Any thoughts on why an AC would blow cold through the defroster but not through anything else? 2008 Ram 1500
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Might be the recirculating door fell on top of your fan.
Take your glove box door off
Take the fan off
See if the door fell on the opening
If it fell on top of the fan pull the door through the hole
*your recirculator function with your truck won't work anymore but the AC and heater will still work.
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Originally posted by 6.5 shooter View PostDoors usually break in the HVAC plenum. Requires a full dash removal.
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Originally posted by Smart View PostWhen the AC defaults to the defrost vents, I usually start looking for a vacuum leak.
I had a cracked hose to my vacuum pump and it couldn't build up enough pressure to move the blender door. Evidently the default is defrost. Simple fix for me. Locating the leak is the big thing.
This is where I would start looking also
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Originally posted by dustoffer View PostWas having a similar problem with the plenum door on wife's 2010 Chevy SUV and my mechanic quoted me $1500 to fix it due to the dash disassembly. He said "Trust Me" and did a redneck fix for $75.
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