I recently purchased this car, the A/C didn't work when I got it. The previous owner said he replaced the evaporator. The compressor doesn't want to kick in. I'm assuming that it needs a recharge (don't have a gauge though), but I found some switches disconnected and have a few questions. Attached is a photo of the receiver as I found it. Both the temp and pressure switches where disconnected. I'm not sure if the PO left it that way or my mechanic. The pressure switch is reading a short across the terminals and the temperature switch is reading open. What's normal with the engine off? Should disconnecting the pressure switch and opening the circuit allow the compressor to kick in (which it doesnt)?

Also, my dash is telling me that the outside air temp is 20 deg F. Does the climate control system use this information? Would that contribute to the compressor not kicking in?

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Jay Kickliter
Chasing 'trons (my thoughts and tutorials on electronics and stuff)


1995 E300D-Black on Black