Touring Models Road King, Road King Custom, Road King Classic, Road Glide, Street Glide, Electra Glide, Electra Glide Classic, and Electra Glide Ultra Classic bikes.
Sponsored by:
Sponsored by:

low idle

Thread Tools
 
Search this Thread
 
Old Feb 18, 2008 | 06:23 PM
  #1  
hogvibrator's Avatar
hogvibrator
Thread Starter
|
Advanced
Joined: Sep 2005
Posts: 56
Likes: 11
Default low idle

[>:] my 01 road kings idle drops 100,200 rpm after i adjust it.i have a DFO, k&n air cleaner & true duals.I replaced intake gaskets & engine temp sensor, whats next?
 
Reply
Old Feb 18, 2008 | 06:26 PM
  #2  
choochoo's Avatar
choochoo
Banned
Joined: Jan 2007
Posts: 2,301
Likes: 4
From:
Default RE: low idle

Is it fuel injected?
If so you can not just turn the idle screw.
You must do it by the procedure in the service manual.
 
Reply
Old Feb 18, 2008 | 07:41 PM
  #3  
hogvibrator's Avatar
hogvibrator
Thread Starter
|
Advanced
Joined: Sep 2005
Posts: 56
Likes: 11
Default RE: low idle

[>:]i did it according to the book.
 
Reply
Old Feb 18, 2008 | 07:46 PM
  #4  
hogvibrator's Avatar
hogvibrator
Thread Starter
|
Advanced
Joined: Sep 2005
Posts: 56
Likes: 11
Default RE: low idle

[>:] by the way its injected.
 
Reply
Old Feb 18, 2008 | 08:02 PM
  #5  
choochoo's Avatar
choochoo
Banned
Joined: Jan 2007
Posts: 2,301
Likes: 4
From:
Default RE: low idle

to do it right you're supposed to use a breakout box and measure the voltage on the
two pins called for. This voltage must be precise.
If you don't have a break out box, you can use two needles slipped in parallel to the pins called
for, on the ECM connector. ecm pins 16 & 30 and ground. With a digital volt ohm meter

YOu say you followed the procedure outlined in the HD service manual 99481-01
on pages 9-30 & 31?

Are any trouble codes showing?
 
Reply
Old Feb 18, 2008 | 08:04 PM
  #6  
twistedcherokee's Avatar
twistedcherokee
Road Warrior
Joined: Oct 2006
Posts: 1,350
Likes: 46
Default RE: low idle

Mine does the same thing. If I don't reset the computer it will get down past 800 rpm's in about a month of riding. While I was doing my cam chain tensioners I noticed that the Idle Control runs a lever that kicks the linkage in & out. I think I might try taking it loose all the way so that the idle screw sets the throttle body @ 1000 rpms then reinstall the IC and clear it all. If that don't work I may find a way to do a manual adjustment somewhere other than the idle screw.

Toby
 
Reply
Old Feb 18, 2008 | 08:04 PM
  #7  
choochoo's Avatar
choochoo
Banned
Joined: Jan 2007
Posts: 2,301
Likes: 4
From:
Default RE: low idle

BTW you have to have the DFO removed when you set the base cold / warm idle.

What DFO are you using. And when does the rpm drop occur.?
 
Reply
Old Feb 21, 2008 | 10:13 PM
  #8  
twistedcherokee's Avatar
twistedcherokee
Road Warrior
Joined: Oct 2006
Posts: 1,350
Likes: 46
Default RE: low idle

What is the DFO? I think my manual says to disconnect the Idle Control, set the idle and then disconnect the battery, then plug the IC inand reinstall the battery. It's been probabbly a year that I did it last. Every once in awhile I disconnect the battery, and it raise the idle back up. Maybe there is an adjustment for the IC that I am not doing. I will look at my manual on Sat.

Toby
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-1

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-2

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-4

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-5

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-6

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-7

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-8

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
story-9

Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

 Verdad Gallardo
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
troverman
Touring Models
2
May 5, 2014 10:19 AM
bcooper326
Exhaust System Topics
2
Dec 13, 2012 04:16 PM
mongomark
Touring Models
8
Jun 11, 2010 01:18 PM
WIRON
Ignition/Tuner/ECM/Fuel Injection
2
May 18, 2009 03:55 PM
boneyard
Ignition/Tuner/ECM/Fuel Injection
4
Oct 4, 2007 10:44 AM




All times are GMT -5. The time now is 04:58 AM.

story-0
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.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-1
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-2
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-3
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-4
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.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-5
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-6
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.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-7
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-8
10 Things Harley-Davidson Needs to Fix in 2026

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.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE
story-9
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

Slideshow: Graeme Billington's left-hand-drive Shovelhead is as much about problem-solving as it is about classic Harley form.

By Verdad Gallardo | 2025-12-30 11:27:08


VIEW MORE