chiefwahoo

The A/C Clutch isn't engaging in my 1999 A6 2.8 I thought at first it was just low on freon, but I put the guages on it with a can and it sat for 5 minutes and still wouldn't engage. I didn't use any freon out of the can either. I looked for a fuse in the fuse box, but there isn't one there. I then called my local Audi Dealer parts dept and asked about a relay, and he informed me that his computer didn't show one in the system.

Any ideas???

SloopJohnB@mac.com

But what pressure(s) did the gauges show??

chiefwahoo

I jumped the a/c clutch and it engaged. So now I know it's not getting a signal to engage.
When I had the clutch engaged and engine running, the low side was around 50-60 psi. I don't know what the optimum pressure is because when I worked on auto a/c it was r-12. I would appreciate any feedback on that also.
My inside air to outside air is only around a 20 degree drop.

chiefwahoo

bump

2.7Lturbo

dude.... tone down the exlimation points.... when i get home from the longest day at the office ever i will read your post more carefully with a nice cold beer in one hand, and the a6 bentley in the other

virgo193

did you get home?