Update from today:
I checked power at the ecm, and I have proper voltage. Checked the three ground wires from the ecm, which merge into one, and they are good. Checked all my other grounds, less than .3 ohms. All good.
Another thing I've noticed is the traditional beep beep when you turn the key is absent on the first key in of the day. The even stranger part is that after sitting overnight, it will ALWAYS roar to life for about 2 seconds after cranking. Then it dies with absolutely no chance of getting a sneeze out of it again for 24 hours, unless supplementing fuel.
At this point I think it's my ecm. I'm nervous since that's two times in three years. I am sending it to OBD ii diagnostics in CA. He seems very knowledgeable, and he will test my ECM, and if it's bad, fix it or replace it. I really don't want to spend 2700 on an mefi 4 with a messy harness.
If the ECM checks out, I'm going to pull the harness out and peel off all the tape, then check every last wire. I also ordered a new ignition module, and while I'm at it, a new coil.
This thing better purr like a kitten when it's done! Just finished an engine refresh over the winter... New oil pump, gaskets, water pumps, valves lapped, stem seals, etc. everything else was within spec so I didn't touch it.
I checked power at the ecm, and I have proper voltage. Checked the three ground wires from the ecm, which merge into one, and they are good. Checked all my other grounds, less than .3 ohms. All good.
Another thing I've noticed is the traditional beep beep when you turn the key is absent on the first key in of the day. The even stranger part is that after sitting overnight, it will ALWAYS roar to life for about 2 seconds after cranking. Then it dies with absolutely no chance of getting a sneeze out of it again for 24 hours, unless supplementing fuel.
At this point I think it's my ecm. I'm nervous since that's two times in three years. I am sending it to OBD ii diagnostics in CA. He seems very knowledgeable, and he will test my ECM, and if it's bad, fix it or replace it. I really don't want to spend 2700 on an mefi 4 with a messy harness.
If the ECM checks out, I'm going to pull the harness out and peel off all the tape, then check every last wire. I also ordered a new ignition module, and while I'm at it, a new coil.
This thing better purr like a kitten when it's done! Just finished an engine refresh over the winter... New oil pump, gaskets, water pumps, valves lapped, stem seals, etc. everything else was within spec so I didn't touch it.