C15 Engine fan, at what temperature does it come on?

Discussion in 'Ask An Owner Operator' started by AL617, Sep 25, 2022.

  1. AL617

    AL617 Bobtail Member

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    What’s going on guys , I have a c15 mxs and my question is at what oil temp does the engine fan engages at?
     
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  3. lester

    lester Road Train Member

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    Not sure it really matters. Oil temp on the acert cats is a computer generated number based off water temp, engine load and such. I'm 98% sure of that. Don't believe me? Look in your oil pan for a temp sensor
     
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  4. Catmando

    Catmando Road Train Member

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    The fan engagement is based on the engine coolant temperature.. engine oil temperature is Irrelevant
     
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  5. ‘Olhand

    ‘Olhand Cantankerous Crusty

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    IMHO accerts run too #### hot...normal op temp is approximately 195....ECM set to kick fan at 208 if memory serves....heads toast by 225
     
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  6. cke

    cke Road Train Member

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    My cat has a oil temp sensor.
     
  7. Lazer

    Lazer Heavy Load Member

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    Not sure on the acert’s, but on an ISM there is an oil pan sensor that feeds a gauge in the dash, and a sensor that feeds the ECM, that will trigger an engine shut-down if engine oil temp gets too high.
     
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  8. lester

    lester Road Train Member

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    Yeah what model cat?
    Think they all did up till acert
     
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  9. lester

    lester Road Train Member

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    Yeah I'm sure. But somewhere along the line cat did away with the sensor. It's just a computer generated number based off other things. I don't understand why
     
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  10. Magoo1968

    Magoo1968 Road Train Member

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    I’d be more worried if oil ran too cool I don’t think a diesel could get oil hot enough to break down .. as long as oil pressure is fine at your operating temperature your fine.. cold oil doesn’t burn off moisture and it turn acidic..
     
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  11. Ridgeline

    Ridgeline Road Train Member

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    It doesn't trigger the fan, coolant temp only.
     
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