Intermittent Heat then blows cold HELP! | Ford Explorer Forums - Serious Explorations

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Intermittent Heat then blows cold HELP!

Joined
October 29, 2006
Messages
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City, State
Chesterfield,VA
Year, Model & Trim Level
'93 Explorer 4x4
On my 93 XLT the heat will work for a few moments then it will go out. Then it will come on and go out agian. The blower is working, but it is unusually loud outside the truck. The running temp is normal. I was thinking a duct or something along those lines. I need heat:mad:

Thanks for your help.
 






It might be the blend door. There are a lot of threads which describe this problem. Check for a broken vacuum line. A vacuum leak could throw off the control. I has that problem on my 88 Aerostar. The plastic vacuum line had a crack in the area where it connected to the control actuator.
 






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