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Trace the upper radiator hose toward the Grand Cherokee's engine until you reach the metal component connecting the hose to the engine -- this is the thermostat housing. Find the coolant temperature sensor -- the electrical component on the thermostat housing. Press the locking button on the coolant temperature sensor wiring harness and pull the wiring harness from the sensor, then remove sensor it screws out. when putting in new sensor coat the threads with teflon pipe thread tape so there is no leaks.
Remove lower radiator hose clamp and lower radiator hose at thermostat housing.
Remove thermostat housing mounting bolts, thermostat housing and thermostat.
2000 Jeep Grand Cherokee 4.0l v6Note:on the In-line 6 4.0L model the thermostat housing is mounted at the top of the engine block next to the water pump.
Yes, at least enough to be below the level of the thermostat. Heater on high when refilling, and wait for new thermostat to open, while filling...Pressure test when finished.
I would recommend flushing the cooling system and replacing the thermostat.....easy to do and only about $14 for a new thermostat.If that does not work then you either have a coolant leak somewhere or a bad heater core. I would also pressure test your cooling system before you flush the system to look for leaks in the system
follow top radiator hose from radiator to engine wear hose ends, it will be clamped to whats called the gooseneck, thermostat is under that. you will have to drain coolant, not all, maybe 1 half gal. before you remove it. 2 bolts new gasget new thermostat, just remember spring on new thermostat goes in engine.
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