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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 07-18-2012, 01:52 PM   #1
The King Wraith
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Join Date: Jul 2012
Location: Moneta, VA
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My Ride: 330 ci
Question A/C, I read the posts, took the advice... made things worse!!!!

Ok, I have a 2005 330ci convertible. I have been reading a common problem in these threads of air cold on left and warm on right. (Peaves my girlfriend off!!!) Well, I had the same problem. So.... per advice of these threads I found the low port and got a cold recharge kit from Advanced. However, pressure never got above 25 while charging and right after it reached 25.... (8 or 9 minutes) the pressure gauge started quickly dropping on the kit and the A/C clutch disengaged and wont turn back on. I checked the fuses, never got a smell inside or out of the car trying to explain the sudden drop in pressure. Was thinking that maybe the system reached a pressure point and something opened up trying to cool both sides instead of one???? dunno. I am 100% sure that I was using low pressure point and everything was correct per filling instructions. Was contemplating just getting another kit and trying to bring the pressure back up but since the compressor clutch isnt turning on now im not sure what to do. Please help!!!!
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Last edited by The King Wraith; 07-18-2012 at 01:53 PM.
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Old 07-18-2012, 02:21 PM   #2
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Take it to a shop. AC systems are complicated and throwing refrigerant at it without proper knowledge or tools (at the VERY least a proper manifold gauge set) can quickly lead to an overcharge condition, which can cause damage.
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Old 07-18-2012, 02:25 PM   #3
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I am really surprised that in all of these cooling threads that no one mentions that the refrigerant needs to have oil with it, most kits you buy from the store already have a certain amount of oil mixed in with the coolant. If you happened to just buy the refrigerant and put it in with out the oil then from what I remember the refrigerant particles are not able to move around as easy and therefor does not give the cooling effect -Your system may be fully charged , but has the wrong amount of oil ??
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Old 07-18-2012, 02:36 PM   #4
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The purpose of the oil in refrigerant is compressor lubrication.
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