Limp Mode
Thread Starter
|
Cruiser
Joined: Dec 2008
Posts: 245
Likes: 30
From: Newcastle, California
Limp Mode
I have a 09 ultra and went for a ride today. All was good then all of a sudden no throttle. The bike went into limp mode. I shut it down and restarted it up, it ran for about a mile and the same thing. Limp mode, so I limped home. Now how do I get the codes to see what the problem is ? What do you guys think it could be ?
https://www.fuelmotousa.com/p-29661-...%20KING%20FLHR
Usually cleaning the pins behind the throttle bottle might correct the issue. I believe it's called "fretting"
Usually cleaning the pins behind the throttle bottle might correct the issue. I believe it's called "fretting"
Grand HDF Member
Joined: Jun 2009
Posts: 3,520
Likes: 270
From: Wellsboro, PA
My 09 Classic used to do that. Shut it down, wait 10 seconds, fire it back up, and might do it again in 2 miles or might not do it again for 2 weeks. Turned out to be corrosion at the end of a wiring harness. Harness replaced, and no issue after that. Never did it again. I was lucky it never happened in the passing lane, or when passing somebody on a 55 mph 2 lane.
Seasoned HDF Member
Joined: Jun 2017
Posts: 5,315
Likes: 4,272
From: Granville New York
Check the wires at the end of the plug that goes into the left side of the throttle body, well known issue thst a wire will break inside the insulation within a few inches of the plug. The codes will help narrow it down. Mine ended up being the throttle position sensors. They're not serviceable according to harley but luckily I saved my old throttle body when I upgraded and just pulled those 6 metal clips off and that piece houses the throttle position sensors.
Club Member
Joined: Apr 2013
Posts: 7,683
Likes: 8,415
From: Utah
My 14 Limited did it several times. One dealer put a new ECM in it and it did it again soon after. Local dealer checked everything and put a new induction module on and no problems in over a year.
ymmv
ymmv
Trending Topics
Cruiser
Joined: May 2018
Posts: 161
Likes: 30
From: NW Georgia
My 2009 Ultra did the same thing last summer. Cleaned the connector and it acted normal for a few months then did it again. The code (I don't remember what it was) pointed to the throttle position sensor. Initially, I didn't see a break in the wire and thought it must be the throttle body (the position sensor is not a separate part). I called my local independent shop and was informed they RARELY see a TB problem... it's normally the wire harness or connector.
So, I went back to look at the wires in the connector. I removed all the connector's pins and inspected all the wires individually. I noticed one wire had a weird looking kink in it. When I grabbed the wire's insulation on each side of the kink and pulled... it stretched... the wire inside was broken. I cut it back and soldered in an extension... with heatshrink. Problem solved.
Seems the common culprit for most folks turns out to be the last/shortest wire in the harness. Apparently, making the tight turn to plug into the TB is the wire that breaks.
Ride Safely!
John.
So, I went back to look at the wires in the connector. I removed all the connector's pins and inspected all the wires individually. I noticed one wire had a weird looking kink in it. When I grabbed the wire's insulation on each side of the kink and pulled... it stretched... the wire inside was broken. I cut it back and soldered in an extension... with heatshrink. Problem solved.
Seems the common culprit for most folks turns out to be the last/shortest wire in the harness. Apparently, making the tight turn to plug into the TB is the wire that breaks.
Ride Safely!
John.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom
Verdad Gallardo
6 Weirdest Harley-Davidsons Ever Sold to the Public
Verdad Gallardo
7 Times Harley-Davidson Chucked Tradition Out the Window
Verdad Gallardo
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
