Truck rising RPMs on idle every 4 hours to clean DPF? Is that normal?

Discussion in 'Volvo Forum' started by Pawel-pl, Jan 7, 2022.

  1. Pawel-pl

    Pawel-pl Light Load Member

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    Volvo D13 vnl 780

    Because of the cold weather in AB and SK my truck stays on idle overnight. I noticed that each 4 hours engine RPMs go up and it looks like truck is heating up exhaust to clean DPF. Soot level is going down little bit too. After about 30 minutes it turns off, No messages and codes show on the truck and truck works great.

    Im just wondering is this every 4 hour thing normal or if you can change some settings in ECU for this?
     
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  3. dchawk81

    dchawk81 Light Load Member

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    Sounds like it's just trying to Regen.
     
  4. Pawel-pl

    Pawel-pl Light Load Member

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    Yeah I know she clears the soot little bit, and soot is very low all the time. Im just wondering if this is something that you can adjust in settings
     
  5. dchawk81

    dchawk81 Light Load Member

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    Why would you want to? It's doing what it's supposed to do as an emissions truck.
     
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  6. Pawel-pl

    Pawel-pl Light Load Member

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    Curiosity :D
    Just wanna know what options you might have in this settings. If they exist at all
     
  7. dchawk81

    dchawk81 Light Load Member

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    I like to be educated but when it comes to emissions I figure Mack/Volvo knows what they're doing. I also have a Mack, FWIW.
     
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  8. supersnackbar

    supersnackbar Road Train Member

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    My Mack (which is part of Volvo) with an MP8 would do something similar.
     
  9. Magoo1968

    Magoo1968 Heavy Load Member

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    Why mess with a perfectly operating dpf system.. idling in the extreme cold requires extra heat to clear soot . I know it’s annoying in extreme cold but shutting down due to plugged dpf is far more annoying.
     
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  10. Brandt

    Brandt Road Train Member

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    Freightliner with Detroit engine does parked Regen every 6 hours of idle time
     
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