When idling on hot days, the coolant temp climbs above normal, but not into the red. My understanding is that the electric fan should come on to prevent this. A new 195 degree thermostat did not help. The electric fan works fine when connected directly to the battery. The coolant temp sending unit transmits seemingly appropriate info to the temp gauge on the dash. No wiring diagram I can find (Haynes manual, Jeep owners manual) mentions or shows a fuse, relay or fusible link in the line. Nothing in the passenger compartment or engine compartment is labelled with helpful info.
What is next in the troubleshooting process?
Thanks
When these electric motors get older they weaken causing them to move at slower speeds. It could be the fan is not turning fast enough to cool the block.
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