1994 Dodge Dakota

Engine Cooling problem
1994 Dodge Dakota 4 cyl Two Wheel Drive Manual 160000 miles

My Dodge Dakota has wild swings in temperature (according to the temp gauge). I replaced the radiator recently and have new hoses and thermostat. In addition, the heater doesn't work. When I open the radiator cap, I notice that the temperature cools when the coolant " burps" (when coolant comes out the upper hose). Could this be a water pump problem? The pump doesn't leak. Also, the upper hose doesn't get hot.
July 31, 2008.

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