troubleshootin

Yes, I've searched. I have no spark. Replaced igniter and coil. Still no spark. Traced wires back to ecu. Between the plug at the fire wall with the rubber cover and the ecu, all wires seem to have continuity with the blue (tach) wire. Sounds like a short, right? Or there is a shielding problem, (assuming there is shielding over there wire to prevent leakage), and it's leaking over.

All fuses (esp 50A fuses it calls to check in the book) are good. Main relay is good (fuel pump primes). What else should i check?

lazlong

Did you check for a code? What about the cap and rotor? A lot of these EF guys end up replacing the entire distributor.

troubleshootin

No code. And the cap and rotor was an obvious first step. Perhaps it maybe a fried ecu, though there are no burnt or broken solders, and none of the traces are burn. I can't see anything that needs to be reworked.

mastapw7

Did you ever find the solution for this? I'm having similar issues with my '91 DX.