I've already soldered in a rectangular plug and got rid of the round. (Did it twice to eliminate it from the list) About the time I put the 85 distributor in the car is when I had a bad idle and stall for the first few minutes. I've gone through the list of things that it could be and have no luck fixing the problem. My last thought is the throttle position switch since it does hesitate if I just tap on the gas a little or press it really slow it will hesitate at first.

My reason for thinking the 83-84 distributors are different from the 85-88 is because I can't find anywhere that says for sure that they will work. Plus I've had this problem since around the time I replaced the distributor. I've gone through and replaced the fuel filter, FPR, Idle control valve, AMM, in-tank pump, main pump, swapped ignition ECU (had auto switched to manual), replaced intake manifold gasket, temp sensor under #4 intake, and other vacuum leaks, ect... I'm stuck at this point thinking its the distributor I put in the car. I'd like to eliminate the possibility of a ignition ecu communication problem with the distributor.

When driving, it just seems to just all of a sudden kick in, from running cold and having loss of power/hesitation, to driving with an instant increase in power. But it never really feels like its got all the power it should have. Like its running rich a bit or something. But it changes instantly from running poor to having some pick up and go after driving a few miles down the road.

If the 85 should work then all the better, grateful for some encouraging words about that possibility. Kind of strapped at the moment, construction is really slow, would rather not worry about throwing more $$ into it.

(Most of those items are new but I got some really good deals, like a $25 bosch FPR new in box or a new Idle control valve (bosch) for $100. The distributor was $25 and I got a good looking AMM remanned for $25 and had the ignition ecu from an 83 I had 5 years ago but parted out.) My 86 daily driver is rusting out on me and who knows how much longer I have on the transmission, 300,000 ml so far. So I don't mind throwing these parts at the car with no rust with hope of it being an investment for a solid car one day.