Join Date: Feb 2012
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Vacuum pump issues
So my defrost has been stuck on. I've read a bunch about people saying its just a vacuum leak, but i dont think it is.
I have eliminated the auto hubs, and capped off the hose to them. My blower stays in defrost unless i switch it to 4x4, then it will go back to the vents of my choosing. When i switch it back to 4x2 it still stays at the vents until i switch it to defrost mode, then if i try to switch it back i gets stuck in defrost. Alternatively, if i leave it on vent after doing the 4x4 switch, once i put it in drive it switches back to defrost.
I dont believe the vacuum pump is leaking because it doesn't continuely run, and i pulled the hose off and capped it after the vacuum chamber and it worked as it should. Is their something else that is messing with my blower system?
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