Question about 2001 BMW 325

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325i 2001 bmw, only one side from vents ac is working flowing cold air, driver side only, passenger side is only like warm air?

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Had same problem with my 01 325ci ..... talked to several bmw independent technicians and found out that the evaporation coils run across the dash from driver side to passenger side. If you get low on freon, then the driver side will continue to cool down, but the passenger side will gradually stop cooling or blow warm air. Solution ,is to check for leaks in AC and then recharge the system w/freon .... unfortunately , with my car intead of a 150.00 bill for a AC coolant recharge from normnal wear

Posted on Jun 04, 2010

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I have a 2000 m5 with the passenger side vents being hotter than the driver’s side. In my efforts to repair this problem I replaced the heater control valve and the problem still persist. There is a ten degree difference between the passenger side vents and driver’s vents at any temp setting. I used a digital temp gauge gun. A/C charge is good I had it checked with a three gauge setup 35 lbs on the low side and I can’t remember the high number but it was in the blue. Maybe the in dash temp sending unit? As a test I used an ohm meter to find ground and the two positive terminals on the control valve. For anyone’s reference the wire closest to the firewall is the ground brown in color, the other two yellow with red and pink are positive. I forced the valve closed using a spare plug and battery and the problem still persist. I know that there is no water flowing through the heater cores and now I’m lost. Maybe a bad expansion valve in the a/c causing the a/c to not get cold enough? The driver’s vents will get down to 46 degrees on recalculate. I also jumped the two positive wires going to the valve to make both of the temp settings the same with no different results. I did this by using one of those cheap blue plastic jumpers and then tested the voltage on the plugs. I’m running out of ideas and need a little help from someone who has gone through this with positive results.
Thanks for your time you can respond on this thread on to my email purehonda2000@hotmail.com (old email don’t hate!)
Joe Randall

Posted on Aug 20, 2010

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As per your problem mentioned. There are few solved help links to troubleshoot these problems. Go through the list and Click the link below:----

2000 Toyota Avalon: No heat on Passenger Side?

http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-no-heat-on-passenger.html

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http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html

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