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Discussion Starter #1
Alright, My jeep while running down the highway has always been at 210. About two weeks ago it started running at 215 220. I took the thermostat out and boiled it and it opened. Coolant isn't low overflow has coolant. I have my fan on a switch so I control when it goes on. WHAT'S GOING ON WITH THIS THING????
 

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Discussion Starter #2
It's weird because while just running around town it stays about 210 when I keep it about 45 it stays around 215 220
 

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How many miles? In order of likelihood: thermostat, water pump, rad. How often have you drained/flushed/changed the anti-freeze?
 

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Discussion Starter #4
fresh antifreeze with the change of the thermostat and heater core about two months ago. Water pump is two years old.
 

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Check the Radiator/AC Condensor (if equipped) for obstructions/clogs/bent fins/etc
 
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