Have a 2010 flhx with a idle issue. First starting it will idle at 1000 rpm with out problem. Once it starts to warm up it will dip below 1000 to around 700 then back up and repeat. Seems like it does it every 10 seconds or so. When I blip the throttle a little it will struggle a bit till 1200 rpm then rev up smooth.
Any one have any suggestions?

 

The bike is a 103, has pcv, auto tune, heavy breather, true duals and tw-555 cams

 

try unplugging the pcv and see if it still does it. run on its own ecm commands . if it still does it then one of the sensors on bike must be problem.
if it doesnt do it them a setting in pcv or the unit its self could be problem

 

It was happening before the PCV and the cams. The cams just make it more pronounced.

 

Next time that happens,
try manipulating the wires going down to the throttle body from the harness at the frame to see if there is any effect.

Mine had a bad connection there.

 

.. maybe an intake leak..or maybe the idle speed controller is crapped up..give the throttle body inside a good washing out with CRC power lube, spraying in all the ports and sliding the slide up and down (engine/ignitiion off, of course)...

 

Standard Harley reply, "They all do that"

Ben

 

Haha Ben! I wish that was the case. My 01 Deuce doesnt. 60000 miles and it idles and revs like a champ.

 

Looks like it might have been the tune. Added negative values from 500-1200 at 0% throttle in the PCV.

 

thought you said it was doing it before the PCV was installed?