My new daily driver. 1984 dodge rampage

Side note the fan runs while the keys is on no matter what.[/QUOTE]

Check the fan relay on RH strut tower. It could be stuck closed, also check thermostatic fan switch mounted to the head near the thermostat. Should be a 2 wire switch this closes to turn on the cooling fan, and opens to shut it off. Easy check on the fan switch with an ohmmeter. When engine is cold and shut off unplug fan switch, and probe both pins. It should be open. When engine hits operating temp unplug the switch and probe both pins it should read full continuity.


FYI The single purple wire connected to the sending unit in the head that looks like a mopar V8 temp sender unit is for the temperature gage, and has nothing to do with the fan operation.

The fan relay is wired to close and open with engine temp changes, but also to operate in override if A/C switch is selected.