Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › 2006 Durango (4.7l ) overheating on highway › Reply To: 2006 Durango (4.7l ) overheating on highway
March 30, 2021 at 1:29 pm
#989772
First check for any leaks.
Pressure test the system.
Leak down test each cylinder
Check cooling system for combustion gas
Back flush the heater core
Flush the cooling system
Check the operation of the cooling fan
Check for debris blocking the radiator
If needed vacuum fill the cooling system