A/C problem

JOELM123

MEMBER
2004 BMW M3
3.2L
6 CYL
RWD
MANUAL
145,000 MILES

My A/C has developed two issues. First, It only cools on the drivers side vents. Second, It has a hissing noise coming from the vents as well.

Thursday, June 22nd, 2017 AT 8:31 PM

1 Reply

CARADIODOC

MECHANIC
33,737 POSTS

Sorry that I'm not familiar with your model, but given your second dandy observation of the hissing sound, I'd suspect your system uses vacuum-operated actuators and one of them is leaking or its hose is disconnected. Search the source of that sound first, and hope solving that solves the vent issue.