2002 FLHRI Has my mechanic stumped! - Harley Davidson Forums: Harley Davidson Motorcycle Forum
Harley-DavidsonForums.com is an independent enthusiast website owned and operated by VerticalScope Inc. Harley-DavidsonForums.com is not sponsored by or in any way affiliated with Harley-Davidson Inc.. The Harley Davidson names and logos are trademarks owned by Harley-Davidson Inc.

Go Back   Harley Davidson Forums: Harley Davidson Motorcycle Forum > Technical > Fuel Systems

» Insurance
» Our Partners
»ATV Reviews
»Motorcycle Games
LinkBack Thread Tools Display Modes
Old 11-18-2011, 10:52 AM   #1 (permalink)
Junior Member
Join Date: Apr 2008
Location: Arkansas
Posts: 6
2002 FLHRI Has my mechanic stumped!

I sure hope there might me a HD tech monitoring this forum 'cause we have a problem we can't seem to solve.
2002 FLHRI 69,000 miles. No tuner.
Here's the deal: Bike has run fine for last 8 years except for a couple of times it ran rough, wouldn't Idle but cleared itself up in a few miles. Then, I started down the onramp to the interstate and just as I merged into traffic, it backfired a couple of times, coughed and started missing. I crossed over the median and limped back home. Pulled the plugs and the front plug was fouled black like too rich. Back plug was ok but too black for normal. I happened to keep last set of old plugs and compared them. Old ones nice and gray/brown color. We checked for an engine code. None. Pulled the tank off and emptied it and cleaned it out. Fresh Shell Premium gas. Now, about every 5th or 6th start-up it won't idle properly. Runs rough, exhaust smells rich, won't set a code. Checked injector wiring. The shop that has the bike is an independent but owned and operated by HD factory trained mechanic. All his mechanics are stumped. They called all the HD shops in our area and none have suggestions. One possibility, Idle Air Control??

Does anyone have any suggestions or ideas?

Has anyone else run into this problem?

I sure do need some help. The bike has been down now for two weeks and we are all pulling our hair.
perzaklie is offline   Reply With Quote Quick reply to this message
Old 11-18-2011, 09:48 PM   #2 (permalink)
Junior Member
Join Date: Apr 2008
Location: Arkansas
Posts: 6
I am wondering if the ECM might possibly be the culprit? Has anyone encountered ECM failure with any of the Twin Cams in 2002 and up?
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind
perzaklie is offline   Reply With Quote Quick reply to this message
Old 11-18-2011, 11:25 PM   #3 (permalink)
Senior Member
big worm's Avatar
Join Date: Feb 2009
Location: Juggalo Island
Posts: 4,752
maybe you got an injector sticking and in that case it would supply to much fuel. just a thought.
Crew Chief/Tuner 2013 Super Comp Manufacturers Cup Series Champion
2009 Farmington Dragway Motorcycle Class Champion 06 VRSCD
1998 street cruiser class champion farmington dragway
big worm is offline   Reply With Quote Quick reply to this message
Old 11-19-2011, 07:04 AM   #4 (permalink)
Retired citizen
Join Date: Jun 2009
Location: Pt. Wash.,WI
Posts: 14,604
You can test the IAC . Remove the air cleaner to get a better view of the IAC air passage , now cycle the ignition on and off while observing the IAC plunger thru the hole at the top of the throttle body intake . If the IAC is functioning correctly you'll observe the IAC pintel cycling in the air passage , it should cycle consistently ... in - out - in - out .
Wait 10 seconds between cycles or a code could get set .
Another thing that could cause your symptom is a faulty / failing CKP which might not set a code . The CKP can also be tested . Disconnect the CKP connector and test ohms across the two pins , it should read 1000 ohms give or take a few . If out of range it would become intermittent .
Disclaimer : Don't believe anything I say unless you are absolutely sure that I know what I'm talking about .
SCHMIDTYS is offline   Reply With Quote Quick reply to this message

Quick Reply

Register Now

In order to be able to post messages on the Harley Davidson Forums: Harley Davidson Motorcycle Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Motorcycle (s)
What type of bike (s) do you have
Where you live
Date of Birth
Your date of birth and age are displayed in several places on the forum. Only the administrator will have access to your date of birth should you choose to hide it via the privacy option below.
Month Day Year


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Display Modes

Posting Rules
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 03:15 AM.

Powered by vBulletin® Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
This site is in no way affiliated with Harley-Davidson
Motorcycle News, Videos and Reviews
Honda Grom Forum Harley Davidson Forum Honda 600RR Forum Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Honda Africa Twin Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Victory Charger Forum Honda Vultus Forum HD LiveWire Forum Ninja H2 Forum
BMW Scrambler Forum Ducati Scrambler Forum Kawasaki Ninja 250SL Forum