Electrical

[tj21]

Shouldn't there be infinite resistance between the negative and positive terminals when unplugged from the battery?

Any tips on tracking this down?

Comanche has been running super rich forever, and I think I have it narrowed down to the wiring. Sensors test ok, but I don't think the computer is receiving the correct signal from them.

 

[dasbulliwagen]

No I don't think there should be infinite resistance. Circuits that run all the time, like clocks, or radio memory will show a resistance value from positive to negeative like that. Or if you have a door open youll get resistance through a light bulb circuit.

[HOrnbrod]

Looks like you're reading 20.5K ohms which really tells you nothing. You could be reading through a diode, through the ECU, who knows? Reverse the probes on your ohm meter and see if you get the same resistance reading. If the same, the next logical step would be to try to isolate the resistance to a particular circuit by pulling the fuses one by one and see if resistance increases to infinity. Then you'll know at least where to look and determine if the resistance is correct IF you have the FSM wiring diagrams.