Series 60 14.0 jakes

Discussion in 'Ask An Owner Operator' started by supergreatguy, Mar 19, 2022.

  1. Mar 19, 2022 #1
    supergreatguy

    supergreatguy Road Train Member

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    When I switch to high the check engine light will come on, when I switch to low jakes no check engine light.

    on high the engine is braking fine, but the light is unsettling.

    any experience?

    If the (selinoid?) is bad would the engine brakes still work?
     
    supergreatguy, Mar 19, 2022
    supergreatguy, Mar 19, 2022
    #1
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  3. Mar 20, 2022 #2
    rollin coal

    rollin coal Road Train Member

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    In your shoes I'd stop by a Clarke Detroit or some similar and get that figured out.
     
    rollin coal, Mar 20, 2022
    rollin coal, Mar 20, 2022
    #2
    Coffey Thanks this.
  4. Mar 21, 2022 #3
    supergreatguy

    supergreatguy Road Train Member

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    what do you think it could be?
     
    supergreatguy, Mar 21, 2022
    supergreatguy, Mar 21, 2022
    #3
  5. Mar 21, 2022 #4
    rollin coal

    rollin coal Road Train Member

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    Haven't the slightest clue. These kind of things very seldom have a solution from an internet forum. You need to take it to a good shop so somebody can look at it. Me personally I would go to a Detroit only shop.
     
    rollin coal, Mar 21, 2022
    rollin coal, Mar 21, 2022
    #4
  7. Mar 21, 2022 #5
    supergreatguy

    supergreatguy Road Train Member

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    Reducing everything, the engine runs fine when switched on, and engine brakes fine when switched on. Check engine light immediately goes off when switch is off or in low jakes. I’m going to assume it’s the solenoids.
     
    supergreatguy, Mar 21, 2022
    supergreatguy, Mar 21, 2022
    #5
  8. Mar 21, 2022 #6
    bad-luck

    bad-luck Road Train Member

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    You most likely have a short or open circuit in the engine wiring harness or in one of the Jake solenoids. The reason the light only comes on when you operate them is because thats when they are being given power to work.
     
    bad-luck, Mar 21, 2022
    bad-luck, Mar 21, 2022
    #6
    supergreatguy Thanks this.
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