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Thermostat/coolant code keeps coming back on

Discussion in 'Wrangler JK (2007-2017)' started by RokStar, Mar 25, 2017.

  1. Mar 25, 2017 at 9:59 AM
    #1
    RokStar

    RokStar [OP] New Member

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    Hey All, Good to be here and see so many great posts. I have a 2013 Sport Unlimited with 79k on it. Great vehicle, dual tops. Original tires (SRA's) lasted me 70k and I have never had to do anything mechanically to this Jeep. Recently my engine light has come on. I had the code tested and it came back with thermostat for coolant. I've cleared the code three times but then in 4-5 days it comes on again. The mechanic said just watch the engine temperature so that it doesn't get too "hot." Also if it flashes, pull over and get it to a garage. A long story here but I love my "baby" and I want to make sure from you experts that it is ok to drive under the advise I have above? I think in the summer it may be an issue but right now the thermostat meter on the dash never goes above half way. Thoughts? I appreciate it!
     
  2. Mar 26, 2017 at 7:47 PM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine Moderator

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    A few Jeeps have had casting sand left in the cooling tracks in the engine, and over flow. Might not hurt to have the cooling system flushed.
     
    OFFGRID likes this.
  3. Mar 26, 2017 at 7:47 PM
    #3
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine Moderator

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    Don't panick over my comment, its not as big of an issue as it may seem.:jeepwave:
     
  4. Mar 27, 2017 at 6:44 AM
    #4
    OFFGRID

    OFFGRID Well-Known Member

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    If youre going to flush the cooling system, you might as well change out the thermostat. They are cheap enough, unless of course you really mean the temperature sensor; if that is acting up it can affect other areas of how the Jeep runs i.e. poor fuel mileage, running too rich or too lean etc.
     
    chris4x4 likes this.
  5. Mar 27, 2017 at 6:42 PM
    #5
    Jeeptrail

    Jeeptrail Member

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    At 79K miles, The codes indicate probably time for a flush, replacement thermostat and coolant. Don't wait for the hot summer and an overheating engine.
     
  6. Mar 28, 2017 at 7:14 PM
    #6
    C2T

    C2T Well-Known Member

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    Might just be the sensor.... just a thought.
     
  7. Apr 8, 2017 at 10:29 AM
    #7
    K6puppy

    K6puppy Well-Known Member

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    Hi if you have a you need to replace of P0128 you need to replace thermostat and flush cooling system you should fix your problem if you have any other codes please post and will help you get to bottom of your problem
     
    chris4x4 likes this.

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