I posted this in the touring section but thought it may be better here.
'07 RK, stage I with Rinehart S/O's, BS, and SERT, 17k miles. It's been dyno tuned twice, once when the original stage I was done and then recently when I was trying to fix this problem.
The engine light is not coming on so the dealer says there are no codes to read.
It ONLY happens after I've been on a trip for 1.5 hours. Then it may start by idleing high for a bit then say when I come to a redlight and have to pull in the clutch and apply both brakes it will go down to zero idle. Once I crank it back up it idles so low that I have to rev it to keep it running.
Stopped on the road the first time it happened and the service manager at a HD dealer said I was running too lean at idle so I had it retuned and richened up.
If and when I park the bike for an hour or so it will go back to running right.
Does anyone have any insight to this problem?
Thanks

 

Could be engine temp sensor or IAC system. I'd check the engine temp sensor first. Have you cleaned the throttle body recently?

 

Sounds like the IAC Motor to me too. Causes both high and low idle when they start going bad. Pintel binds up.

 

I have a 07 ultra that is doing the same thing. Had it in the shop twice.Still have the problem. Sounds like this is not a uncomon problem. Wish they would figure it out.

 

Check the throttle stop screw at the face of the induction module....

It could be loose, or missing...

 

Did that, still have problem

 

Where are you located OP? See it all the time in lexus cars that still run a separate IAC valve; gas in Cali SUCKS. fouling of IAC's arent uncommon. unfortunately even cleaning them wont do too much as they get crammed full of soot and carbon. only way to make it go away for sure is to replaced the IAC with new.