International 9900 Fan turning on a lot

Discussion in 'International Forum' started by Dadetrucking305, May 10, 2021.

  1. Dadetrucking305

    Dadetrucking305 Light Load Member

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    The fan on my 9900 is kicking on a lot more frequently that it did in the past.What can be causing this? TIA
     
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  3. Dave1837

    Dave1837 Heavy Load Member

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  4. Dadetrucking305

    Dadetrucking305 Light Load Member

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    Cummins ISX15 CM870
     
  5. Smellfunny

    Smellfunny Road Train Member

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    Possibly A/C high pressure is causing it to come on. With the higher temps outside the A/C pressure will go up quickly. How often is it coming on?
     
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  6. Dadetrucking305

    Dadetrucking305 Light Load Member

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    I haven’t timed it yet but it is a lot more frequent than it used to be.
     
  7. ChuckMartel

    ChuckMartel Light Load Member

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    Does it reach @ 210F and turn on or at any operating temp?
     
  8. Dadetrucking305

    Dadetrucking305 Light Load Member

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    It never reaches 210
     
  9. Heavyd

    Heavyd Road Train Member

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  10. Dadetrucking305

    Dadetrucking305 Light Load Member

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    So it is normal?
     
  11. God prefers Diesels

    God prefers Diesels Road Train Member

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    Yes. If you're running defrost, or have your A/C button activated. The A/C condenser has to have airflow going over it. So if you aren't moving, the fan has to cycle practically non stop.
     
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