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C13 in 2004 Peterbilt 379 low oil pressure warning beeper

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by gemtrucker, May 30, 2024.

  1. May 30, 2024 #1
    gemtrucker

    gemtrucker Bobtail Member

    13
    2
    Apr 9, 2015
    abbeville, la
    0
    Hey Folks,
    my driver ran the truck 2 gallons low on oil. C13, He did check it when the beeper went off. got it topped off, engine still sounds good, pressure is good, and oil temperature is still good, never ran hot. The truck beeps and the idiot light comes on when he is under a load. I am thinking the low oil pressure sensor needs changing. The sensor is on order. Which is the fuse for the buzzer so he can use the truck over the weekend until the new switch comes in?
     
    gemtrucker, May 30, 2024
    gemtrucker, May 30, 2024
    #1
    blairandgretchen Thanks this.
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  3. May 30, 2024 #2
    blairandgretchen

    blairandgretchen Road Train Member

    13,376
    71,892
    Dec 9, 2011
    South west Missouri
    0
    Fire the driver.

    If not - have driver check oil again to ensure it is not 2 gallons low when the buzzer starts.

    If oil is full and buzzer sounds, replace low oil sensor.

    If sensor is unavailable, find one anyway.

    Running the truck without SEL warning systems in place is a risky idea at best.
     
    blairandgretchen, May 30, 2024
    blairandgretchen, May 30, 2024
    #2
    FLHT Thanks this.
  4. May 31, 2024 #3
    BoxCarKidd

    BoxCarKidd Road Train Member

    4,466
    6,504
    Aug 26, 2014
    0
    Maybe remove the drain plug and check for scrap metal. You do not have to dump all the oil.
     
    BoxCarKidd, May 31, 2024
    BoxCarKidd, May 31, 2024
    #3
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