Speedometer Gone Crazy 2013 Roadking

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Jul 21, 2018 | 03:41 PM

jdphog

Thread Starter

Stage I

Joined: Apr 2013

Posts: 1

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From: CT

Speedometer Gone Crazy 2013 Roadking

Bike was running great when I turned it off last night. Went to go on a ride first thing in the morning great weather and the speedometer started going crazy. It was showing when you were at 30MPH the speedometer was displaying 80MPH. I kept going this way until it would just peg it self so when you were doing about 50MPH the speedo was buried past 120MPH and then the engine would lose power like there was a speed limiter on the bike.

Any suggestions on what could be the issue - could it be a bad vehicle speed sensor?

Jul 23, 2018 | 08:46 AM

Zanthamos

Outstanding HDF Member

Joined: Feb 2015

Posts: 2,414

Likes: 433

From: Arkansas

I would check vss first as it is most likely tet culprit.

Jul 23, 2018 | 09:52 AM

jeff53404

Tourer

Joined: Sep 2016

Posts: 450

Likes: 90

From: Wisconsin

This was on my last cycle (2009 Trike). wasn't the speed sensor, just a bad boom software (NaN is not a number).

Jul 23, 2018 | 10:09 PM

Ivan Fernandes

Stage I

Joined: Apr 2018

Posts: 1

Likes: 0

From: Canada

I'm having the exact same issue as you. I was actually going to post my issue when I came across yours.

Symptoms:
1. Much higher speeds displayed on speedometer. (ie: parking lot speed would display 100 km/h or higher, etc).
2. Self-cancelling signals stopped working.
3. Odometer seems to increase faster (although it might just be my imagination since I haven't tested on a known distance).
4. No codes.

Unsuccessful Repair:
1. Replaced VSS. Still experiencing exact same issues. Old VSS was clean (zero shavings) upon removal.

I'm at a loss of what part to suspect next. I cleaned VSS connector pins, and speedometer connector pins. Still same result.

Any ideas? ECM?

Last edited by Ivan Fernandes; Jul 23, 2018 at 10:29 PM. Reason: added info