problem with air conditioning unit!

[alexiou68]

Ok so my girlfriend had an accident, in her BMW 1997 328is a while ago and they had to do some work to the air conditioning unit. Now it comes on when it wants to! Sometimes when it turns off, it starts to blow hot air. She can't bring it back to the same shop because its not in the area. Any ideas to why? Maybe a loose wire?

[alexiou68]

anybody???

[iflyM3]

It's hard to tell without actually seeing it in person...it could be that she needs a new a/c compressor, a leak somewhere like in a hose, or as simple as recharging the refrigerant (r134a).

[318daily]

my guess is the final stage unit (or sometimes referred to as the Final Stage Resistor). It happened on my E39 528i.

I have the info in my car blog:
http://members.cox.net/bartolome/html/blog/528i/2005/11/138800-final-stage-unit-required.html

obviously the procedure may vary for your E36. Good Luck.