My new-to-me 2002 S60 had a burp in the AC system today. While in traffic the AC got very, very weak. Went home got the thermometer and inserted it into the center vent. re-started the car and the AC felt cold. Went for a drive and at highway speed it is blowing 40 F --- fine with me. Went for a long drive and it ranged in the 40F area. Went on a road that I could go about 30 MPH and it still blew cold. If it is blow 40F I don't think it would be low in refrig and it doesn't' seem to be doing it again.

I am not very familiar with this car. Wondering if there is an ambient temp sensor inside the car that could be acting up? The outside temps are 90F.

I hope it was just a burp in the system because climate controlled systems can make me go crazy. This is my wife's DD and she won't stand one moment for no AC in her 60 mile round trip commute.

Maybe a good evac of the system but Volv has gone out of their way to hide that low side down under the pwr steering pump. I have yet to find the high side. Where the heck is the accumulator?

I need to add this car to my Alldata account.