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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old 10-28-2012, 11:16 PM
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Heating Problems

Hey guys needs your help my wifes 89 f150 5.0 wont blow heat out of any of the vents. I pulled the cover off where the heater core is and checked the door its working and you can feel the heat coming off the core. But when I put the cover back on no hot air blows out the vents. Please help its starting to get cold and I hate the cold and so does she.
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Old 10-29-2012, 12:11 PM
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Sounds like the blend door isnt working properly. How did you verify that it is working?


When a similar deal happened with my truck, there was a piece of plastic broken and wedged in the blend door so the door worked, but stayed open far enough that the heat wouldnt fully get to where it was going.
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Old 10-29-2012, 03:06 PM
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Check all vac. lines I had a similar issue but it was cold are defaulting to defrost Most of the vac. lines are under hood on passenger side and go into truck near glove box.
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Old 10-29-2012, 03:06 PM
 
 
 
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