I have a 2008 dyna and last time I drove it at the end of the ride I shut it off .i started it about 20min later and engine light and battery light are on.the bike is charging 14.1 volt.i now replace stator and charging went up to 14.3 volt and doing some reading they say to change voltage regulator so I did so both pieces are new now it charges at 14.1 volts.when I start the bike the bike revs up to about 2500 rpm and sometimes it will ideal down and the next time it will seat there and run at high speed .i had also replaced the iac to see if it would help no go .i get codes of p 108/p562 start bike and the engine light and charging light will come on battery voltage with bike shut off the volts are 12.3 tried different battery and same thing need help

 

Man its hard to read sometimes.
"I have a 2008 Dyna and last time I drove it at the end of the ride I shut it off. I started it about 20 min later and the engine light and battery light came on. The bike is charging 14.1 volt. I replaced the stator and charging went up to 14.3 volts. Doing some reading they say to change voltage regulator which I did, so both pieces are new. Now it charges at 14.1 volts. When I start the bike it bike revs up to about 2500 rpm and sometimes it will idle down and the next time it will set there and run at high speed. I had also replaced the IAC to see if it would help, no go. I get codes of p108/p562. I start the bike and the engine light and charging light will come on. I checked the battery voltage with bike shut off the volts are 12.3.I tried a different battery with the same results. I need help."

1. How are you checking the voltage and where?
2. Check all the terminal/battery connections.
3. Whats the voltage output of the battery? Have you had the batteries tested?
4. Any mods on the bike?
5. Welcome to the forum.

 

Checking voltage at idle and at 1500 rpm

 

Battery test good

 

Got stage 1 in bike hyper air cleaner

 

You have 2 different issues to investigate. One is the MAP sensor (p108) and the other is the low voltage (p562)

MAP sensor is likely why you are getting uneven idle behavior. Check this thread:
https://www.hdforums.com/forum/dyna-...ode-p0108.html

Did you clear the codes after replacing the stator and regulator? Are you sure the p562 is still be thrown and isn't just stored? Since you are getting the p108 also, how do you know the p562 is still current?

Your battery should be 12.7 or greater when the bike isn't running. It sounds like your charging system is working properly. Take your battery to an auto parts place and get it load tested. Check all of the battery cable connections for corrosion and make sure they are tight. Clear the codes and see if p562 comes back.