mfendley

It's a lot easier to see here, since there is no AC compressor blocking the view. I has a NOS coil, bracket, and voltage-reducing harness on the way, should be here on Tuesday. This weekend I am going to work on the blower motor. It currently works, but only slowly. I thing I will get a new blower motor and resistor pack. Any tips on the blower motor?

How is this coil identified? I think I will get a new coils, along with the kit to relocate to the shock tower, if I can find one.

Not sure of age of gas cap, but I am almost certain this is ignition related issue. Once the Comanche is up to temperature, it is like something is turning the ignition off briefly, and then it comes back almost as quickly. The instances are 30-45 seconds apart, but then starts happening more frequently. Once this has happened enough times, the unburned raw fuel in the exhaust ignites, and a backfire occurs with a visible flame out the exhaust pipe. If enough of the occurrences happen in a short period of time, the engine dies, and then is impossible to restart until the engine fully cools down.

When I replaced the distributor, it was the entire unit. I have replaced the CPS and the coil, but the replacement parts were from Advance Auto, not OEM. I will look into finding better quality parts. Relocating the coil away from the engine makes sense, will try that also. Haven't had a chance to pull the codes yet, the truck is at a mechanic's shop I trust to see what he was able to find; nothing yet. I also purchased a replacement engine wiring harness (junkyard, but appears to be in good condition) as I read there can be issues between the harness and ECU. I appreciate all of the suggestions presented - I will report back what cures the problem.

Thanks HOrnbrod. I will check and report back. bluenotenick - which relay?

Son's 91 Comanche 4.0, 5-sp. Runs well when cold, but dies after warming up (5-8 minutes driving). Gauge is in 175-185 range. Have replaced ECU, distributor, coil, wires, plug, CPS on electrical side. Replaced fuel pump and filter on fuel side. When driving, it almost feels like someone is turning the ignition off, and then back on immediately. First it happens briefly, then gets more frequent, until the engine dies, leaving the Comanche stranded on the side of the road. Will not restart until fully cooled down. Thoughts?