$2 A/C Thermistor fix?

Discussion in 'International Forum' started by KeithT1967, Sep 26, 2015.

  1. earnies2

    earnies2 Medium Load Member

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    May 17, 2012
    Dedham, MA.
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    Can a 2009 be converted to a 2011 system and not use thermosters?
     
    Last edited: Aug 28, 2021
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  3. Inderjit

    Inderjit Light Load Member

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    Sep 17, 2017
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    The early thermisters had wires on the tiny thermister sensor
    on the inside of the A/C system molded in plastic and the
    terminals on the outside of the plastic. Over time refrigerant
    would seep out around the terminals creating a slow leak.
    The newer thermisters are made differently and do not leak.
    Once they are updated and the connectors replaced they don't
    seem to give a problem.
     
  4. Truckingbumblebee

    Truckingbumblebee Bobtail Member

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  5. Heavyd

    Heavyd Road Train Member

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    It's a different heater box and layout all together. It would all be custom work and therefore too cost prohibitive. Not something we do at the dealer level.
     
    earnies2 Thanks this.
  6. earnies2

    earnies2 Medium Load Member

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    May 17, 2012
    Dedham, MA.
    0
    I have gon through 3 sets of thermosters this year its frustrating....
    I just got a computer with insite and Dimond logic on it I have no clue how to run either but I'll learn. I remember reading a post about a green and grey wires on the thermosters I don't recall any colors on the replacement plugs.
    Could that be part of my problem?
     
  7. Heavyd

    Heavyd Road Train Member

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    Well first of all, I hope you are getting warranty on the parts. Thermistors don't last very long, but they don't fail like that either. There was a bad batch of them years ago so maybe someone is selling off very old stock to you. If you buy a set, they come with new terminals. They are really small and bad or broken connections here cause a lot of problems. The wire takes a sharp bend and weather sealing isn't the best so corrosion can easily set it. So using the proper crimping tooling and getting a good connection is very important for reliable operation. Polarity at the sensor doesn't matter. If you aren't installing this style, then you must be using something aftermarket I have never seen before. The green wire is the signal return to the body controller, the grey wire is basically just a ground.
     
    earnies2 Thanks this.
  8. earnies2

    earnies2 Medium Load Member

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    May 17, 2012
    Dedham, MA.
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    So if polity isn't an issue than I can only summarize that I'm getting old stock. I have been purchasing them through parts geek. Whare do you susjest I purchase them from.
    Thanks for your reply I appreciate your help
     
  9. Heavyd

    Heavyd Road Train Member

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    Feb 4, 2009
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