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Detroit 14L high idle

Discussion in 'Experienced Truckers' Advice' started by STR8STAKZ, Apr 8, 2018.

  1. Apr 8, 2018 #1
    STR8STAKZ

    STR8STAKZ Bobtail Member

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    Not sure if this may be an issue or not. This is the first Detroit I have ever owned or even operated. When I first start the truck (cold engine) the rpm jumps straight up to 900 and stays there for a few minutes before it gradually goes down to where it should 600ish. With the air pressure being low in the morning it may be some kind of automatic thing to build air pressure faster I'm not sure. Any ideas?
     
    STR8STAKZ, Apr 8, 2018
    STR8STAKZ, Apr 8, 2018
    #1
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  3. Apr 8, 2018 #2
    kwswan

    kwswan Road Train Member

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    It's normal,I have 3 of them that do the same thing.
     
    kwswan, Apr 8, 2018
    kwswan, Apr 8, 2018
    #2
    swaan, Hulld, Bean Jr. and 1 other person Thank this.
  4. Apr 8, 2018 #3
    Bean Jr.

    Bean Jr. Road Train Member

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    They automatically idle fast when cold. It's to warm it up faster.
     
    Bean Jr., Apr 8, 2018
    Bean Jr., Apr 8, 2018
    #3
    swaan and Hulld Thank this.
  5. Apr 8, 2018 #4
    swaan

    swaan Road Train Member

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    BC canada
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    It's doing what it's designed to do.
    Normal. Aids in warm up time.
     
    swaan, Apr 8, 2018
    swaan, Apr 8, 2018
    #4
    Hulld Thanks this.
  7. Apr 8, 2018 #5
    STR8STAKZ

    STR8STAKZ Bobtail Member

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    Cool deal thanks guys. I figured it was normal, but having no experience with Detroit's just wanted to make sure
     
    STR8STAKZ, Apr 8, 2018
    STR8STAKZ, Apr 8, 2018
    #5
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