After replacing the cps, I continued to have same problem with '93 850. During one of the failures to fire, I checked fuel pressure and there was none. Replaced fuel pump, and its fixed.

After replacing the cps, I had same problem with '93 850. During one of the failures to fire, I checked fuel pressure and there was none. Replaced fuel pump, and its fixed.

'93 850...problem...a/c compressor doesn't cycle. I have no 12 volts at low pressure sensor indicating a/c relay; however, when I apply 12v direct from battery to pin on the switch, engine running, the compressor runs about 45 seconds, then clutch cycles off. After about a minute, clutch works again...