2014 paccar MX13 Oil pressure sensor problem

Discussion in 'Peterbilt Forum' started by Jonathansalgado99, Feb 15, 2025.

  1. Jonathansalgado99

    Jonathansalgado99 Bobtail Member

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    Feb 15, 2025
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    I am running into this problem where my oil pressure sensor is working for a bit then it goes up at 100 PSI and doesn’t go down from there. I changed the oil pressure sensor and the oil temp pressure sensor. and still no help. Any help will kindly be appreciated
     
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  3. Arctic_fox

    Arctic_fox Experienced mx13 execrator

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    Are you sure its actully the sensor and not an issue with the engine itself? If you have swapped the sensors it seems more like a problem in the guts then 2 sets of sensors being wrong.
     
  4. ducnut

    ducnut Road Train Member

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    MX13 has an electronically-controlled, variable oil pressure system. When it fails, you get maximum oil pressure, all the time. Mine is doing the same thing and I don’t yet know what component fails and causes it. I have an appointment, 2/28.
     
  5. Jonathansalgado99

    Jonathansalgado99 Bobtail Member

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    Feb 15, 2025
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    Heard that. Let me know on this or text my number what the appointment diagnosis is i am very interested 239-443-9892 ~Jon
     
    ducnut Thanks this.
  6. ducnut

    ducnut Road Train Member

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    I never made it into the dealer, 2/28. This morning, the oil pressure dropped to normal and the wrench light went off. Afterward, the oil pressure bounced up a couple times, then, stayed normal. I can’t explain it other than to say another PACCAR doing PACCAR things.
     
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