Bimmerfest - BMW Forums - View Single Post - a/c blowing hot
Thread: a/c blowing hot
View Single Post
Old 09-19-2010, 11:35 AM
balance balance is offline
Officially Welcomed to the 'Fest
Location: NC
Join Date: Feb 2009
Posts: 766
Mein Auto: 97 740iL
If your low side and high side pressure lines in the a/c system are both hot, then I'd guess that there either a clog in the system, or the compressor isn't making pressure. But these are just guesses as I'm not too familiar with a/c systems. What I do know is that the low pressure sensor should cut the compressor off if there is low pressure, so if it is staying on even with no charge, then that is odd.

You should take it to a shop that has the pressure guages (if you don't have them) and see what they're reading.
Reply With Quote