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I assume you live in a cold climate. This is probably due to a bad thermostat (stuck open). When this happens, the coolant always flows through the radiator and never has a chance to warm up (a properly operating thermostat will stay closed to prevent the coolant from entering the radiator until it's hot). Changing the thermostat is pretty easy. It is located at the block end of the upper radiator hose (follow the hose out of the radiator, between the alternator and A/C pump, down to the block). remove the 2 bolts and pull up on the hose. The thermostat just lifts out. Remember to scrape the old gasket and replace it using Gasket sealer. The thermostat should be 'closed' when you pull it out. I suspect you'll find yours 'open'. Good Luck!

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16y ago
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Q: Why won't your 98 durango get up to operating temperature?
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