850 A/C hypercool

SimLyons · Post by **SimLyons** » 05 Jul 2011, 17:50

Tis the season for all the A/C issues to show themselves. Mine started in late spring when I wrote that my A/C didn't cool. With the help of the folks here I got it working just fine. Good pressure, great output temps at the vents, no leaks, etc.

Now...I turn on the A/C and it puts out cold air at all temp settings (Mine is the 97 850 R with the Climate Control). Whether I set it at the coldest or hottest (as long as the A/C switch is on) it is chilling us out! Any suggestions for where to look?

Post by **jblackburn** » 05 Jul 2011, 18:02

To the temp sensors!!! They are the vents in the grab handles above the front doors. Take a computer duster can to them and blow em out real good.

Cold AC sounds heavenly right now and I cant wait til i see my car waiting for me. I just ran 4 miles in 85 degrees and a thousand % humidity. Bleh.

Post by **jreed** » 06 Jul 2011, 05:29

I did a short write up a while back on this topic:
https://www.matthewsvolvosite.com/forums ... =1&t=32617

trs80 · Post by **trs80** » 06 Jul 2011, 06:27

There are also sensors behind the dash in the duct work. Not sure if those would be a problem but wanted to let you know.

SimLyons · Post by **SimLyons** » 06 Jul 2011, 13:04

I took a can of "Dust Off" out to the car and gave both sensors a good, fairly gentle dusting. It's gonna be hot this afternoon so I'll test in a few hours. If that didn't do it I'll uncover the sensors and maybe use the brush.

Thanks for the great advice!