P1608 code
Thread Starter
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Intermediate
Joined: Jan 2023
Posts: 32
Likes: 7
From: Mississippi
Hey Guys thanks for all the interest. I will do my best to answer the questions.
voltage at rest 12.2
voltage bikes turned 12
starting drops to 10
bike running 11.8
must not be charging
thanks again
voltage at rest 12.2
voltage bikes turned 12
starting drops to 10
bike running 11.8
must not be charging
thanks again
Seasoned HDF Member
Joined: Aug 2006
Posts: 24,421
Likes: 30,642
From: Pennsylvania
Now you need to isolate if it is a voltage regulator issue or a stator issue.
First though check your connections to/from the voltage regulator, make sure they are tight.
Testing of both is here:
https://www.hdforums.com/forum/elect...sting-1-a.html
https://www.hdforums.com/forum/elect...sting-2-a.html
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,298
Likes: 6,324
From: Honah Lee
Still rambling and just what I would do.
The first thing is test battery as Coolbreeze shortcut says.
If that battery has a short, you risk damaging some pretty expensive parts like the stator and voltage regulator on pre BCM bikes. Your BCM has the smarts to protect itself, so don't kill that.
Now with a good checked battery, reading 12.6 to 13.1 after the surface charge from the maintance charger has worn off or killed it by keying on a minute and let headlight do it. (Don't start it). Key off.
Now kill the P1608 code. (There is threads on here on how to do that) Now start it and rev it to 2000 rpm with your DC volt meter on the maintenance charger leads.
What's it dropping to cranking?
What voltage do you have at 2000 rpm? (Voltage ckeck rpm)
Should be around 14... not over 15.
PS. A battery at 12 volts if your lucky to get more then a click is going to read a lot lower than 10. Put a picture of you volt meter on the bike maintenance charger leads on your next post.
The first thing is test battery as Coolbreeze shortcut says.
If that battery has a short, you risk damaging some pretty expensive parts like the stator and voltage regulator on pre BCM bikes. Your BCM has the smarts to protect itself, so don't kill that.
Now with a good checked battery, reading 12.6 to 13.1 after the surface charge from the maintance charger has worn off or killed it by keying on a minute and let headlight do it. (Don't start it). Key off.
Now kill the P1608 code. (There is threads on here on how to do that) Now start it and rev it to 2000 rpm with your DC volt meter on the maintenance charger leads.
What's it dropping to cranking?
What voltage do you have at 2000 rpm? (Voltage ckeck rpm)
Should be around 14... not over 15.
PS. A battery at 12 volts if your lucky to get more then a click is going to read a lot lower than 10. Put a picture of you volt meter on the bike maintenance charger leads on your next post.
Last edited by Jackie Paper; May 15, 2025 at 11:20 AM.
Thread Starter
|
Intermediate
Joined: Jan 2023
Posts: 32
Likes: 7
From: Mississippi
Update
Hey guys I took all your advice and put it to work. Tested battery, seemed good. I checked the voltage coming from the stator. All good. Check readings from battery to regulator. All good.
I figured it must be the voltage regulator . I picked up a new one at the local Harley shop and installed. All good getting around 14 volts with engine running.
Thanks for all the advice .
Yall dont know how helpful you are. Have a little patience with us sometimes, I didnt even realize where the regulator was this morning.
thanks again
Steve
I figured it must be the voltage regulator . I picked up a new one at the local Harley shop and installed. All good getting around 14 volts with engine running.
Thanks for all the advice .
Yall dont know how helpful you are. Have a little patience with us sometimes, I didnt even realize where the regulator was this morning.
thanks again
Steve
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