AC Charging Issue

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socalfiver
Posts: 229
Joined: Wed Jul 21, 2010 12:31 pm
Location: Los Angeles, CA

AC Charging Issue

Post by socalfiver »

Ive just replaced all 3 rubber high pressure ac lines as well as installing a new receiver drier and belt.

I have run a vacuum on the system, and it holds 30 lbs vacuum.


When i try to fill the system with refrigerant (r134a), it wont accept refrigerant and the sight glass remains empty. Adding just a small amount of refrigerant causes a very high low side reading, but there is no cooling effect and im seeing nothing through the sight glass.

Any suggestions? Plugged expansion valve? Bum compressor?

I did this same process on my 633csi and it worked great. Same system, as its e12 based.
"Get it while you can." -Janis Joplin

1980 528i Automatic, "Frau Blucher"
1982 BMW R100RS
1982 633csi 5 speed
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Mike W.
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Joined: Wed Aug 30, 2006 12:12 am
Location: Sonoma County

Post by Mike W. »

I wonder if it could be something as simple as the schrader valve isn't being properly depressed and opening the valve. Even if you had a plugged expansion valve you should be able to get something in.
Mike W.



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