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.
you ask if you can change the throttle positioning sensor, the answer is yes.
The sensor is right behind you air breather on the left side, this part is slotted so when you take it off be sure you get it in the same spot, also the screws heads are filled with an epoxy ( I assume they do this so people just don't start adjusting things) so you will need a small set of vice grips to remove the screws (this description in actually in the manual).
The part is $39 and comes with new screws.
I put mine on and it started right up and ran perfectly.
good luck
I was able to clean the throttle body with carb cleaner really good where the sensor is and haven't had the problem again so hopefully it doesn't come back. Thanks for the response.
Just an added question on this topic as mine is doing the same thing. It only seems to do it after it's warmed up. It seems the longer I ride it, the worse it gets.
Could that be a symptom of the Throttle Position Sensor being bad too?
dsrt66
Try cleaning the throtle body where the shaft with the baffles go into the sensor, mine has been working fine after I cleaned it. I've put probably another 1000mi since no problem.
dsrt66
Try cleaning the throtle body where the shaft with the baffles go into the sensor, mine has been working fine after I cleaned it. I've put probably another 1000mi since no problem.
I went ahead and tried that. I took it out afterwards and put about 25 miles on it and it ran great. I rode to work the next day and about 20 miles later on the way home, it started doing it again.
So unless the TPS is actually bad, a gummed up throttle body/TPS/Air cleaner isn't the issue.
But thank you for taking the time to throw that idea out there.
Last night I put in a new Throttle Position Sensor. It ran fine for the 15 miles to work, but until I've burned up this 3/4 tank of gas and it hasn't done it, I won't consider it fixed. I think it's just trying to lure me into a false sense of security.
If this doesn't fix it, the next part I go after is the MAP sensor...according to the dealer, that is a fairly common replaced item after 50k.
i have a 05 road king cus. with 55,000 miles and my seems to start spitting ,skipping around 50-60 mph just cursing and sometime its does ok ,then there it is back. You think that could be my problem ????
The TPS is one of the root causes of these old FI systems. Make sure you have it dialed in to .275 volts. Simply lining it up where the old one was isn't going to cut it.
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom
Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.
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.