2003 Heritage Softail EFI
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,144
Likes: 11,219
From: San Diego, CA
I would need a little more info before I would know if I could offer an intelligent guess...
What "scan tool" are you using?
What is meant by "calls out injector"?
Is the tool saying you have a current fuel Injector DTC from your ECM?
What is the actual code?
Any mods to the bike, or is it OEM?
Any recent work done to the bike?
Trying to trouble shoot an issue from a post on a forum is difficult. Since we are not there to hear & see what you are, detailed info is better than generalities...
Stellar HDF Member
Joined: Sep 2021
Posts: 2,019
Likes: 1,469
From: Black Hills of SD
Did you happen to just purchase the bike? Could be a leftover code waiting to be cleared with run cycles, after someone replaced a bad injector?
For what it's worth - After extensive troubleshooting, I found a bad aftermarket injector on my bike, and I never had a code showing it was bad.
For what it's worth - After extensive troubleshooting, I found a bad aftermarket injector on my bike, and I never had a code showing it was bad.
Thread Starter
|
3rd Gear
Joined: Oct 2017
Posts: 7
Likes: 7
From: Central PA
Update
I'll replace both injectors. I've been the only owner. It was odd how well it starts and runs. I would have thought a bad injector would have caused performance problems. I'll repost after the change. Thanks to all.
Seasoned HDF Member
Joined: Feb 2007
Posts: 6,081
Likes: 1,127
From:
Replacement of parts without confirmation of problem is generally not suggested.
Reason: If the new part does not solve problem.....
The replacement parts can confuse diagnostics because then you are stuck trying to identify if the new part is functioning correctly or adding to the problem.
For example, perhaps a wire or connection was disconnected for some fuel tank work, air cleaner work, throttle cable change or some other item in that area caused a loss of connection.
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,899
Likes: 8,006
From: poway
Trending Topics
Thread Starter
|
3rd Gear
Joined: Oct 2017
Posts: 7
Likes: 7
From: Central PA
After much time spent, it appears the ECM is faulty. Sorry for the disappearing act, but I can only work on the bike as time is available. As I stated before, the bike starts easily and runs great. It's that damn check engine light. It's indicating low voltage to the front injector. I am getting beyond my expertise now. Any thoughts would be appreciated.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,144
Likes: 11,219
From: San Diego, CA
After much time spent, it appears the ECM is faulty. Sorry for the disappearing act, but I can only work on the bike as time is available. As I stated before, the bike starts easily and runs great. It's that damn check engine light. It's indicating low voltage to the front injector. I am getting beyond my expertise now. Any thoughts would be appreciated.
Before replacing the ECM, I would do what Max suggested in the post above yours... to check the front injector wires for possible separation under the insulation right before the connector.
Also, make sure it's a good, clean, solid contact with the connector to the front injector, and make sure all the pins/contacts are straight & clean.
Thread Starter
|
3rd Gear
Joined: Oct 2017
Posts: 7
Likes: 7
From: Central PA
That's the plan. Check the wiring at the injector. Clean the connection point. Possibly replace the connector. The code indicates low voltage to the injector. We'll replace the ECM only as a last resort. We can test the voltage at the good injector, no code on that one. It's just time consuming. Thanks for all the input.