96 Windstar, Heater Fan only works on High.

1996 ALL OTHER MAKES ALL OTHER MODELS
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SASNGANG
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96 Windstar, heater fan only works on high... Any help? Also, once last summer, the rear HVAC would blow hot air, when the front HVAC was set for cooling. I suspect a faulty switch or relay or vacuum solenoid. Any help would be appreciated............ THANKS.
Jan 17, 2006 at 9:45 PM
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TGULCH
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could be your blower resistor..it limits the voltage to your motor to change the speed it blows at...blowing at one speed only could mean a shorted resistor..of course some vehicles dont have them also..cant say for certain on yours
Jan 17, 2006 at 10:31 PM
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SFISH460
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The resistor pack has resistors that set the fan voltage for low med and so on. The high setting uses no resistor so when the resistors burn out (common) it only runs on high.
The rear ac uses a vacuum solenoid to switch from heat to ac. on the back of your rear heat ac fan switch there's two vacuum lines, when in ac mode, the vacuum connects and draws a vacuum on the rear solenoid, mine did the same thing, I replaced the heat, ac switch and it worked fine.
Apr 7, 2010 at 8:41 AM
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