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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

1994 F150 A/C blower problem

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Old Aug 20, 2011 | 12:21 PM
  #1  
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From: Owasso Oklahoma USA
1994 F150 A/C blower problem

The A/C blows cold but when I switch to Max Air and then accelerate the blower stops. When I slow down the blower comes back on. It does not happen when in the Normal A/C position. I had a car do this before but it was happening on normal air and not max air. The car problem was a relay gone bad. Any ideas where to start checking?
 
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Old Aug 20, 2011 | 12:59 PM
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From: Easton,Ks
Sounds like you have a bad white vacuum line that is in the photo below.
What is happening is the air is going to defrost vent when you open the throttle.



/
 
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Old Aug 20, 2011 | 08:11 PM
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From: Owasso Oklahoma USA
You nailed it subford. Thanks so much. It was 104 today when I tested the repair. The vacuum tubing had started to crumble. I cut it off where it comes out of the bundle. Then I cut the tape off of the bundle and reconnected the vacuum line.Secured the bundle with tie wraps. I would have thanked you sooner but I got called into work right after I finished the repair.
 
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Old Oct 19, 2011 | 06:54 PM
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that happened to me and the hose rotted so far back i ended up just zip tieing the thing.
 
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