A/c on defrost fix - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 04-27-2013, 06:52 PM Thread Starter
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A/c on defrost fix

Mu 2000 f250 only blows on defrost the ESOF works and the vacuum pump works think the problems under the dash. Need help

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post #2 of 7 Old 04-27-2013, 06:54 PM
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it might be the actuator

u can open the glove box past the norm by pressing in at the stop

the actuator is there

pull the vac hose and change the ac vent selector and feel for vacuum at the hose

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post #3 of 7 Old 05-25-2013, 05:42 AM
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mine has the same problem. i am in the middle of an engine swap and discovered this after a little bit of digging. check the quality of all your lines.

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post #4 of 7 Old 05-25-2013, 05:40 PM Thread Starter
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Thanks man where is that located in the picture

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post #5 of 7 Old 05-25-2013, 07:15 PM
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see the main harness in the bottom right? that little bit is mounted to your fender skirt with 1-2 of those little plastic push pins.
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post #6 of 7 Old 06-01-2013, 12:48 PM
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Does the vacuum pump run CONSTANTLY? It should shut off once a certain threshold of vacuum is reached.

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post #7 of 7 Old 06-01-2013, 12:49 PM
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In my case with that split in the line I bet it would be.
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