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Ahh, so that would indicate my ECT is working. Ok, back to the most probable cause being the starter cables I guess. Thank you so much for digging this up and saving me from ordering another ETC.

Just to be more clear, my Jeep has always started, it is just taking longer to start in the cold weather, on that initial start. It does crank noticeably slower during that first cold temp start, but just slower, not struggling to turn over slow. Block heater cures all But I never used to have...

Checked the ECT and found it reading 14500 ohms at 65F. That is apparently what it should be reading at 0F so I will install a new sensor and so how that works out.

Thanks, I haven’t checked my engine coolant temperature sensor yet but will do so now.

Sounds like that rules out pump, pressure regulator and injectors. I'm going to go ahead and replace all the starter motor wires. Will post the results But I’m not sure how the wires could explain your similar cold start issue given your warmer climate. I’m beginning to wonder if our old...

Have you ever put a fuel pressure gauge on the fuel rail to make sure you aren’t losing fuel pressure in the rail overnight?

I like this idea, thank you very much. Extra thanks for including the wire set to order. Will order and install and let everyone know the results. Today it started a little slowly after sitting in a 60 F degree garage over night. Left it outside all day in -2 C temps but with the block heater...

I guess my biggest question is why would a block heater make it start right up in freezing temperatures if the problem was being caused by a tired ECM or a bad sensor or even a weak coil. I can’t think of anything the block heater would help on initial startup other than the starter motor.

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I‘ved searched on this “common problem” but haven’t found anything yet to lead me to the solution. Most solutions seem to point to a tired ECM. My YJ runs great, starts great when’s its warm outside, but once the temps start to drop to near freezing it takes its time, several cranks before it...