Problem fixed, tracked back good distributor reference pulse. Tracked back injector ground pulse wires to ECM pin 14 and pin 16. No ground pulse. Fix was the PROM in the ECM
Replaced prom truck started
I'm having the same issue. 88 TBI spark no pulse with noid light. Truck runs if I spray starter fluid. Checked grounds. I'm obviously missing something. Now looking at ECU control wire to injector pulse pin A6 have constant 12V
I changed out the entire distributor assembly to eliminate ICM and...
A BIG thank you, i have been looking for the frame dimensions for a long time, im replacing the back section of my frame from spare tire mount back fabing new shock mounts crossmember and airlift so this just made my week. extremely useful link.