Those coolant and oil temps look around normal.Are you putting in at least 5w40 viscosity oil? Some are owners now using Penrite 10w40 Enviro which has correct CJ4 specs.I presume the coolant has been bled correctly through the bleed screw on the thermostat!are you still losing coolant ? Temp sensor ?dirty thermostat .Did you fit a new thermostat?There are numerous owners who complain about the fans on these,hope somebody has a few more ideas. Is it throwing any codes,these two speed fans are working off the ECU have you done a reboot ie neg lead off for say 30 minutes.Is yours an actual 2017 build or2016 .
Did the engine overheat when the oil cooler failed,?
Last edited by bjm; 20-04-2024 at 07:27 AM.
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