Thread: AC BLOWING HOT
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      Today, 05:11 AM   #8
BMW_340
(formerly sp330i)
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Drives: BMW 340i
Join Date: Sep 2019
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Quote:
Originally Posted by DickBlisken View Post
Check your small coolant reservoir. It's responsible for cooling intake air as well as A/C. If you have a leak in the system and it's empty, then your A/C will blow hot.

I had a rock puncture my heat exchanger, which caused the system to leak and fail. The first symptom I noticed was hot A/C.
I agree. I had a similar issue with no coolant in the small resevior. Once the system was topped up, I had ice cold air.
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