Reving high at cold start

Discussion in 'General Motoring' started by John, Nov 15, 2003.

  1. John

    John Guest

    Hello again,

    Just curious, why would my 95 LS 2.2L auto rev high at intial startup when
    cold? Only started happening now that its cold outside. Does it when I
    leave for work in the am and leave for home in the pm, both times are cold.
    I dont touch the gas, just turn the key to acc for a couple seconds then
    start, engine will rev up to 3k rpm until I hit the gas, then after a couple
    seconds it goes to a "normal" cold-start rpm of 1500.
    I'm just concerned about having the rpms that high when it first starts with
    cold oil, etc.
     
    John, Nov 15, 2003
    #1
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  2. John

    Brian Guest

    This is the electonic fuel injections equivalent of a choke. The mixture
    and idle speed are richened to smoothe the engine until it reaches operating
    temps.
     
    Brian, Nov 15, 2003
    #2
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  3. John

    mac Guest

    normal. it needs slightly richer mixture when cold.
     
    mac, Nov 15, 2003
    #3
  4. John

    David Algie Guest

    David Algie, Nov 15, 2003
    #4
  5. John

    Tony Hwang Guest

    Hi, John
    How long have you been driving? Read owner's manual?
    Tony
     
    Tony Hwang, Nov 15, 2003
    #5
  6. John

    John Guest

    No CEL.
    Glad someone agrees that its too high.
     
    John, Nov 15, 2003
    #6
  7. John

    John Guest

    Hi Tony,
    Quite a while
    No, Haynes manual. But before I replied I checked the owner's manual and
    guess what?..........no mention of it.
    You should know better....

    Next?
     
    John, Nov 15, 2003
    #7
  8. John

    Gilles Gour Guest

    I confirm IT IS too high.
    Idle on my Legacy nerever goes higher than 1500 rpm at startup
    even on the coldest mornings. And they are often really
    cold here in Montreal.
     
    Gilles Gour, Nov 16, 2003
    #8
  9. John

    Edward Hayes Guest

    My 2000 Forester on a 50 degree F morning revs to ~1800 rpm and a tap on the
    peddle drops it to ~1000. My old Saab and Jeep did about the same. I see no
    problem IF you brother to tap and the rpm drops to 8-1100 rpm. eddie
     
    Edward Hayes, Nov 17, 2003
    #9
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