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Thread: 3.6L V6 Thermostat Housing Replacement

  1. #21
    Nothing but a Thing scull20's Avatar
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    Quote Originally Posted by Ddays View Post
    First time I saw this Ryan - great write up. You need to go back & put your PE stamp on those diagrams now!
    I'll save that for the next write-up lol!
    The build of "Equinso-Ocha", aka White Devil:
    http://wayalife.com/showthread.php?3...White-Devil%29

  2. #22
    Hooked atrollip's Avatar
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    Very nicely done write up. Thank you, il be using this in a week or so.

    Sent from my SM-N920C using WAYALIFE mobile app

  3. #23
    Fresh Catch
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    Took 20 min to do this job thanks to the great details. Thank you!


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  4. #24
    Fresh Catch
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    Engine Still Overheating

    Ryan,

    Great write-up, you made it easy to swap out my thermostat. I guess it's going to become a process of elimination for me however, because my 2016 JKU is still overheating. I had pretty much the same symptoms that you did: empty reservoir bottle, low coolant level, no visible leaking. My temp gauge hit the red line after less than 5 minutes of driving on Friday. I opened the hood and saw that my radiator cap was popped and coolant had sprayed around the engine. I was uphill of our house so I let the engine cool off and coasted most of the way home.

    I was sure that my problem was a stuck thermostat, but after completing all your steps, I ran the car for 10 minutes, and the fan never turned on. The temp gauge stayed in the middle until I turned off the heater. After I turned off the heater, the fan kicked on but within a couple minutes the temperature gauge was heading for the red line again.

    I'm temporarily living in El Salvador, so trying to do as much repair work as I can by myself. If anyone has any ideas, I'd like to see what else I can do. There aren't very many Wranglers here, so I think most local shops wouldn't know much about Jeeps.

    Appreciate any assistance.

  5. #25
    Addict Ddays's Avatar
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    Quote Originally Posted by mcmahelpa View Post
    Ryan,

    Great write-up, you made it easy to swap out my thermostat. I guess it's going to become a process of elimination for me however, because my 2016 JKU is still overheating. I had pretty much the same symptoms that you did: empty reservoir bottle, low coolant level, no visible leaking. My temp gauge hit the red line after less than 5 minutes of driving on Friday. I opened the hood and saw that my radiator cap was popped and coolant had sprayed around the engine. I was uphill of our house so I let the engine cool off and coasted most of the way home.

    I was sure that my problem was a stuck thermostat, but after completing all your steps, I ran the car for 10 minutes, and the fan never turned on. The temp gauge stayed in the middle until I turned off the heater. After I turned off the heater, the fan kicked on but within a couple minutes the temperature gauge was heading for the red line again.

    I'm temporarily living in El Salvador, so trying to do as much repair work as I can by myself. If anyone has any ideas, I'd like to see what else I can do. There aren't very many Wranglers here, so I think most local shops wouldn't know much about Jeeps.

    Appreciate any assistance.
    Exactly the same situation I had with my housing. The leak was extremely small - it really didnt even look like much. But it didnt let the system build pressure so it couldn't work properly. My fan also did not come on. New housing and I was back in business.

  6. #26
    Nothing but a Thing scull20's Avatar
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    Quote Originally Posted by mcmahelpa View Post
    Ryan,

    Great write-up, you made it easy to swap out my thermostat. I guess it's going to become a process of elimination for me however, because my 2016 JKU is still overheating. I had pretty much the same symptoms that you did: empty reservoir bottle, low coolant level, no visible leaking. My temp gauge hit the red line after less than 5 minutes of driving on Friday. I opened the hood and saw that my radiator cap was popped and coolant had sprayed around the engine. I was uphill of our house so I let the engine cool off and coasted most of the way home.

    I was sure that my problem was a stuck thermostat, but after completing all your steps, I ran the car for 10 minutes, and the fan never turned on. The temp gauge stayed in the middle until I turned off the heater. After I turned off the heater, the fan kicked on but within a couple minutes the temperature gauge was heading for the red line again.

    I'm temporarily living in El Salvador, so trying to do as much repair work as I can by myself. If anyone has any ideas, I'd like to see what else I can do. There aren't very many Wranglers here, so I think most local shops wouldn't know much about Jeeps.

    Appreciate any assistance.
    Glad the write-up served you well.

    Are you sure that the system was completely filled with coolant (this took a few cycles of getting up to operating temp and letting it completely cool, then adding more coolant to the rad to top it off after it was cool). Also, are you sure the cap was properly twisted onto the radiator? It may be worth replacing the cap itself with a new one in the meantime. Make sure your temps are cycling properly with the tstat opening and closing and fan kicking on/off prior to driving, other than say around the block. You don't want to get stranded or do any damage from overheating. Last but not least, you may also have a small leak in your radiator that you didn't realize was there.

    I'm willing to bet that you didn't have enough coolant in the system initially.
    The build of "Equinso-Ocha", aka White Devil:
    http://wayalife.com/showthread.php?3...White-Devil%29

  7. #27
    Hooked Hangemhigh1's Avatar
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    Many thanks for this write up. It helps tremendously. There was one thing that I didn't see covered. I experienced the check engine light did not go off on its own. I checked the diagnostics ( ignition key fwd and back 3 times) and there was no longer a code yet the check engine light stayed lit. At that point I just cleared the light by disconnecting the battery. I hope that was the end of this issue. Thank you again......time for that Beer CHEERS!


    Sent from my iPad using WAYALIFE mobile app

  8. #28
    Nothing but a Thing scull20's Avatar
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    I never had a CEL prior to or after replacing the housing. You may have an underlying issue that popped up.
    The build of "Equinso-Ocha", aka White Devil:
    http://wayalife.com/showthread.php?3...White-Devil%29

  9. #29
    Knows a Thing or Two pop2tu's Avatar
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    I will be doing this next weekend. Stealership says it is not covered under bumper to bumper lifetime warranty! Curious as to how many people have had this same issue.

  10. #30
    Been Around the Block
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    Quote Originally Posted by pop2tu View Post
    I will be doing this next weekend. Stealership says it is not covered under bumper to bumper lifetime warranty! Curious as to how many people have had this same issue.
    I would bring it to another dealership... unless there's evident physical damage. Otherwise there's enough of us who've had it fail for them to not have any issue replacing it under warranty.

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