I have a 1992 BMW 735I. Was blowing cold up to 2 weeks ago. I was driving and all the sudden stopped blowing cold and started blowing warm but not hot. I check the Compressor and working fine, I check the 134A and show about 6 lbs, in the safe side. What could be the Problem? Is it a temperature sensor. The gauge tells me the out side temp. The heat blows when I adjust the temp up to 71 or more. all the motors. seem to be working when I test them. Any subjections? let me know please
Thanks