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Unread 10-09-2013, 02:43 PM   #1
XJroller
Registered User
1996 XJ Cherokee 
 
Join Date: Dec 2006
Location: , Colorado
Posts: 6
On the hot side of 210

1996 Cherokee Classic, 4.0l, automatic.
When I purchased this truck a couple of years ago, I immediately replaced the rad, H2O pump, thermostat and filled with 50/50 mix of antifreeze and distilled H2O. Last fall I noticed the system was VERY rusty, so I used the Preston rad cleaner, filled it with new coolant and distilled H2O and buttoned it up for the winter. A few months ago, it overheated. Changed the H20 pump, fan clutch and thermostat. Still over heated. I was advised that there was carbon in the coolant so I replaced the head gasket, BMW (WT430) engine coolant temperature sender (on rear of head on drivers side) and (CarQuest 71-2547) engine coolant temperature sender (on thermostat housing) refilled with new coolant and distilled water, still overheated.
I just finished replacing the rad with a new one, removed the water pump and the thermostat housing, flushed the rad and heater core (both ways) refilled with new coolant and distilled water. So far it is has not OVER heated but the gauge reads on the hot side of 210. I have 5 Jeeps (3-96, 1-95 and 1-00) and when they are maintained properly they all operate on the cool side of 210. Could one of the temp sensors be the wrong one. I did have a hell of a time finding a 2 connector unit with the correct shape for the thermostat housing at the local parts stores. As a matter of fact, when the part number is pulled up at CarQuest, there is a message that states the part does NOT fit that year and model Jeep. But it does "FIT" the connector.
Scratching my shaved head.

Thanks

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