Problem with AC... - Ford Powerstroke Diesel Forum
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post #1 of 17 Old 08-02-2013, 04:19 PM Thread Starter
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Problem with AC...

The air from AC is blowing through my defrost instead of the vents. What is going on?

Please help!!!

Thank you guys this forum is awesome!!


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post #2 of 17 Old 08-03-2013, 02:26 PM
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Usually it's a vacuum leak in the hubs.

Karl

Karl and his 2003 6.0

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WHAT!?! I was trying to list stuff that everyone else
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post #3 of 17 Old 08-03-2013, 05:32 PM Thread Starter
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How do I check that?


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post #4 of 17 Old 08-03-2013, 06:09 PM
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There is a sticky for it on the website. I think itls under general 6.0 discussiom.

Karl

Karl and his 2003 6.0

Barefoot Accelerator Pedal
TRICO Force wiper blades
Yellow Military Aircraft Valve Stem Caps
Offensive "Stick Family" Decal
Big Ol'Honkin 1 1/4" Shank Receiver Hitch


WHAT!?! I was trying to list stuff that everyone else
hasn't already listed for their truck!




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post #5 of 17 Old 08-13-2013, 01:44 PM Thread Starter
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I checked the hubs they appear to be fine no issues with hoses. My vacuum pump runs constantly?

Clearly I have a vacuum leak. Help please?




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post #6 of 17 Old 08-14-2013, 07:57 AM Thread Starter
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Can anyone help me?


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post #7 of 17 Old 08-14-2013, 08:20 AM
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I have had this happen twice and it was and it was 2 different things. Sorry I did not look to see if u have auto climate control. I do. First time I had issue I had to get entire unit. 2nd time it happened it was a control box with a chip in it that went out. I don't remember where the box was and I am at work and no paper work. It was like 1/4 the price of the climate control unit. I can dig around this evening for paperwork to get name of part.


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post #8 of 17 Old 08-14-2013, 03:26 PM
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If you have the electronic HVAC control and start having phantom issues, 9 times out of 10 its the resistor. I think ford calls it a module. This is a known issue. It's located on the fan housing under the hood. When it fails you can get symptoms like you describe also fan only forks on high and comes out of wrong vents etc. I'd start there. You can do searces here on a/c problems, a/c not working, vents not working etc. the information you seek is located in these forums.

2005 Excursion Limited 6.0L, Zoodad, Insight CTS w/Pyro and fuel pressure, blue spring, Coolant filter, Rancho RS9000xls w/ MyRide wireless, DC power alternator, Tekonsha P3, Door seal mod. 08+ style tow mirrors, Stainless braided brake lines, Powerslot cryo rotors, Hawk LTS pads, Britebox So far.....
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post #9 of 17 Old 08-14-2013, 03:35 PM Thread Starter
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Is there you guys could take a pic of the parts your talking about?

As for the forums, I've been searching for 2 weeks now with possible resolution but nothing that's been mentioned has been the problem on my truck.

The resister is the first I've heard. I'm not getting vacuum to the solenoid behind the actual unit in the dash.

Thank you guys for responding, it's a huge help


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post #10 of 17 Old 08-14-2013, 03:54 PM
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I did a quick search here for "a/c resistor" and got several hits. In this one there is a pic. don't know if it is for yours. Mines an 05 excursion and there is another pic somewhere. I'll try and find. give me some time to find it.
Intermittent ac issues
also in certain years, there is a fuse befire the resistor. Here;
Blower fan issue 04 F 550

also read this one. climate controls not working

2005 Excursion Limited 6.0L, Zoodad, Insight CTS w/Pyro and fuel pressure, blue spring, Coolant filter, Rancho RS9000xls w/ MyRide wireless, DC power alternator, Tekonsha P3, Door seal mod. 08+ style tow mirrors, Stainless braided brake lines, Powerslot cryo rotors, Hawk LTS pads, Britebox So far.....
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