I just put in a new CSF 3 core radiator, water pump, hoses, thermostat and new sending unit for the electric fan for a 92+ xj 4.0L in my 87 xj. It runs great on the highway temp right around 195 degrees.
But overheats in stop and go driving.
I noticed the electric fan is not coming on when hot. I installed the new 92+ sender in the water outlet as there is no connection in the radiator on a 92+ as was originally on the 87 radiator. And just soldered the wires with extra wire to connect to the stock wire harness location.
I am wondering if the sender unit is compatible with the 87 electric fan?
Has anyone successfully completed this part of the cooling system conversion?
Or is everyone wiring the electric fan to a switch?
Also I am wondering if my clutch fan is gone bad? It seems to spin easily when hot and cold.