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Speedo - Speed sensor problem.

Discussion in '348/355' started by cheesehead, Aug 31, 2015.

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  1. cheesehead

    cheesehead Rookie

    Mar 18, 2015
    14
    #1 cheesehead, Aug 31, 2015
    I have a 1994 348 spider with a non functioning speedo. After checking the Ferrari chat archives. I have checked and cleaned the connections at the speedo, multi pin connector, and the speed sensor connection, and it still won't function. With the engine on or off the needle sits at 10 mph. I called Ricambi to order P/N 116987 Speed Sensor and was told it has been on backorder for two years. Does anybody know of an interchangeable part for replacement. or any other options?
    Thanks for any, and all help.
     
  2. Wade

    Wade Three Time F1 World Champ
    Owner

    Mar 31, 2006
    32,793
    East Central, FL
    Full Name:
    Wade O.
    #2 Wade, Aug 31, 2015
    I'm told, and I've read, that the 355 sensor is the same. Only the connectors are different. Not sure about which wire goes where yet since I haven't checked the schematics.
     
  3. cheesehead

    cheesehead Rookie

    Mar 18, 2015
    14
    #3 cheesehead, Aug 31, 2015
    Thanks for the response. I called Racambi and they said that was also on back order and unavailable.
     
  4. Wade

    Wade Three Time F1 World Champ
    Owner

    Mar 31, 2006
    32,793
    East Central, FL
    Full Name:
    Wade O.
    #4 Wade, Aug 31, 2015
    I recently bought one from the UK, low price too. But it did take about a week to receive.

    Can't remember where from but I'll look up my receipt this evening.
     
  5. cheesehead

    cheesehead Rookie

    Mar 18, 2015
    14
    #5 cheesehead, Aug 31, 2015
    Thanks Wade, so far I have come up with nothing.
     
  6. Wade

    Wade Three Time F1 World Champ
    Owner

    Mar 31, 2006
    32,793
    East Central, FL
    Full Name:
    Wade O.
    #6 Wade, Aug 31, 2015
  7. hjp

    hjp Formula Junior

    Feb 23, 2013
    591
    Kansas City, Mo.
    Full Name:
    Jerry Peterson
    #7 hjp, Aug 31, 2015
    Eurospares has them. Genuine Ferrari, brand new. I bought one for my 355 a few months ago. I paid a little under $200 but the exchange rate has gone up a bit since.
     
  8. Wade

    Wade Three Time F1 World Champ
    Owner

    Mar 31, 2006
    32,793
    East Central, FL
    Full Name:
    Wade O.
    #8 Wade, Aug 31, 2015
    Last edited by a moderator: Sep 7, 2017
    Okay, that's them. I paid $216 back in June but the sensor is on sale now. At the time, these guys were the only ones where the part wasn't listed as "back order" or similar.
    .
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  9. Wade

    Wade Three Time F1 World Champ
    Owner

    Mar 31, 2006
    32,793
    East Central, FL
    Full Name:
    Wade O.
    #9 Wade, Aug 31, 2015
    Last edited by a moderator: Sep 7, 2017
    Here's the new 355 pulse sensor that I bought from Scuderia Car Parts and a donated 348 sensor (thanks Phil).

    The used one was reported to have an intermittent electrical connection within the black connector itself, and why I cut it open.

    Other than the connector, the only difference is the yellow wire:
    • 348 = yellow/black
    • 355 only yellow

    The second wire is brown on both sensors.

    So, common sense to me is brown/brown and yellow/yellow/black.

    I just test drove the car and the speedometer is working as it should.
    .
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  10. tr512

    tr512 Formula 3

    Apr 12, 2007
    1,600
    canada burnaby bc
    Full Name:
    Michael
    #10 tr512, Sep 1, 2015
    I have a used one for a 355.
     
  11. cheesehead

    cheesehead Rookie

    Mar 18, 2015
    14
    #11 cheesehead, Sep 1, 2015
    Thanks much for all your help. I now have one on order in the UK. I never would have looked that far, without the help you provided.
     
  12. cheesehead

    cheesehead Rookie

    Mar 18, 2015
    14
    #12 cheesehead, Sep 1, 2015
    Just as a follow up, Euro spares has them on back order, and Scuderia is out of stock, but thinks they will have them in a week or two, and will call when they arrive.

    Thanks again for all the good help.
     

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