Ferrari 550 Sticking Speedo | FerrariChat
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Ferrari 550 Sticking Speedo

Discussion in 'Technical Q&A' started by Flying Scotsman, Feb 10, 2014.

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  1. Flying Scotsman

    Flying Scotsman Rookie

    Feb 10, 2014
    1
    Edinburgh
    #1 Flying Scotsman, Feb 10, 2014
    Last edited by a moderator: Sep 7, 2017
    Hi, Has anyone come across a sticky speedo on Ferrari 550 Maranello before. Speedo sticks at 70mph a lot of the time and can be over-reading or under reading. It is difficult to diagnose if it is the sender unit, the speedo or something in between.

    Apparently it is a big job to replace either the sensor/ sender unit (which I understand is quite inaccesible) OR the speedo (remove entire dashboard) involving hours of work for either fix.

    Can anyone provide any sage words of wisdom??
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  2. PRS Guitarist

    PRS Guitarist Formula Junior

    Oct 13, 2013
    312
    Maryland
    Full Name:
    Bob
    #2 PRS Guitarist, Feb 16, 2014
    Have you tried tapping on it like the pilots did to the fuel/oil gauges in the old WW2 movies? It seemed to work for them. I have not experienced any speedometer problems and I have a Euro car. Taz or (FBB) Fatbillybob will probably know off the top of their head.
     
  3. pkl03

    pkl03 Formula Junior
    Silver Subscribed

    Nov 29, 2004
    540
    Sydney, Australia
    Full Name:
    Peter
    #3 pkl03, Feb 18, 2014
    You do not have to remove the entire dashboard to remove the speedo. There is an excellent thread on the entire dashboard removal.

    http://www.ferrarichat.com/forum/456-550-575/333397-550-dashboard-removal.html

    The instrument cluster can be removed by taking the steering wheel surrounds off and then the cluster. You can then take the speedo to an instrument shop for testing.
     

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