i noticed the ac on my 90 350sdl was not working too well on a recent trip. my first thought was low freon. then i noticed that the car seemed to be missing out from time to time. finally i realized that the ac compressor was cutting in and out by the clutch.

so,... do they cut in and out if freon is low? or is is likely a problem with the clutch itself?

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.