What engine?
Does it have Automatic Temperature Controls (EATC)?
Some of the AC controls are vacuum operated......it may be a vacuum leak. You need to remove a few panels to get at it.......the front AC should still work though. I think your problem lies elsewhere.
Can you hear or see the compressor coming on?
Does it have Automatic Temperature Controls (EATC)?
Some of the AC controls are vacuum operated......it may be a vacuum leak. You need to remove a few panels to get at it.......the front AC should still work though. I think your problem lies elsewhere.
Can you hear or see the compressor coming on?