Early shift

Discussion in '9th Generation F-Series : 1992 - 1996' started by Nathan, Dec 7, 2016.

  1. Nathan

    Nathan Junior Member

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    So recently picked up a 92 f-150 302 with the E40D trans. I've been having issues with it shifting too early. If I come off of a dead stop under full throttle it shifts automatically around 3500. And if I full accelerate around 50-60 it also will not downshift. Any ideas ? I added about half a quart of trans fluid yesterday fixed it on the drive home but started acting up again today.
     
  2. thesman727

    thesman727 Full Access Member

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    Swap it for a manual

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  3. Roush PSD Interceptor

    Roush PSD Interceptor Straight Piped Diesel Staff Member

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    I would do a complete drain and change the transmission filter.
    Only the PO knows when it was last done if ever.

    Look for debris in the pan and
    Dark "dirt" on the magnet if so equipped.
    This will be metal dust from the discs, alot of dark material equals high wear in the transmission.

    Larger debris on the magnet or in the bottom of the pan means more severe damage.

    The shifting issue can be caused by shifting solenoids or the PCM.

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