Hello. I have an 88 lx with the factory 5.0.
Having a problem with power on the fuel pump circuit. I'm not real good with electrical, but can work out the basics.
The issue is the car died while running in my friends driveway. after some quick checks, we found the FP wasn't running.
I then checked that the blue fuseable link (from the solenoid) has power. the relay under the drivers seat was bad and replaced. still no fuel pump.
Then I checked voltages to the the safety switch in the trunk, and the eec power relay.
Everything is good, except that the EEC Power Relay doesn't have power on the Black w OJ stripe wire. See picture...
With the blk/oj wire tapped and connected to the battery direct, the car runs fine. where do I go looking for the break in the wire?
it seems as if it comes off the solenoid (blue fuslink) and runs in a harness under the battery, and then I imagine it routes back through the firewall at the PCM. or does the other side of that circuit with the TFI and the ignition switch have any effect on it?
There is also another blue fuseable link in part of the harness right by the firewall on the pass side. I haven't torn into the harness there to check what it runs to. any suggestions welcome.