When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Ignition/Tuner/ECM/Fuel InjectionNeed advice on ignition issues? Questions about a tuner? Have questions about a EFI calibration or Fuel Injection? Tips on Engine Diagnostics, how to get codes, and what they mean. Find your answers here.
I have an 07 FLHRS that I purchased used, 1 previous owner. I was changing out the air cleaner system the other day and noticed that the TPS was unplugged and each fitting was plugged with a cap, so it was obviously intentional. I know the previous owner was not knowledgeable enough to do it herself. I guess I am not either seeing as I left the HD technician field in 2001. But knowing what I do know, I can't figure it out. I have searched google and the forums, but maybe I am not hitting the right question. Does anyone know why someone would do this? I don't see where there is any tuner, or how it would function properly with it disconnected. The bike runs fine, has never had an issue. Thanks for the help.
If the TP sensor is indeed unplugged the bike would run like crap simply because the engine management system has no idea what actual throttle opening is so fueling and timing is based on base idle settings.
There would also be an engine light illuminating in the speedo since the ECM doesn’t see a good reading for TP.
A pic or 2 showing this condition would be good also since there is at least 1 connector under the tank that doesn’t get plugged in Unless it is an HDI international bike.
Bob
Are you sure it's not the active intake connector used on international models? There is no way the bike would run anywhere near ok with the TPS disconnected. Bob refers to it above.
Last edited by Ed Ramberger; Jul 7, 2019 at 08:00 PM.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.