rough shifting '02 L100 w/ 41,000 mi

Discussion in 'Saturn L-series' started by Keith, Nov 9, 2004.

  1. Keith

    Keith Guest

    I am into month 3 of an intermittent shifting problem. 98% of the time
    shifting is smooth, the problem arises usually when the car is warmed
    up. Symptoms of the poor shifting will be a delay past the usual rpm
    point of shifting with a "slamming type kick in the pants" changing of
    The dealer has changed the input speed sensor and the pressure control
    solenoid twice. The difficult aspect of all this is I spend days
    waiting for the problem to duplicate for the mechanic (he drives my
    car) where he will then attempt a fix. The last time I was told they
    will call Tech Support for help. They phoned me yesterday to tell me
    they were still driving/waiting for the problem to duplicate again, my
    thought was why? Well, the mechanic is obviously stumped.
    I Googled and found this:

    Does anyone have any suggestions? My patience is wearing thin.
    Keith, Nov 9, 2004
  2. Keith

    Brian Hurley Guest


    I am one of the posters that you found through Google. In my case there was
    a Code 1811 "Max Adapt and Long Shift Relearned TCM". They replaced the
    Control Pressure Valve, Transmission Oil Pump Shaft and reprogrammed the
    TCM. I have not had a problem since.

    Brian Hurley, Nov 9, 2004
  3. Keith

    Keith Guest

    Brian thanks for the input. Saturn called me back and said they had
    tech support involved. The lead mechanic was also in Spring hill for
    classes and was able to talk to engineers down there as well. One of
    the things to be done is for the problem to duplicate while hooked up
    to a portable diagnostic computer. That could take as long as a week
    or more to occur, meanwhile I'm driving a creaky loaner car with
    150,000 mi on it. They're really trying so I will be patient and see
    what evolves.

    Keith, Nov 10, 2004
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