Hello, Fordsters out there: I hope someone can help me. I'm working on a '97
explorer with 4.0 sohc. It will crank but won't start. This is what I've checked
so far: cam position sensor, crank sensor (after verifying supply voltage to ignition module). According to the manual I'm using, if you disconnect the cam position sensor plug and turn the key on, there should be 1.5 volts present at that plug: it's missing. I checked the connector at the pcm (wiring diagram available) and all dc voltages and ground connections appear good: there were no broken wires between the cam and crank position sensor plugs and the pcm connector, yet the 1.5 volts is missing. I bought another pcm and tried that. Still nothing!!! ANY IDEAS, ANYONE??!! By the way, this started out as an intermittent problem. The owner would complain of the no-start condition, then, after the vehicle would sit for a few days, it would start right up and run fine for a little while (longest period about two weeks) and then not start again.