Ignition problem?

[mazikowski]

I have a 1991 D21 with the KA24E. Before getting it, it seems to have been severely neglected all its life. Recently we replaced the oil pump and ever since we have had a strange (and most likely unrelated) problem. It will start but after running for 10-15 minutes if you turn it off it will not start back unless it sits for about an hour. If you start it, let it run for a little bit (30sec - 1 min or so) and turn it off, it starts back up without a problem. We have replaced pretty much the entire ignition system (including plugs, wires, cap, rotor, coil, ignitor [the little god-awful-expensive thing mounted to the coil bracket]) and are still having this problem.

Any ideas?

[neverlift]

test the Coolant temp sensor

[mazikowski]

Haven't checked the temp sensor yet. That will be the next step.

Replaced the distributor today and still the same problem. If the truck runs for about 15 minutes it will not start back after you turn it off.

Any ideas guys? Seriously about to take it to a field and set it on fire!!!

[mazikowski]

I think we have it fixed now. Replaced the ECU coolant temp sensor and all seems to be well. Looks like neverlift had the right idea.

Just wish that was one of our first guesses instead of spending close to $500 on a whole new ignition system. Whatever... new parts are good parts.