Calling all FatBoy Lo Owners
05-19-2019, 06:14 AM
Road Master
Having an issue that maybe someone else can tell me what's going on before i take my Lo to the shop. Just passed 20,000 miles on it yesterday. A yellow light to the left of the odo lit up and the bike at a stand still is idling higher than normal. Sometimes it will turn off after riding it for a while, but sometimes it stays on. Once today i was going 30 mph and took my hand off the throttle and it maintained the speed, that's how high the idle is. Any clue as to why it's doing this or what the problem may be, maybe a sensor?
05-19-2019, 07:30 AM
Grand HDF Member
Having an issue that maybe someone else can tell me what's going on before i take my Lo to the shop. Just passed 20,000 miles on it yesterday. A yellow light to the left of the odo lit up and the bike at a stand still is idling higher than normal. Sometimes it will turn off after riding it for a while, but sometimes it stays on. Once today i was going 30 mph and took my hand off the throttle and it maintained the speed, that's how high the idle is. Any clue as to why it's doing this or what the problem may be, maybe a sensor?
05-19-2019, 03:32 PM
Seasoned HDF Member
Can you read the error code? My dash panel lights would go out, and I had the same issue with my idle. My code directed me to the voltage regulator. After I switched it out, both issues went away. Mine is a 2012 and I believe they had a recall on the voltage regulator.
Last edited by Freak Show; 05-19-2019 at 04:15 PM.
05-19-2019, 05:04 PM
Seasoned HDF Member
05-19-2019, 05:23 PM
Seasoned HDF Member
05-19-2019, 08:53 PM
Seasoned HDF Member
05-21-2019, 06:06 AM
Road Warrior
Sounds like you have a vacuum leak Dan. Sucking air some place it shouldn't. Look around the throttle body there are some ports that are capped and those caps can deteriorate over the years. Check the boots where it meets the heads, with the bike running, spray a little shot of starter fluid at them and see if idle changes. Don't want to run it that way too long, it will get lean, hot and can cause some serious damage
Last edited by Fat11Lo; 05-21-2019 at 06:08 AM.
05-21-2019, 11:14 AM
Seasoned HDF Member
Yeah, i cleaned out the throttle body yesterday, but still no change. Just talked to another friend of mine who had the same issue. He also replaced the the voltage regulator and it fixed it. got one coming will try that. If it continues, i'll go to my local shop and let them look at it. Thanks Chuck.
05-23-2019, 11:06 AM
Seasoned HDF Member
Can you read the error code? My dash panel lights would go out, and I had the same issue with my idle. My code directed me to the voltage regulator. After I switched it out, both issues went away. Mine is a 2012 and I believe they had a recall on the voltage regulator.