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    liams's Avatar
    liams Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Feb 12, 2016, 04:31 PM
    No heat after replacing thermostat in Ford E-350
    My heater stopped working on my Ford E-350 super duty, V10. Replaced thermostat and changed fluids. My gauge in cab stays in same place indicating no up and down temp.. When turn on heater no heat comes out. What am I doing wrong?
    catonsville's Avatar
    catonsville Posts: 894, Reputation: 91
    Senior Member
    		  
    #2

    Feb 12, 2016, 05:55 PM
    Not sure. Possible, Thermostat in backwards, Water Pump not pumping, or Air Blockage.
    hkstroud's Avatar
    hkstroud Posts: 11,929, Reputation: 899
    Home Improvement & Construction Expert
    		  
    #3

    Feb 12, 2016, 05:58 PM
    Is the engine heating up?
    Let truck idle five minutes, feel radiator hoses.

    My gauge in cab stays in same place indicating no up and down temp.
    .
    Indicates defective sending unit if engine is actually heating up.

    When turn on heater no heat comes out.
    Possibly a blocked heater core or lines.
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #4

    Feb 13, 2016, 06:04 AM
    Reverse flush the heater core.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #5

    Feb 13, 2016, 01:33 PM
    Also make sure to bleed the air from the system.
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