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6.4 Hemi Thermostat

Discussion in 'Heavy Duty' started by Croz, Jun 25, 2019.

  1. three D

    three D Junior Member

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    I flushed the heater core about 20 times about a 2 gallons each time into a bucket and flakes of junk every time. my heater is working better still a not that warm on the drivers side. 2014 2500 6.4 105000 miles


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    OCDTech likes this.
  2. OCDTech

    OCDTech Senior Member Supporting Member

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    105,000. And the manual says all good til 150,000. Empty promises.
     
  3. three D

    three D Junior Member

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    I already did the heater core in 8/18 It had a leak and yes it a big job here is a pic when I almost had it all the way out

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  4. 2003F350

    2003F350 Senior Member

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    It sounds like you're having issues with the heater blend doors, not so much your cooling system.

    I had a '98 Grand Prix with dual climate, and when the blend door motors took a crap the car wouldn't get cold in the summer unless I had the passenger side cranked way down.

    I had a '99 Ford that lost the servo for the temperature blend door. It finally just stuck on whatever temp it was at. Replacing it wasn't too bad.
     
  5. 68PowerWagon

    68PowerWagon Senior Member

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    If when you adjust the temp & you can hear the doors moving, & hear a different sound of air rushing out when doing so, is that a good indication that the doors are working properly? I have already flushed my system but it didn't do any good. I have not done a flush just on the heater core itself. I may do that when warmer weather allows.
     
  6. zbiggboy1

    zbiggboy1 Junior Member

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    my ‘19 2500 HD has AGS
     
  7. three D

    three D Junior Member

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    yes the temp changes and the noise
     

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