On 9/14/2025 at 4:00 PM, Zed Head said:

There is no cold start sensor.

You're at a good point to read the Engine Fuel chapter.

You need to read this. It will explain how the things work that you're playing with.

2 hours ago, Zed Head said:

Actually the tachometer and the ECU use the same circuit for the coil discharge signal, from the coil negative terminal. It's branched. One end goes to the ignition module for spark creation, one to the tachometer for the RPM measurement, and one to the ECU pin #1 for injector timing. Every third spark the ECU squirts half the fuel "calculated" to be necessary.

Okay, cool. thanks for the correction.

ITS ALIVE. i decided to take off every electrical connection off and deep clean each pin. they didnt have bad corrosion but the copper had turned green where it wasnt connected for the last 20 years. I double checked each pin ohms coming through the ECU and finally got each reading within spec. Started it up and boom perfect idle.

I appreciate all you're guys help. the resources and information helped a ton.

now to bleed the clutch, find out why the break pedel is stuck and see if this thing can move!

Edited 6 hours ago6 hr by Toiletduck34