Thrilled new owner of a '92 400E, I picked her up in Houston last weekend and drove the 500 miles home. At about 300 miles into the trip there was a couple of minutes of intermittent "squealing" much like regular (metal->metal) brake wear indicators seeming to originate from the passenger side. Almost immediately after that happened and stopped the air went from dried and cool to humid and outside temp.
FWIW the PO knew the car to loose freon over the course of a couple of months so he topped it off for me before we got there and it blew cold wonderful air for the weekend and that first 4-5 hours of the trip home. I did stop at the next exit and bought a can of freon to see if it had just escaped that quickly but the system still read completely full (according to the little can's gauge).
I've been reading from this board as well as others the last few days trying to figure out where to start? Some posts that sounded familiar indicated the Base Module (that I've now learned to be living in the direct spot I heard that odd noise from) could be a common culprit. I have checked fuses inside that vault and on the driver's side with nothing blown.
Could the more knowledgeable weigh in on where to start so cool air will come back into my life? How likely is that Base Module to be bad, how would I know, how would I know that a replacement was good?
Thank you for the help!