I noticed yesterday that the air out of my vents was not getting cold. When I got to my driveway, I restarted the car, and the AC came back.

No luck at all so far today. It takes a long time to switch from hot to cold, including an awkward period of warm air in the side vents and cooler air in the center vents.

I cannot hear the click of an AC compressor that I here so easily with my W123 and R107. Does the compressor audibly activate on a W124?

I see a heater valve on the passenger side of the engine bay behind the firewall, and am thinking that would be the likely culprit. The belts are all new within the past few months. Any suggestions? I hope its not a Friday the 13th situation and Jason has just put an ax in my Evaporator.

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1985 500SL Euro w/ AMG bits 130k
1984 300SD Turbodiesel 192k
1980 240D Stick China 188k
2001 CLK55 AMG 101k
2007 S600 Biturbo 149k Overheated Project, IT'S ALIVE!!!