Question about Dodge Caravan

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1985 dodge caravan 3 spd auto trans . there is a module in the front side of the transmission that has 4 pin plug in. the connecting wire is sagging a little and .... Suddenly I lost all but low gear and reverse. Does this module have anything to do with this?

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The module is most likely an electronic speed sensor. I doubt that it is to blame for the shifting failure.

Low and reverse gear sometimes share an adjusting band that would explain why they both still work. As for why the other foward gears aren't engaging here are my suggestions.

Make sure the fluid level is good.
Make sure the vacuum line is connected to the shift modulator if applicable.
Make sure tha the shift cable is correctly actuating the shift selector.
Drain the fluid, replace the filter and clean out the pan, install a new pan gasket reinstall the pan and fill with fresh fluid.

Beyond these procedures I suggest that you have it checked out by a technician.

Posted on Mar 21, 2011

  • lk032767 Mar 21, 2011

    this module lays rite in the direction of travel and the connecting wires are not really out of the way. if that come unplugged or dirty inside the socket

  • John
    John Mar 22, 2011

    I looked at wiring diagrams for your van, and the only component that matched your description is a speed sensor module. I still don't believe that a fault with that module would cause a loss of foward gears engagement. If you suspect a bad connection to the module may be the problem the only sure way to test the theory is to make sure the connection is good, and if not repair it.

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