a/c blowing out defrost vents, rommie CRANKY HELP!! - Ford Powerstroke Diesel Forum
 
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post #1 of 6 Old 07-12-2010, 09:49 PM Thread Starter
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Exclamation a/c blowing out defrost vents, rommie CRANKY HELP!!

my roomie is in construction & his boss has a 7,3, could be a 6.0, anyhow, he came home tonite in a less then civil mood. He said that the a/c was only blowing thru the defrost vents & his boss could care less, I told him i had heard something similar & would check. a cool roomie is a happy roomie. Anyone know what this is & if so, is it easy to fix, cuz he is ADDICTED to a/c & I have to bear the wrath, which, usually comes from me: being female & all

Any input is appricieated,

thanks,
LaURIE

Laurie
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post #2 of 6 Old 07-13-2010, 01:09 AM
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you have a vacume leak somewhere or the vacume pump isnt working. first turn on the key and see if you hear the vacume pump working.

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post #3 of 6 Old 07-13-2010, 01:13 AM
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If you don't know what the vacuum pump sounds like, when you switch the knob from defrost, to floor, or to vent, or max a/c you'll hear a hissing sound in the dash. If no sound, vacuum pump quit. If you do hear it, its got a leak somewhere, and good luck finding it lol

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post #4 of 6 Old 07-13-2010, 03:57 AM
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post #5 of 6 Old 07-13-2010, 04:21 AM
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Is it 4wd ask him if the auto locking hubs work?

The leak is usually down there

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post #6 of 6 Old 07-13-2010, 08:45 AM Thread Starter
ARMY MOM!!!!
 
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Ok, I will tell him, he isn't going to be happy if his a/c is out. He asked me cuz his boss/friend doesn't care if he is Hot BUT he may care if it affects his 4wd or another system. thanks

Laurie
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