To idle or not idle while sitting in line to get loaded?

Discussion in 'Freightliner Forum' started by joseph1853, Nov 30, 2021.

  1. circle h

    circle h Light Load Member

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    Oct 22, 2020
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    BTW that was in the cummins manual and my cruise switches are set up so I turn on the cruise and bump set twice and I idle at 1200
     
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  3. joseph1853

    joseph1853 Road Train Member

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    Dec 12, 2010
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    Wow, 1200 seems a bit high at least for my dd15. Typically on the highway, I try and keep the rpm's around 1400. Seems to be the sweet spot on these engines. When I idle I typically idle at around 700 to 900.
     
  4. joseph1853

    joseph1853 Road Train Member

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    Yeah, I looked at the manual again and under-engine operation it said 900 should be good if you have to idle that is.
     
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