oldmjnut

:typing: OK, Bigfoot II is back from the shop and the NO POWER NO GO! problem turned out to be a bad negative battery cable connection at the engine. It was loose, cruddy, the covering split open and all covered with 20 years of gunk. Cable and clamp replaced and :clapping: it starts like the champion that all Comanches are meant to be. Several of the responses were right on the money and I appreciate everyone's interest and help. :bowdown: You're a wonder-filled bunch of folks - let's all have a cold one :cheers: Make mine Hofbrau!!!

All good advice, thanks Fellow MJ Nuts, greatly appreciated and I will follow the sequence, process of elimination, next time it happens. :typing: Will also post results when problem is solved. CHEERS :cheers:

Thanks for your post, XX The battery is new, only 6 weeks old. I cleaned the posts and checked to see that they do not move one way or another - all ok. Also cleaned inside the battery clamps. Removed all conncetions from the solenoid and cleaned them, made sure they have good contact and screwed them back on. Somewhere there is a wire making contact at times and other times not making contact. Hum, to find it ... will drive ya :nuts:

Dead engine! New battery. No power. 89 Comanche 2.5L won't start, nothing, no starter turning over, no juice to anything. Tried the lights and windshield wiper test, no go. Meter on battery checks out with 13 volts. I take the battery out or disconnect it overnight, reconnect and it starts right up. Works fine for 2 or 3 days and dies again, no power to anything. My super mechanic is stumped - he really is a great mechanic, have used him for years, even with my first MJ. Says there is a short in some power line which corrects itself overnight, perhaps one of the small lines from the solenoid. Mechanic disconnected the engine compartment black box at firewall going to interior fuse block, cleaned it some, scratched some of the connectors and reassembled. He says, and I agree, it hard to find an electric problem when the car is working, running. Mechanic says I should take my tester with me and when it happens again, start poking through coating each line from solenoid. Will do! Has anyone had similiar problem? Any ideas? THANKS! :cheers: