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  1. Join Date
    Nov 2004
    Posts
    115
    #1
    hello,

    ano ba ang normal RPM kapag naka idle?

    kasi ung sakin pag walang aircon one line before mag 1. pag may aircon, halos nasa one na.

    parang masyadong mataas ata? pwede ko ba adjust to ng mag isa?

    thanks!

  2. Join Date
    Jun 2005
    Posts
    113
    #2
    Idle speed may vary between different engines but the most common speed is around 750 rpm. Load-compensated idle speed, like when the a/c is operated, may be a little higher at around 900 rpm.

    Diesels have an idle adjustment knob or screw on the fuel pump/distributor and may have a solenoid activated idle up actuator.

    Sorry I'm not intimately familiar with the Pajero engine (4m41?) so I can't give you the exact details.

  3. Join Date
    Nov 2004
    Posts
    115
    #3
    thanks shadetree! i guess i have to bring it to a mechanic first and i'll watch him do it.

    the engine is 4D56 btw..

  4. Join Date
    Jun 2004
    Posts
    476
    #4
    Lifted from the 4d56 Workshop Manual

    1. Turn A/C and lamps OFF
    - Inspect and adjust at no load
    2. Warm engine until idle stabilizes
    3. Confirm idle speed is at prescribed value
    - 750 plus/minus 100 r/min

    Hope this helps

  5. Join Date
    Nov 2003
    Posts
    3,849
    #5
    yeah, 750-800rpm is normal... if umaabot na ng 1k with a/c that's a bit high

pajero 2500 normal rpm pag naka idle?