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Old 05-19-2014, 10:11 AM
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AC blowing hot air help

08 6.4 rest in sig.
Drove to the ranch yesterday and had the defrost on running at 70 in the morning then around noon I switched to 60 degrees regular AC and it started blowing hot air....any ideas besides broken compressor
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Old 05-19-2014, 11:04 AM
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Sounds like the blender door actuator. There are several threads about them. 3 in the dash. Looks like kinda a pain the butt. On the other hand they are only about $25 each.
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Old 05-19-2014, 11:05 AM
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I can still change from defrost to floor to dash no problem but it just blows hot
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Old 05-19-2014, 09:44 PM
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Look at the compressor when the ac is running and see if it is cycling. It is a pain to see it, a flashlight helps. If it is not running the compressor, you will need to check the refrigerant pressure. If it is too low, the compressor won't run. If it is on the verge of being too low, it will not work in extreme heat, but may work in the morning when the heat is not so bad. If the pressure is good, then it could be an electrical problem somewhere. You would have to see if the compressor is getting power when it is turned on at the ac panel. If it is not, then check fuses, high and low pressure switch, wires, etc.
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Old 05-20-2014, 12:06 PM
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Just got it back one of the pressure hoses broke off and leaked all the freon out. New hose installed and system recharged and good to go.
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