M46 overdrive questions 1986 245

Discussion in 'Volvo 240' started by e, Nov 19, 2005.

  1. e

    e Guest

    1. Is there a single lead to instrument panel for overdrive light? Since I
    installed a tach the "5" light no longer comes on.

    2. Where is the overdrive solenoid specifically located and does it have
    any distinguishing markings? Is it an easy DIY replacement project?
    e, Nov 19, 2005
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  2. e

    Duane Guest

    1. Is there a single lead to instrument panel for overdrive light? Since
    In the 86, yes. A yellow wire comes from the relay socket, changes to an
    orange wire and enters the instrument cluster via the round multi-pin
    connector on the rear of the cluster.
    On the Left side of the Overdrive behind the trans with two wires sticking
    DIY with a special wrench that allows clearance between the body tunnel and
    the side of the Overdrive unit.

    But why replace the solenoid? Was the overdrive working before you
    installed the tach? If so, then your problem is with something that
    happened when you had the cluster out to install the tach.

    If it was not working prior to the tach install, something else is most
    likely the problem. A blown or corroded fuse, a bad 4th gear switch on the
    trans, loose or dirty terminals.

    Where your problem with the non working OD depends upon how the dash light
    reacted to the button on the shifter.

    If the dash light came on with the push of the button, and no OD,
    concentrate on the terminals and connections to the solenoid. The wires
    have a tendency to break inside the wire right at the terminal crimp and not
    separate at the insulation.

    If no dash light with the button push, the fuse, or the 4th gear switch on
    the top right side of the trans.

    Duane, Nov 19, 2005
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