Ignition/Tuner/ECM/Fuel Injection Need 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.

2005 Road King doing weird stuff, need advise.

Thread Tools
 
Search this Thread
 
  #1  
Old 02-02-2023, 01:52 PM
996Duc's Avatar
996Duc
996Duc is offline
1st Gear
Thread Starter
Join Date: Feb 2023
Location: Petaluma Ca
Posts: 5
Received 5 Likes on 2 Posts
Default 2005 Road King doing weird stuff, need advise.

Sorry the bike is a 02 not a 05
Well this bike is officially confusing me, I have been beating my head against a wall for a few days now.

2002 Road King EFI with Cruise Control.
The bike was blowing the fuel pump fuse, I unplugged the fuel pump at connector 13a under the dash/ on top of the tank. Fuse stopped blowing which led me to believe that there was a pinched wire or a bad fuel pump. I removed the pump and inspected all wiring. I bench tested the pump and it worked fine. I did find one questionable wire and fixed that.

Now the fun begins!!!
With the RUN/Stop switched to run position I turn the bike on and there is no fuel pump or starter.
With the Run/Stop button switched to OFF, I turn the bike on then turn the RUN/Stop to RUN. The fuel pump clicks on and primes the system. I hit the starter button and the bike turns over but does not start. Release the starter button and you hear the fuel pump prime again like its supposed too. I then turn the bike off and on again then the fuel pump does not prime and the starter button does nothing.
After this the bike will do nothing unless I let it sit for an hour or two then the exact same thing happens.

What am I missing?
 

Last edited by 996Duc; 02-02-2023 at 03:45 PM. Reason: listed the wrong year
  #2  
Old 02-03-2023, 07:53 AM
HarleyHappy's Avatar
HarleyHappy
HarleyHappy is online now
Stellar HDF Member
Join Date: May 2017
Location: Southern NH
Posts: 2,658
Received 5,417 Likes on 2,238 Posts
Default

Check your battery and connections then your main switch. It’s possible your not getting full voltage through your contacts.
 
  #3  
Old 02-03-2023, 12:01 PM
996Duc's Avatar
996Duc
996Duc is offline
1st Gear
Thread Starter
Join Date: Feb 2023
Location: Petaluma Ca
Posts: 5
Received 5 Likes on 2 Posts
Default

Originally Posted by HarleyHappy
Check your battery and connections then your main switch. It’s possible your not getting full voltage through your contacts.
Battery is new and charged, I have cleaned the contacts inside and connecting to the main power switch. I have full power to everything, but still intermittent power to the Fuel Pump. Fuel pump and the starter relay only power up if I turn the bike on with the on/off switch in the off position then once I turn the on/off switch to ON then the fuel pump and starter circuit is live, I can hit the starter button and the bike turns over and the fuel pump primes, but if I turn the main power off and then on again,,,,,,,,Nothing for hours. Could it be a bad ECU??
 
  #4  
Old 02-04-2023, 07:54 AM
HarleyHappy's Avatar
HarleyHappy
HarleyHappy is online now
Stellar HDF Member
Join Date: May 2017
Location: Southern NH
Posts: 2,658
Received 5,417 Likes on 2,238 Posts
Default

The “nothing for hours” sounds like a circuit breaker that heated up due to over temp either by impedance or short to ground.
The short to ground should happen fast. Sounds like you need to start checking wires.
Have you done anything recently?
You need to check your work on the fuel pump.
 
  #5  
Old 02-06-2023, 01:19 PM
996Duc's Avatar
996Duc
996Duc is offline
1st Gear
Thread Starter
Join Date: Feb 2023
Location: Petaluma Ca
Posts: 5
Received 5 Likes on 2 Posts
Default

After going over the entire wiring harness and the fuel pump assembly again, I found that the voltage regulator was shorting to ground and wrecking havoc on the entire system. Something it shorted and sometimes it did not. Weird, but its fixed now.
 
The following 3 users liked this post by 996Duc:
gravybiscuit (02-06-2023), HarleyHappy (02-07-2023), porkster (02-11-2023)
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
blackflhx
Electrical/Lighting/Alarm
13
05-02-2023 08:30 AM
TheNeonGuy
Ignition/Tuner/ECM/Fuel Injection
33
06-18-2022 09:13 AM
CB899
Dyna Glide Models
4
08-09-2019 01:44 PM
zschaeff205
Ignition/Tuner/ECM/Fuel Injection
5
07-14-2016 10:41 AM
Win_Brad
Ignition/Tuner/ECM/Fuel Injection
4
07-30-2007 11:12 PM



Quick Reply: 2005 Road King doing weird stuff, need advise.



All times are GMT -5. The time now is 07:21 AM.