Question about 2003 Triumph Speed Four

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Triumph speed four speedo problems

I have 2003 triumph speed four. Speedo started reading erratically then stopped altogether. Since then I have replaced the speedo sensor drive, tried different clocks, two new batteries, ecu unit. Still no speedo, at wits end with the damn thing!!!! Help please..................
Many thanks sean

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  • whitegamer Apr 18, 2009

    i have the exact same problem... started with eratic readings and put new speedo sensor in.. then ecu on bike was causing fuel pump issues so put new ecu in and now have no speedometer... works perfectly with computers off different bikes and with old computer but not with new one.... if you find an answer please post


3 Suggested Answers

  • 104 Answers


take out the front wheel remove the drive it should tap out with a bit of gentle tapping they are not that tight fitting

Posted on Feb 07, 2009

  • 56 Answers


obviously you have some wire crossed straight to the positive side coming off the battery.. (probably before the ignition) trace the wire back from the speedo to make sure.. i recommend getting a wiring diagram to speed the process and make life simple...

you messed with any of the electrical?

Posted on Aug 24, 2009

  • 1 Answer

SOURCE: Hi having problems with the speedo on my 2002

This is a common problem with the Daytona's 2002+. Typically its the charging system and if the battery level gets below 12v the instrument panel will not function properly (LED display will read or flash something other than what is normal). Recommend charging the battery and checking the voltage @ the battery while running. If voltage drops as RPM increase: Replace reg/rect. The Stator my also go bad too. Too T/S (remove tail section disconnect the 3 wire connector coming from the stator and pin check a/c voltage across two pins at a time. check condition of connector and wires, if it feels stiff and brittle replace wire loom and check 3 pin connector under the fuel tank. If still bad, should be Approx 45v a/c @ idle, replace stator OR send it out for a re-wind. It's cheaper more durable and you get a 1 year warranty. I recommend Custom re-wind for this.

Owner of a 2002 50K+ mile and still runs like new

Posted on May 04, 2010

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