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Thread: 2013 Heater not hot

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    Basic Member blevans's Avatar

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    2013 Heater not hot

    I have a 2013 2500, 165k miles and the heater never gets hot, warm but not like it should.

    I've flushed the core with radiator cleaner and CLR, (minimal trash removed).

    Replaced both blend doors located behind the radio/center console (no change).

    Has anyone else had this issue?

    I believe there is another blend door behind the glove box area, could that be the cause?

    I'm trying to stay away from replacing the core.


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    WE WILL STAND! IGOTACUMMINS's Avatar

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    Re: 2013 Heater not hot

    @blevans it sounds like the heater core has gone bad.

    "The grass is greener where you water it"


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    I WILL STAND! AK Bob's Avatar

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    Re: 2013 Heater not hot

    Agreed most likely the core is plugged.

    I also attached information to rule out any other possible causes.

    If you have access to a high end scanner like AutoEnginuity with Chrysler enhancement.

    I can send you the DTC-Based Trouble Codes also.

    Heater Performance.pdf

    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, 50 Gallon auxiliary fuel tank.

    Sent from my iPad using Tapatalk

    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, Cold Air Intake, City Diesel Actuator and 50 Gallon Aux Fuel Tank.

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