High idle question...

Discussion in 'Peterbilt Forum' started by Pumpkin Oval Head, Sep 9, 2010.

  1. Sep 9, 2010 #1
    Pumpkin Oval Head

    Pumpkin Oval Head Road Train Member

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    I do not find that any of the 379 Petes I drive have a high idle switch. Is there a hidden switch somewhere I am missing? Or is there just not a high idle on these 379s? They are 05, 06 and 07 model years with 18 speeds and c15 motors.

    Thanks.
     
    Pumpkin Oval Head, Sep 9, 2010
    Pumpkin Oval Head, Sep 9, 2010
    #1
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  3. Sep 10, 2010 #2
    kwforage

    kwforage Road Train Member

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    Use the cruise control.
     
    kwforage, Sep 10, 2010
    kwforage, Sep 10, 2010
    #2
    Pumpkin Oval Head Thanks this.
  4. Sep 10, 2010 #3
    CondoCruiser

    CondoCruiser The Legend

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    Yeah, use the cruise. Turn it on and use the set/resume button to raise/lower it.

    You can also set your engine idle. Cruise off, repeatedly bump the set/resume button. At least my 09 387, that's the way it works. Let us know if it works on yours.
     
    CondoCruiser, Sep 10, 2010
    CondoCruiser, Sep 10, 2010
    #3
    Pumpkin Oval Head Thanks this.
  5. Sep 12, 2010 #4
    The Truckist

    The Truckist Medium Load Member

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    '07 Pete 379 ...same thing. Turn Cruise Control toggle OFF, then toggle the SET/RESUME DOWN to lower or UP to raise the idle. It'll move idle up or down about 25 r's at a whack. Mine's limited on the idle set high side to about 800 rpms but that's probably an adjustable parameter in the ECM.
     
    The Truckist, Sep 12, 2010
    The Truckist, Sep 12, 2010
    #4
    Pumpkin Oval Head Thanks this.
  7. Oct 31, 2010 #5
    Azzitude

    Azzitude Bobtail Member

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    Thats the setup for cummins, not CAT ..I think
     
    Azzitude, Oct 31, 2010
    Azzitude, Oct 31, 2010
    #5
  8. Oct 31, 2010 #6
    Chain Drive

    Chain Drive Medium Load Member

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    I usually just use the fuel peddle to raise the rpms to where I want them than just hit the set button
     
    Chain Drive, Oct 31, 2010
    Chain Drive, Oct 31, 2010
    #6
  9. Nov 4, 2010 #7
    doublew

    doublew Light Load Member

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    thats how my 95 pete works with a cat just turn the crusie on then idle up and then push the switch up to the set poistion and your done
     
    doublew, Nov 4, 2010
    doublew, Nov 4, 2010
    #7
  10. Nov 4, 2010 #8
    Pumpkin Oval Head

    Pumpkin Oval Head Road Train Member

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    Scranton PA
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    I have been driving some tender trucks with PTOs and have been using the fast idle to get the fertilizer unloaded....The Pete has switches to use to get it to go fast....huh??? Yep, it does.:biggrin_2558:

    Thanks again for your help.
     
    Pumpkin Oval Head, Nov 4, 2010
    Pumpkin Oval Head, Nov 4, 2010
    #8
  11. Feb 8, 2021 #10
    DreamChaser850

    DreamChaser850 Bobtail Member

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    I just found a 3rd switch after being in this truck for 4 years...it a 2000 379 w/99 n14...seems to be some kind of idle control. Almost works like the set/resume switch while idling. Can use it to set idle from 550 to 750rpms...even works when cruise is off. Guess I'll start using it for idling ‍♂️
     
    DreamChaser850, Feb 8, 2021
    DreamChaser850, Feb 8, 2021
    #10
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