04 Dodge dakota 4.7l v8 magnum Just bought truck has 100.000 miles on it. -overheating

Crazywomandriver2019

I have no water leaks..no Water in oil.No noise or water coming from waterpump..Clutch fan looks and feels good and working .Rad fan comes on when truck hits normal temp and when ac is on so think its working.?no water or smoke out of tailpipe.Truck runs normal temp when on highway with ac on or off.But if im in stop and go traffic truck will overheat after a few minutes temp rises slowly does this with ac on and with ac off. What could this be!All i no to check next is Flush Radiator change rad fan relay and or fuse or maybe the low or high relay Thinglol on radiator.Help please

PF_Flyer

How about the thermostat?

Crazywomandriver2019

Honestly I didnt test or change it because it only happens when the truck is in stop and go traffic or I sit at a stoplight for several minutes.I figured if it was thermostat It would get hot anywere i drive and temp gauge would change when Theromostat opens.?

zingotim

try bleeding for about 15 min

thecardoc3

Your going to lose some coolant with this check. Pull one of the heater hoses and have an assistant start the engine while you observe the flow. Just a few seconds time should be sufficient. If you have good flow, something like a garden hose at half open then the water pump is fine. If you have poor flow or maybe almost no flow you will need to remove the waterpump and inspect the vanes for cavitation/errosion. Look closely at the front timing cover to see if it has also worn.