Replacing Vehicle Speed Sensor (VSS)
Cruiser
Joined: Aug 2013
Posts: 244
Likes: 1
From: Southeast Louisiana
My Iron did pretty much the same drove me bat **** crazy. Due to no trouble codes I recorded the speedometer not working etc on my phone. Also it only did this once it was warmed up. Harley said they were unable to replicate it. Until I told them it had to be really warmed up. He put it in the Dyno room and presto she acted up. After replacement the bike ran much better.
Road Captain
Joined: Mar 2010
Posts: 705
Likes: 8
From: southern IL
Glad to be of service! Forgot all about this thread since it was over 2 years ago...
Just want to add that I also ended up changing my IAC motor thing-a-ma-jig at a later date because the cutting out at stops returned. Never did have any more speedo problems though. Information on this and other forums has saved me a ton of $$$ over the years.
Just want to add that I also ended up changing my IAC motor thing-a-ma-jig at a later date because the cutting out at stops returned. Never did have any more speedo problems though. Information on this and other forums has saved me a ton of $$$ over the years.
Tourer
Joined: Nov 2009
Posts: 392
Likes: 12
How does one replace the VSS? I can see it, touch it, but can't get a hex wrench in it to remove the bolt. FYI - I came across this thread yesterday, on my ride home the speedo started acting up....reading 120MPH while going about 50 in traffic. I made one stop and after starting up again, the speedo worked fine. Given the intermittent problem, I figure I would just go ahead and replace it.
Last edited by tmilo1000; May 2, 2014 at 10:56 AM.
Road Captain
Joined: Mar 2010
Posts: 705
Likes: 8
From: southern IL
How does one replace the VSS? I can see it, touch it, but can't get a hex wrench in it to remove the bolt. FYI - I came across this thread yesterday, on my ride home the speedo started acting up....reading 120MPH while going about 50 in traffic. I made one stop and after starting up again, the speedo worked fine. Given the intermittent problem, I figure I would just go ahead and replace it.
Let's see.... rear wheel, splash guard, computer block, and electrical panel being held on by 3 bolts. After all that's off, the VSS is staring you in the face. Then it's easy to replace!!!
Cruiser
Joined: Apr 2010
Posts: 180
Likes: 2
From: NW Arkansas
The manual spells it out nicely. If you don't already have one, it was the best investment I ever made with my HD.
Let's see.... rear wheel, splash guard, computer block, and electrical panel being held on by 3 bolts. After all that's off, the VSS is staring you in the face. Then it's easy to replace!!!
Let's see.... rear wheel, splash guard, computer block, and electrical panel being held on by 3 bolts. After all that's off, the VSS is staring you in the face. Then it's easy to replace!!!
Advanced
Joined: Feb 2014
Posts: 69
Likes: 82
From: Croatia
Small update:
Couple days later, idle problem is back.
At the end I also had to change IAC.
300km later everything still OK.
Couple days later, idle problem is back.
At the end I also had to change IAC.
300km later everything still OK.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Stage I
Joined: Jun 2016
Posts: 1
Likes: 0
From: Rancho Cordova
Well, this VSS issue seems to be an ongoing ordeal.... I have a brand new 2015 Iron 883 and after about 1000 miles, my speedometer began to drop to zero whilst riding. I'm still under warranty, but I think I might try to simply replace the VSS myself and see if the following stops happening:
