It is overheating because either; 1. Radiator coolant is low-check and add if necessary-make sure a leaking water pump is not the cause 2. The thermostat is stuck closed and needs replaced 3. The radiator is bad-the tubes are clogged (remove the cap and visually inspect the inside of the radiator) and, or the cooling fins between the tubes are loose and falling off (run your fingers over them to check)-replace with a new one or have that one recored.
Low on coolant, radiator fan inoperative, thermostat failed, water pump failed, radiator plugged
In front of the radiator.
Low on coolant, radiator fan inoperative, thermostat failed, water pump failed, radiator plugged, etc
It is under the housing that the upper radiator hose hooks to on the engine.
Water pump defective.
I'm not a mechanic but, I had to replace my radiator to fix the overheating problem on my 1994. That was the last thing I replaced after replacing the water pump, thermostat, and replaced my fan with a clutch fan. have not had anymore problems with it overheating once the radiator was replaced. Flush the coolant first then replace the radiator. Hope this helps.
check coolant check for leaks.......radiator cap must be free of rust and tight....plugged radiator, heater core. change the thermostat its probably stuck shut
On the radiator...
This is typical of an engine being low on coolant in the radiator, check your radiators coolant level and fill it.
A 2000 Dodge Ram does not have a cabin filter.
check your thermostat. or maybe your radiator is plugged up.
Under the housing where the upper radiator hose hooks to the engine.