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  1. M

    Ford Windstar Tranny won't stay in Overdrive

    Is it an NGS (New Generation Star) tester?
  2. M

    Ford Windstar Tranny won't stay in Overdrive

    Thanks for the reply! You know that old joke about telling the doctor that it hurts when i do this... The doctor says, "well, don't do that!" We have got a bit more information about the trigger condition for the problem on our van. It seems that if the accelerator is to the floor and you...
  3. M

    Ford Windstar Tranny won't stay in Overdrive

    Identical Problem I have exactly the same problem on 1999 Ford Windstar, 3.8L. There is no sense describing anything more as you have described the problem perfectly. I'm afraid it is a worn overdrive servo but am holding out hope that it might be a bad solenoid valve or sensor. Did you ever...