Climate control AC issues - Ford Powerstroke Diesel Forum
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Old 05-28-2013, 12:22 PM
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Climate control AC issues

2005 F350 Lariat

I had this in to my local diesel mechanic and he wasn't able to figure it out. Started with my AC not wanting to come on in "auto" climate control mode. Just blew warm. They switched it to just AC where you set the fan speed, and the AC worked fine. Said nothing wrong with compressor or AC system itself. As time has gone by, there is no way now to predict when the air will blow cold or on what setting it will work on. Some times works in auto, some times in regular AC mode, and sometimes takes pushing the AC button several times before it will blow cold air.

Am worried the climate control unit is going out. Am I wrong? Any other suggestions?
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Old 05-28-2013, 12:26 PM
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EGR unplugged?
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Old 05-28-2013, 01:51 PM
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Maybe the head unit is bad and need to replace that. I have had to on past trucks my family has owned and it worked after that.


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Old 05-28-2013, 03:43 PM
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Quote:
Originally Posted by Dave View Post
EGR unplugged?
Had the EGR replaced a 13000 miles ago with BullitProof upgrade, unless you are talking about a different EGR.

Quote:
Originally Posted by thumper280zx View Post
Maybe the head unit is bad and need to replace that. I have had to on past trucks my family has owned and it worked after that.


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Do you have a part number, price, and repair details? Is this an easy replacement?
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Old 05-28-2013, 03:58 PM
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I don't have the part number the I got the unit whole sale through my friend who was a mechanic like $100 bucks and its just unbolt unplug and replace


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Old 05-28-2013, 04:02 PM
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I doubt the control module is less than $250 for the Auto air unit
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Old 05-28-2013, 04:05 PM
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Quote:
ASH CONTROL UNIT HEATER & AC; F250 Pick-Up; w/ATC; To 9/19/06 1999-07 SUPER DUTY

MSRP Core ? Save Online Price
$568.82 $0.00 $159.27 $409.55
,,,,,,,,,,,,,,







now my response is long enough pain in the ### rule
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Old 05-28-2013, 04:07 PM
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it may just be a blend door ?
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Old 05-28-2013, 09:02 PM
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Do these all require removing the dash?
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  #10  
Old 05-30-2013, 09:24 PM
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I had goofy HVAC symptoms in my 05 Ex. Have digital controls. Ended up being the resistor on the back of the fan located in enging compartment. $40 part. Fixed it.
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