2010 DODGE 6.7 COOLANT NOT GOING BACK IN RAD FROM RES.

Asked by Jul 24, 2017 at 11:02 AM about the 2010 Dodge Ram 2500 Laramie Crew Cab 4WD

Question type: Maintenance & Repair

ENGINE SENDS COOLANT TO RES. BUT WILL NOT FLOW BACK TO RAD
HAVE TO STOP AND REFILL RAD.

5 Answers

104,155

Replace the radiator cap, had the same problem on a Bronco, repalced the cap no more problem.

did rad cap 2 times and water pump as well

104,155

Have you checked to make sure the system is pressurized, if it won't hold pressure it won't allow the coolant to feed back as it cools and the pressure slowly bleeds off.

yes the pressure stay up put a rad test on it and it holds pressure.

104,155

Then the only thing I can think of is hoses collapsing during cool down or a really stubborn air pocket.

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