AC problem. help! - Ford Powerstroke Diesel Forum
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  #1  
Old 07-21-2009, 08:07 AM
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AC problem. help!

been tearing apart the truck for a week or two now to no avail. thought it was the vacuum pump but today we realized that there is no vacuum to the acutator. kinda came to a wall after findin that out. what do i do from here?

jake
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Old 07-21-2009, 06:25 PM
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what exactly is it doing? not cooling?
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Old 07-22-2009, 08:01 AM
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it only comes out of the defrost vents and there really is no difference between hot/cold. we got the bottom to start blowing just air by moving that metal piece on the vaccum sealed cylinder behind the dash. then we took off the actuator and dad showed me how when he turns the air on in his truck it will suck onto your finger, when we did that to mine, there was no suction.

jake
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Old 07-22-2009, 08:09 AM
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did you replace the vacuum pump?
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Old 07-22-2009, 08:18 AM
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You are aware that "defrost only" operation is a signal designed in to the system to tell you that you have a vac. leak. Look at all vac. lines including your front hubs.
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Old 07-22-2009, 04:14 PM
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thats helpful we thought so but we arent sure. can someone please post up what the pump should look like because i think im missing a line somewhere but i wanna check it against someone elses.
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Old 08-10-2009, 05:33 PM
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I think it is on the passenger side fender when u first turn the key to the on position it should run for a second or so
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