
This sounds like a temperature blend door problem - with the door stuck in the heat position. See "Related Questions" below for information on Taurus/Sable blend door actuator motors and blend doors
