i have such kind of problem on my BMW 523 E39 1996 AT
when i'm driving with Climate Control my engine works very badly
Temperature is on 16 Degrees..
so first of all when i'm in a condition of standing my car is shaking like it's earthquake
secondly when i'm starting to accelarate my automatic gearbox changing speed on an 4000-5000RPM ... and to change first speed to second it needs 4-5 secondss
when i turn off climate it works properly and without any error
so please help me .. what is wrong with my car