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Thread: upshift light... whats it for in an auto?

  1. #1
    Join Date
    Apr 2002
    Location
    New York
    Posts
    174

    upshift light... whats it for in an auto?

    well i got bored and punched it got to 90 and upshift light came on. left off the gas a bit and it shifted then i continued on to roughly 105 mph ... So what is this light for in an auto?


    thanks
    Last edited by sabre81; 06-23-2002 at 10:41 PM.

  2. #2
    Join Date
    Jun 2002
    Location
    Edmonton, AB, Canada
    Posts
    287

    z

    same as a stick, to tell you to shift....mine in third gear roughly comes on at 4000rpm...check your owners manual it gives a detailed explanation in fancy words of what exactly the light is telling you.

  3. #3
    jpaitala Guest
    It tells you to loosen up the gas pedal slightly so the Tranny can shift to OD and the way you go again.... The OD cannot engage while in full throttle, so the upshift light tells you to loosen up a little....

  4. #4
    Join Date
    Apr 2002
    Location
    NorCal
    Posts
    206
    Mine comes on at about 115mph, if I keep my foot planted the "check engine" light comes on somewhere past 120.

  5. #5
    Join Date
    Apr 2002
    Location
    St. Charles, MO
    Posts
    20,898
    It's a warning that is triggered by several sensors. After 20 seconds the EEC will pull timing then fuel to protect the engine.

    It is not intended to tell you when to shift, it's telling you to let off and allow the tranny to shift to reduce engine rpms.

    David
    1991 SC AOD 4.2..2.3 Whipple..........10.910 @ 125.61
    2016 SRT Challenger Hellcat...............707HP/650TQ

    My Garage

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