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Discussion Starter · #1 ·
The A/C blows cold when car is moving but gets cool to warm when at idle or in stop and go traffic. BMW checked it out to be ok; the A/C System has no leaks and is fully charged.

But I know that there is something wrong.

Has anyone experienced this? What is my problem? :dunno:
 

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So when the dealer was looking at the problem, was it blowing cold air while the car was in the shop? Sounds like an intermittent problem. My guess is that the (AC fan) blower resistor (A.K.A. final stage resistor) has gone bad. It's a $100 part, and you can buy it online. Easy to replace, 30 min job. It's under the glove compartment. Do a search in the E39 forum and you'll find the DIY procedure.
 

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Discussion Starter · #3 ·
Yes it was blowing cold when I took it there; however, your right it is an intermittent issue. Thanks for the reply, good information!
 
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