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Why do 2.7's idle at like 1600 rpm when you first start them?

Discussion in '4 Cylinder' started by 11Taco2.7, Jul 29, 2011.

  1. 11Taco2.7

    11Taco2.7 [OP] Active Member

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    Whenever I am starting cold my 2.7 idles at roughly 1600 rpm for like 20-30 seconds then slowly drops. I am assuming it has to do with warming the engine up, but I thought you didnt really need to let modern engines warm up.
     
  2. chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, lots of buttons, and yellow flashing lights on the dash.
    It helps oil pressure build more rapidly.
     
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