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1991 Acura Legend Question: Transmission



Pator, 3.2L V6, Tempe, AZ, December 11, 2009, 05:16

D4 light flashs and speedometer falls to zero miles per hour
than back up to speed.

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  • Medium-star Best Answer
    patrick mannion from Greg Solow's Engine Room, December 11, 2009, 10:58

    The D$ light flashing indicates an automatic transmission fault but yo are lucky in that the Vehicle Speed Sensor (VSS) is a key sensor input for transmission controls. It operates the speedometer and is necessary fro cruise control as well. Common failure relatively easy to change and relatively inexpensive part (compared to a transmission failure).

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    Visitor, July 18, 2010, 15:08

    my car is doing the samething the D4 light is flashing and speedo problems and from reading all the information I think its the VSS, my question is can I do it myself and what else should be done at the same time. Thank you.

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  • Answer #2

    November 04, 2010, 13:16

    my legend unless up to high speed will not switch gears ....also will not go into gear unless in neutral first

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