Engine Overheating/Heater Blowing Cold Air - Dakota Durango Forum
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post #1 of 3 Old 11-12-2011, 05:52 AM Thread Starter
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Engine Overheating/Heater Blowing Cold Air

I have a 2002 Durango SLT 4.7L with approx. 84,000 miles. A few months ago I had a problem with the engine overheating. I took it to a repair shop, that checked it out & changed the thermostat. That solved the problem for a few months, but within the past 2 weeks I have started having problems with overheating again, mainly in stop & go traffic or city driving while at stop lights. Yesterday I had a coworker mention that my engine sounded like a jet engine. I left the engine running, opened the hood, and stood in front of the vehicle. There was a definite whine that sounded like it was coming from the front of the engine, but I couldn't isolate where in the parking lot at work. In addition, today the heater would intermittently blow only cold air. When it was blowing cold air the engine would overheat. After a few minutes with the heat & fan set on high in the defroster mode, it started blowing hot air again & the temperature gauge dropped back into the normal range. Before this incident with the cold air I thought it was the water pump, but now I'm not sure. Does anyone have any suggestions about what this could be?
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post #2 of 3 Old 11-12-2011, 06:51 AM
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yes sir i know check your coolant level!! same EXACT thing been happening to me and i was way low on coolant dunno where it went but it wasnt all there. lemme know if you need more help/info. i drained what was in it today filled with fresh water let it run awhile then drained all of that... let motor cool filled back up with water and a bottle of peak coolant flush and tonight driving home from work blasting heat and didnt overheat once tomorrow ill drain and fill with proper amount of coolant and water...

also our heater cores are notorious for clogging so get a garden hose adapter and flush both side of the heater core out u be surprised what comes out

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post #3 of 3 Old 12-12-2011, 09:59 AM
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timing belt cover gasket.
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