97 E350 7.3 IDM Relay Clicking...Bad PCM??
Turn the key on and the IDM relay just clicks very rapidly, on the PCM relay for post 30 and 85 i have 12 volts, at 87 have 6 volts and 86 has nothing. On the IDM relay i have 12 volts at 30 but only 6 volts at 85 and nothing at 87 and 86, Ive pulled the fuse box apart and all the wires look good, cleaned the batteries and checked the grounds and all looks good. Also took the PCM connector apart and all the wires look good, and tried a known good IDM with the same results. Im leaning towards a bad PCM but need more info and some help before i drop the cash on a new one. Thanks