Cold start problem - Harley Davidson Forums

Evo Classic Models All Evo Models

Cold start problem

Thread Tools Search this Thread
Old 02-05-2011, 03:41 PM
carlgrover's Avatar
carlgrover carlgrover is offline
Ultimate HDF Member
Thread Starter
Join Date: Oct 2007
Location: Decatur, Alabama
Posts: 5,149
Thanked 53 Times in 43 Posts
Default Cold start problem

98 Fuel Injected Road King

Bike doesn't want to start when cold. I have to open the throttle a little then hold it until it warms up. This gets it going no problem. Warm idle is fine. Bike runs fine under load and there are no fault codes. Replaced the ETS last summer. Bike displayed all the classic symptoms of a bad ETS before I replaced it.

I was playing around with the throttle cables and monkeyed with the lever that the idle speed control actuator pushes to open the butterflys. That lever is pretty hard to push. I think my idle speed control actuator is bad but I'm not sure. Should I be able to push the lever in and out easily?

If my problem isn't the idle speed control actuator I guess it could be the throttle position sensor but again, I've got no fault codes and it runs great except for a cold start. I did replace the battery a couple of weeks ago. The connections are tight on both ends. Is there a chance the ECM could have lost the idle settings?

I don't want to replace the ISC actuator if there is nothing wrong with it.

Reply With Quote
Old 02-05-2011, 03:57 PM
Mike T's Avatar
Mike T Mike T is offline
Outstanding HDF Member
Join Date: Aug 2010
Location: Union,Ms
Posts: 3,486
Thanks: 0
Thanked 1 Time in 1 Post

Your engine light should come on,as you're probably aware of,if the throttle position sensor was bad. Read this sticky...
Reply With Quote
Old 02-05-2011, 04:31 PM
96roadking's Avatar
96roadking 96roadking is offline
Outstanding HDF Member
Join Date: Mar 2010
Location: Hallsville, Tx.
Posts: 2,877
Thanks: 0
Thanked 0 Times in 0 Posts

M&M EFI has a reputation for losing idle settings. When I first got mine last spring, it idled faster warm than it did when it was cold. When I adjusted the warm idle, I had to turn the screw the opposite direction that the service manual said (can't recall right now which direction). But since then, I haven't had a problem, though sometimes it starts easier with about a quarter twist of the throttle.
Reply With Quote
Old 02-06-2011, 08:37 AM
EVOrider EVOrider is offline
Road Warrior
Join Date: Feb 2007
Location: Russellville, Arkansas
Posts: 1,702
Thanks: 0
Thanked 3 Times in 3 Posts

If the ISC actuator works, then it is working properly. Watch for actuator movement, if not working at all. Either replace or check the wiring/electrical connection. If you push the plunger of the actuator back in, then you ruined it. Make sure the acuator is working before going to idle speed adjustment.

The ECM does loose its idle speed memory from time to time. It usually only effects the cold idle speed. There are several different methods to setting the idle far, I've only found one way that works for me.

When you start a Magnetti Marelli.....start a cold engine and idle should go to about 1200 immediately. As the engine warms up, the idle should slowly lower back to about 1000 on its own.
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Aggrivating Codes on my 13 FLTRX louisianaSVT2001 Touring Models 2 07-11-2017 04:20 PM
P1475 P1477 codes on American bike Exhaust Actuator TxFxL Dyna Glide Models 1 06-24-2016 06:35 PM
Hard to start cold roadking cdavidj Touring Models 4 09-01-2015 12:06 PM
Idle Control actuator Capt. Ron Ignition/Tuner/ECM/Fuel Injection 8 07-25-2013 06:34 PM
Diagnostic Trouble Codes / Error Codes blueangel73 Dyna Glide Models 1 08-20-2011 05:07 PM

1996, 2000, 96, actuator, cold, control, evo, hard, harley, idle, king, problem, road, speed, start, starting, trouble

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Featured Sponsors
Vendor Directory

All times are GMT -5. The time now is 08:00 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: