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If the system is charged and the compressor will not cycle, does this mean that the ECU has failed? Car in question is a 190D 2.2 5 speed (1984). Mechanic said it has adequate charge. Mentioned pressure switch or control panel but he doesn't know and doesn't want to investigate any further.

Kevin
1979 240D
1984 190D

Quote:

Originally Posted by JimmyL

Your AC issue could be a near total loss of freon. Often folks with a big leak cram it full of freon for perspective buyers, then it all leaks out. Pressure switch keeps the compressor from coming on when freon is low. Either check that out, or have it checked somewhere. You can jump the pressure switch to see if that kicks on the compressor, but on a 190 I'm not sure where that is. Someone will chime in, or you can use the search function.
Congrats on the car. What color?

This is in your previous AC post. Jump your pressure switch to see if it failed.
Also, does your tach work? Reason I'm asking, on some of these the AC is somehow tied into the fuctionality of the tach via the Klima relay. I'm just not familiar enough with 190's to know if this applies.

thanks Jimmy, I forgot about that.

Kevin