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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

NO Vent air, JUST DEFROST!

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  #16  
Old 04-21-2004, 03:28 PM
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Quote:
Originally Posted by StreetGlowF-150
I think maybe its your selector motor. (couldent be really positive) having the same problem i can change my vent to blow cold or hot air or what speed i want it to come out but cant change off of defroster. There is a control motor back in the dash it would require taking the dash out but i think if you change that you'll be free to select the output.
Have you changed this motor on yours? What yr do you have? THanks
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  #17  
Old 07-22-2014, 05:06 PM
Stephen Mcmichael Stephen Mcmichael is offline
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ac

I have a 2000 fi50 and my ac only blows out the floor and defrost driving me nuts any ideas
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  #18  
Old 04-15-2015, 12:21 PM
PRIMERED79 SHORT BED PRIMERED79 SHORT BED is offline
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Old thread I know, did anybody find a fix for this?
I noticed mine has been doing the same, blowing only out of the defrost.
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  #19  
Old 04-15-2015, 05:06 PM
PRIMERED79 SHORT BED PRIMERED79 SHORT BED is offline
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Found my issue.
The vacuum box near the fire wall on the passenger side has a crack on the bottom.
Bypassed it and all the controls work now.
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  #20  
Old 04-15-2015, 06:28 PM
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Quote:
Originally Posted by PRIMERED79 SHORT BED View Post
Found my issue.
The vacuum box near the fire wall on the passenger side has a crack on the bottom.
Bypassed it and all the controls work now.
Good deal. If you find the HVAC switching back to Defrost under load again you may need to repair that small reservoir or make one.
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  #21  
Old 04-15-2015, 06:48 PM
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  #22  
Old 04-15-2015, 08:10 PM
PRIMERED79 SHORT BED PRIMERED79 SHORT BED is offline
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I tied it into the vacuum can on the fender, seems to work good.
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