my 87 300D doesn't. Actually, when I have the ac on at the vents and cooling fine, if I switch to defrost, the AC goes off or at least the window gets hit with warm air. My Recir. button also is not functioning. Any ideas?

Bert _ NH

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1979 300SD 83k miles Astro Silver Metallic/Black leather #3447
1990 350SDL 202k miles (3L engine from an 87 300D)Black/Grey leather
2006 Pleasure-Way Class B MoHo (Sprinter chassis) 134k miles
2005 E320CDI 270k (car is sooo fast - I can't believe it's a diesel!!!)