Limp mode again
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Road Master
Joined: May 2008
Posts: 957
Likes: 1
From: New York / Texas
Limp mode again
2008 FLTR Road Glide, stage one [ Screaming Eagle Touring Performance Mufflers, Screaming Eagle Ventilator A/C w/ K&N Filter ], dyno tuned w/ Screaming Eagle Pro Race Tuner. Will the rev limiter put the bike in limp mode. Today was one of those times that I just had the need for speed. 1st gear hit about 5000 rpm, 2nd gear about 5300 rpm, went to shift into 3rd gear Limp mode. Pulled off on the shoulder went through the reset procedure, had no problems the rest of the day shifting around 3200 to 4200 rpm's. The bike does run great and i get very good mpg.
Cruiser
Joined: Jul 2011
Posts: 149
Likes: 1
From: Randleman, NC
Not sure RPM's are the problem. Brother had a 2010 Limited that would go into limp mode when ever it felt like it. After it progressively did it more often they found a wire broken inside its insulation due to a sharp kink from the ECM to the throttle body actuator. The scoot was back to dealer to many times to count until a tech ran a continuity check on wires & found the break. The insulation on wire looked fine but wire inside was broke.
Banned
Joined: Mar 2012
Posts: 11,232
Likes: 16
From: Socialist Republic of the USA
Not sure RPM's are the problem. Brother had a 2010 Limited that would go into limp mode when ever it felt like it. After it progressively did it more often they found a wire broken inside its insulation due to a sharp kink from the ECM to the throttle body actuator. The scoot was back to dealer to many times to count until a tech ran a continuity check on wires & found the break. The insulation on wire looked fine but wire inside was broke.
Extreme HDF Member
Joined: Jun 2011
Posts: 10,216
Likes: 224
From: Glendale AZ
2007-2008 was common years for the dreaded Limp mode always ending up being the throttle body wiring.....dielectric grease as many connection as you can get to....I'm not preachin to you but reving 1st gear that high is not a common practice unless its being dyno'd, see if it stops doing the' Limp' if you stop reving it like that.
Road Captain
Joined: Feb 2006
Posts: 604
Likes: 64
From:
Look at your Dyno run, It will show you where the "Cut Off RPM" is, should be around 6000 - 6200.
The tuner may have set it lower (5800) to protect the motor as you don't want to over rev it.
The tuner may have set it lower (5800) to protect the motor as you don't want to over rev it.
Last edited by Kenney; Oct 26, 2012 at 03:47 PM.
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Seasoned HDF Member
Joined: Jun 2006
Posts: 30,887
Likes: 33,068
From: King George, VA
I had the same thing occur to my 06 RG this past summer. I was riding through KY when the bike started cutting out intermittently on one cylinder. I trucked the bike back home and took it to an indy after I spent a few days trying to figure it out myself. Turned out a wire lead going to the rear cylinder injector had finally broke apart inside the insulation. A continuity check didn't find it because I didn't flex the wires while probing the wires.
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