You're right, my bad. Now that I think of it in that context the "timing jumper" term has a different meaning. I was soley thinking about CEL diagnosis and forgot the second use for the jumper. I am keen to all that you posted, but the thread owner may not be.

I'm used to my OBD1 motor too. You seem to have more info on the OBD0 stuff so you can take it from here.

Good info :thumbup: