please help with ac issues - Page 2

Weasel · #11 09-17-2009, 07:53 AM

PAG100 sounds right, I think that is what we have at the dealer. (can check when I get to work)

As for the oil, you don't want to put too much in the system as it lowers the cooling capability, but don't want too little for obvious reasons as well. I'd just add back what you drained from the compressor adding a little bit for what spilled.

Sponsored Links

Repoman · #12 09-21-2009, 06:52 PM

Well, finally got it all back together again. I vacuumed it for about 30 minutes and it held vacuum for another 30 minutes . . . no leaks. I filled it back up with freeon and took her for a test spin. She blows mid 40's, not too bad considering I took a guess about how much oil to add back into the system and if I missed I wanted it to be on the high side. Every other ac component working fine.

The aftermarket ac clutch coil got me back going again. Total expenses for repair were $39 for new clutch coil, $17 for 2 cans of freeon and $8 for a bottle of PAG100 refregeration oil. This compared to the expense of replacing the compressor due to the fact that the compressor clutch coil is not sold seperately from the compressor. Autozone gave free loaner for vacuum pump and guage set.

Special thanks to Weasel, you are the man!!!!!!! I followed everything you said verbatim which led me through proper diagnosis and repair. It was like I had a BMW specialist looking over my shoulder the entire time.

Thanks again Weasel!

amacman · #13 09-21-2009, 07:20 PM

could either of you chaps say what colour and viscosity the a/c compressor oil is .
i have a 4.4i M62 motor leaking some clear/yellow very clean oil . seems to be somewhere between a/c compressor and engine block as far as i can see .

Weasel · #14 09-21-2009, 08:13 PM

Repoman, glad to see you back in action!

amacman, the PAG oil in the ac system is indeed a clearish/yellowish oil, and tends to remain clean throughout its life. Sounds like you may have a leaking compressor.

If it gets low and stops cooling as it should, at least you have a heads up on the problem ahead of time.

Repoman · #15 09-21-2009, 08:17 PM

Clear/Yellow very clean is exactly what it looks like out of the bottle. Viscosity for my calsonic compressor was PAG 100 which is considered "medium" viscosity which is about as viscuous as a hot canola oil.

amacman · #16 09-21-2009, 08:45 PM

I think you chaps just helped figure the leak . the car is booked for inspection 2 at 60000 miles and annual MOT inspection so i shall ask tech to look at a/c compressor .
i have removed the stiffener plate to try to eyeball or feel for leak with no specific sign of the actual leak point . i even looked around from above at a later time with an endoscope and can only determine the leak as coming from that area , can`t even get the scope right in there without pulling a few bits . car has bmw extended warranty thankfully .

amacman · #17 09-22-2009, 02:19 PM

Repoman , would you remember the thead title by Katit on compressor repair. i have tried a search and can`t find it .

x5turtle · #18 09-22-2009, 02:37 PM

can you provide us with the info where you get the clutch replacement? In case anyone want to attempt?

Thanks!!

amacman · #19 09-22-2009, 02:41 PM

whilst you are waiting for answer try searching posts by Katit or air conditioning i was just looking at that info but lost the link . page 2 or 3 of search results , a post with 61 replies , i gotta go now so find it yourself .

Repoman · #20 09-22-2009, 06:33 PM

Here it is, it's a long thread, 61 posts. The info regarding the coil is between pages 5-7 of the thread. Here's the link:

http://www.xoutpost.com/bmw-sav-foru...failure-6.html

Guy's name is Adam. He's a nice guy, somewhat hard to understand with the accent but got me what I needed. His contact info is in the thread.

Sponsored Links