I'm having problems getting the A/C compressor to turn on on my '87 240. When the garage charged the system, they said they had to use a jumper to get the compressor to turn on so they could charge it (to bypass the on/off switch, not the pressure switch), so when I got it home I removed that portion of the dash and was going to swap the switch with one from my '85, but there's a capillary tube running from the switch to somewhere under some sticky foam-like stuff, so I didn't swap it. However, in messing around with it, the compressor came on and worked for several days. However now it's giving me problems again. I've taken the lower dash apart and then the compressor engaged, but after 30 minutes or so disengaged again and I cannot get it to engage again. How do all the wires and capillary tube interact in the on/off switch? Do you think the switch is the problem? If so, how do I change/repair it? Thanks for the help.
Marlin