Auto >> AutoSPT >  >> Engine

How do you fix the air conditioner on a 2002 Ford Windstar that switches from panel to defrost vents when engine is under load?

Here are some possible solutions to the problem of your 2002 Ford Windstar's air conditioner switching from panel to defrost vents when the engine is under load:

- Check vacuum lines. On these vans the vacuum lines have a habit of cracking around the corners by the manifold, causing loss of vacuum pressure.

- Check and replace the vacuum reservoir. This part will also deteriorate under the hood's heat and become weak, unable to maintain vacuum pressure.

- Check the actuator on the plenum. With a helper watch under the hood as you turn the temperature knob from cold to hot while the van is idling, see if the door is physically sliding open and shut.