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Idahome
Joined: Wed May 2nd, 2018
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You should drain the whole system, flush it a bit, and run 100% water for a few days like Madmaxx mentioned and see what happens. A good flushing might help you a great deal here. Running water for a few days will eliminate a bad mixture as the issue.
Your water temp gauge is pointing rather high for a ranger just running around, usually the needle has a hard time going past the half way mark. But the factory gauge does not mean much, even though yours is higher then I would like to see.
SO how many miles?
Does this ranger have the single core radiator?
I will assume changing the water pump, fan clutch and thermostat/housing have all been because of this issue? (points to radiator)
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I build custom RBV, specializing in drivetrain conversions, wiring, suspension and complete custom trucks