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348 Speedometer

Discussion in 'Technical Q&A' started by jm348ts, Jan 26, 2012.

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  1. jm348ts

    jm348ts Karting

    Oct 22, 2009
    95
    New York
    Full Name:
    John Moy
    #1 jm348ts, Jan 26, 2012
    My speedometer does not work so I took the dash pod off and cleaned the printed circuit behind the speedometer. I then disconnected the pulse sensor near the rear shock. Nothing happened with either. Is there another test before I replace the pulse sensor? Thanks in advance for your help.
     
  2. Miltonian

    Miltonian F1 Veteran

    Dec 11, 2002
    5,966
    Milton, Wash.
    Full Name:
    Jeff B.
    #2 Miltonian, Jan 26, 2012
    Have you checked the twist connector for the wiring harness, near the top of the left rear shock tower? The two wires that serve the pulse sensor run through this harness, and if the twist connector is loose or damaged, it may cause a problem with the speedometer.

    I was curious to know if this suggestion would have helped the new member with the Mondial T who posted last week, but he hasn't provided any feedback.
     
  3. jm348ts

    jm348ts Karting

    Oct 22, 2009
    95
    New York
    Full Name:
    John Moy
    #3 jm348ts, Jan 29, 2012
    Thanks Miltonian,
    I did check that but forgot to post that I did. Actually I did that while resolving the O2 sensor codes that you helped me with. Glad to see that you are still on FC.
    John
     
  4. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,614
    The Brickyard
    Full Name:
    The Bad Guy
    #4 ernie, Jan 29, 2012
    Well if the connections on the back of ther speedo are good, and the twist connector neerthe charcoal canister are ok, then the only thing left has got to be the sender on the gearbox.
     
  5. jm348ts

    jm348ts Karting

    Oct 22, 2009
    95
    New York
    Full Name:
    John Moy
    #5 jm348ts, Jan 29, 2012
    Thanks Ernie
     

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