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Also, the water pump could easily cause an engine to start running hot. Water pumps don't necessarily go completely bad all at once. It could be just starting to go bad, the worse it gets, the hotter the engine will run. Also, if the radiator did indeed need flushing, then understand that the inside condition of the radiator and the water pump will naturaly be the same. So the chances of the water pump going bad would be pretty good. One other possibility could be a crack in a head. If the overheating happens in low city driving only and at highway speeds the egine runs ok, look into the hydraulic radiator( 2000-2002 only) fan. It is possible that the fan is not running at all. Run the engine with the hood open. When the temp gage starts climbing, look at the fan blade to see if it running.

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16y ago

What else can I help you with?