Antifreeze/Coolant not circulating
#1
Antifreeze/Coolant not circulating
2003 Durango v8 4.7 110,000 2wd.
Antifreeze/Coolant not moving when I take cap off ive done this with engine warm and cold?
Not leaking around the water pump.
I have heat in the Durango.
I was planning on filling the radiator for I know that I have a small leak in the radatior, since the antifreeze/coolant wont move it wont take any new Antifreeze/coolant.
going to try and use bars leak before going out and by an new radiator.
Would my problem be just a simple thermostat?
Antifreeze/Coolant not moving when I take cap off ive done this with engine warm and cold?
Not leaking around the water pump.
I have heat in the Durango.
I was planning on filling the radiator for I know that I have a small leak in the radatior, since the antifreeze/coolant wont move it wont take any new Antifreeze/coolant.
going to try and use bars leak before going out and by an new radiator.
Would my problem be just a simple thermostat?
#4
It might be time for a major cooling system overhaul . The 4.7L water pumps can sometimes have the impeller come lose which will cause poor to zero coolant circulation. Dont use system leak , it is only a band aid for a a failing part and can gum up the works in any cooling system. Replace the radiator along with the thermostat and water pump and be good for another 100k. Aftermarket Radiators vary quite a bit in terms of quality as do Thermostats. Spectra Radiators are a great value as well Motorad thermostats. Motorad now supplies the 4.7/3.7L thermostats to Mopar OEM so they are good quality, avoid Fail-safe as they are not reliable.
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#8
#9
I think you are over thinking this. The pump circulates the coolant inside the motor, you won't necessarily see the fluid moving under the cap. If your d is leaking fix or replace the item leaking, but if it isn't overheating don't be so fixated on seeing the fluid flow past the cap. Watch the fluid level in the overflow tank, the engine will draw from the overflow when it needs to. If the thermostat is stuck open the engine will not reach operating temp. If the thermostat is stuck closed it will overheat. Fluid only flows to and from the radiator after the motor reaches temp and the thermostat opens to let in cool fluid to cool the motor, otherwise the coolant only flows inside the motor as a closed loop.