First... I have blocked off my front hubs w/ a rubber boot. I turn my truck on and sometimes it blows out the face (where i left it) and sometimes out the defrost (which I understand is the default mode). If it comes out the defrost I can turn the A/C off and then back on and it will come out the face. Any other mode ex floor it will blow out the defrost. Not sure if this has anything to do with it but all the above is when it is set at 60 degrees. If I increase the temp to 70 degrees sometimes I can get all the buttons work perfectly fine. Hit floor it goes to floor, face goes to face ect. I know it sounds weird but any help would be greatly appreciated. BTW I have taken the rubber cap off the line and checked it with someone holding their finger over the and it does the same thing so I know its not there at the box. Thanks again.
A/C issues
- Thread starter lomac9
- Start date
rammertide07
Full Access Member
Fill out your sig in the user control pannel. That way we know what we are helping you with and can better assit you.
rammertide07
Full Access Member
Go to the "User CP" at the top of the page.....scroll down, look on the left and select "Edit Signature". After you type in the trucks description make sure you click the save button at the bottom.
bigrigr
Real trks hv 3 pdls
Sounds like a bad controller to me, off the top of my head. If the a/c is controlled by the body ecm, it sounds like it's going wacky
Still haven't figured this thing out. Driving me crazy. Turn A/C on it comes out the defrost, turn off then back on it comes out the face and sometimes face and defrost. If you push any of the buttons it just automatically blows out of the defrost.
DaveBen
SDD Senior Member
You have the Classic Vacuum leak. I will bet you have Automatic Four Wheel Drive. The vacuum lines to the hubs are usually the cause. It defaults to defrost anytime the vacuum goes out.
Dave
Dave
