92 XJ with 4.0 L. I'm visiting my sister out of town, it was running fine when I got here on Friday night. It sat outside until this morning, and the temps were down to -30 with the windchill for most of the weekend. I tried to start it this morning and it turned over but would not start. We took it up to the heated shop and thawed it out for six hours, still would not start.
I charged the battery, even connected a 225 amp jump-pak to it to try and start it. There is no moisture in the dizzy and it looks clean. I just installed a new coil on it trying to make it start. It has injector pulse and fuel pressure in the rail. I checked for spark and it had good spark, though it was only sparking about every half second which I thought was a little slow, but have never checked it before at startup. I don't know what else to do.
I charged the battery, even connected a 225 amp jump-pak to it to try and start it. There is no moisture in the dizzy and it looks clean. I just installed a new coil on it trying to make it start. It has injector pulse and fuel pressure in the rail. I checked for spark and it had good spark, though it was only sparking about every half second which I thought was a little slow, but have never checked it before at startup. I don't know what else to do.