94 F-350 A/C Problems
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Senior User
Joined: Dec 2006
Posts: 250
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From: 80 Miles N of El Paso TX
94 F-350 A/C Problems
Hi
My 94 has great air. Freeze you out. A couple weeks ago I was pulling a stock trailer load of cows & every time I pull a hill or put more of a load on the engine, the a/c started blowing out the defroster. Is this a vacum problem, or something else? Has anybody else had this problem? Any input would be great. It has a460 engine with a 5 speed if it makes any difference. Thanx
My 94 has great air. Freeze you out. A couple weeks ago I was pulling a stock trailer load of cows & every time I pull a hill or put more of a load on the engine, the a/c started blowing out the defroster. Is this a vacum problem, or something else? Has anybody else had this problem? Any input would be great. It has a460 engine with a 5 speed if it makes any difference. Thanx
Postmaster
Joined: Oct 2006
Posts: 4,816
Likes: 1
From: Davis & Newcastle, CA
Vacuum leak. Check the thin white vacuum line coming off the vacuum switch on top of the blower box (rear/passenger side of engine compartment). There was a thread about this just the other day:
https://www.ford-trucks.com/forums/6...eleration.html
Report back with your findings, I'm having a similar problem.
https://www.ford-trucks.com/forums/6...eleration.html
Report back with your findings, I'm having a similar problem.
Thread Starter
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Senior User
Joined: Dec 2006
Posts: 250
Likes: 0
From: 80 Miles N of El Paso TX
Funny thing just happened. I turned to the on position & floor, the I tried flipping it on to vent & it stayed on floor. Then I started it & everything works. It only does it on a/c when the engine is working usually. I looke at what of the white hose was exposed & I didn't see any tears or rips in the line. I will test it tomorow.
