Patient is '98 SVT E0 w/ 140,000 miles. Been great car but nothing lasts forever.
Died at 60mph during long highway trip. Cranks but won't fire. CEL is lit both with switch on and when cranking. No pump noise, no pressure behind releif valve. Fuses and relays OK, gets power to harnesss at pump, so, new fuel pump.
Wrong. "Power" was only 6 volts. Jumper across relay does kick pump into action. Should have tried that first. Well, pump replacement would have been needed soon anyway. Onwards.
Relay not getting low side signal. Got code reader and it cannot communicate with PCM. Harnesses and grounds seem to be OK but I'll be looking closer.
Anything else to check before replacing PCM?
