I completed repinning my harness, and have checked about a half dozen times to be certian that the locations are correct. The problem I'm having is as follows: Key "ON", fuel pump primes and SES flashes once. Crank the engine, and there are no distributor reference pluses. With the 4 wire distributor connector removed, and 12V applied to CKT430(ppl/wht dist ref wire), the fuel pump will prime again as its supposed to. Easy fix right...bad ignition module? Nope, swapped in a new one, and no change. Tested the coil, module, and pickup coil...all check out ok. What the hell am I missing here? Please help me out here guys, I'm ready to get this thing running sans MAF. -Jim

this in your s10? Ran before ecm swap? Possible vats problem?

Yes. However it ran fine with '165. I had a brain fart and forgot to disconnect the batt. While I was repinning, one of the 12V wires arched on something, so I'm trying to back track what I may have screwed up. I'm at a loss here, I wish I had a spare '730 to try so I could rule that out.

did you have new prom burnt for 730 ecm?

Yeah, I forgot to mention that I have an Ostrich, and an AUJP memcal. I burned a new AUJP bin, which I bypassed the VATS, AIR and changed the VSS to optical input. I'm gonna try another check of the pickup coil, I hope to find something there. It doesn't make sense to me that the ECM will turn on the pump when 12V is applied to the dist ref. wire. Any other thoughts?

Did somemore testing today. The pickup coil is at ~750ohms, and there is infintate resistance when checking the leads. I guess that checks out ok. Took the ignition module to Advance today, and it tested good also.

Is is possible that the pickup coil can test ok, but still be no good? I did have some funky issues and hard starts with the '165, but I assumed it was the ECM... tapping the case caused the engine to stall. This is why I swapped ECMs in the first place.

I'll be swapping distributors tomorrow, maybe that will get some results. As I understand it, the ECM has nothing to do with cranking spark. So, I should still be getting spark, even if my ECM is toast.

Do you have large dist. Check for 12V at power supply wire might of fried a fuseable link.

It turns out the pickup coil was junk. I tried a new distributor, with the same module and ignition coil, and now I have spark. Its odd that after repinning my harness, this problem arose, so I hope the new one doesn't get cooked too. I guess the moral of the story is even thought the parts may test ok, it can still be bad.