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2006 Durango (4.7l ) overheating on highway

Home Forums Stay Dirty Lounge Service and Repair Questions Answered Here 2006 Durango (4.7l ) overheating on highway

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  • #989771
    William WatsonWilliam Watson
    Participant

      Been working on this for a while. I think there’s a small coolant leak underneath, haven’t pressure tested. Flushed out some rust. Lower hose not collapsing. No heat coming from heater core and blend door works. Replaced rad cap first. upper rad hose hot. Rad seems to flow. Bled air out the plug. After bleeding air out starts spitting water out bleed plug hole and boiling sound from engine with rad cap off. Spouse said gauge was staying at 5/8 instead of normal 3/8 . replace water pump or thermostat ???

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    • #989772
      Nightflyr *Richard Kirshy
      Participant

        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

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