I have a 06 ultra classic .It has idle problems I can't get fixed.Sometime it idles high sometimes it dies. i had it to a dealer last fall and they fixed a intake leak but did not fixe my problem.Someimes it idles about 1500 rpm till you come to a complete stop then it idles down to normal.sometimes it wants die . It seems to me it might be a sensor problem because when it idles high it goes back to normal when you make a complete stop. It's like the complete stop tell's it something and then it is alright again.

Anbody got any ideas ?

 

Are you getting any engine codes?

 

IAC motor bad?

 

Not sure I know it works part of the time, how do you check it out?

 

My 06 UC did the samething when hot and I came to a stop. Problem was occasional. I put a PCIII on it to cool it down and worked the throttle once in a while when concerned. Put 42,000 miles on it then traded it in on my 09 UC. Not a big problem for me.

 

SEEMS LIKE IN 06 THEY WERE TOO BUSY DESIGNING THE 07 96"MOTORS.I HAD A 06 sg AND IT DID THE SAME THING OF COURSE THE DEALER BLAME THE DFO UNIT,BUT SINCE ITRADED IT IN THEY PUT THE SERT ON IT FOR THE NEXT OWNER AND I HEARD IT WAS STILL DOING IT,THEY JUST TRIED TO SQUEEZE THE 88 TOO MUCH.DID YOU GET THE INJ CHANGED TO 12 DEGS?

 

Squirt some carb cleaner up unto the opening for the IAC, right in front of the throddle plate. Will help if it is a IAC sticking.

Another thing could be a injector leaking through.

I had that. Though it was a idle problem at first caused by a sensor or tuning problem.

Used DATA mode and saw everything seemed to be working like it should.
But still had idle problems. How could that be?
On the road you don't notice it.

How do you get too much gas when pulse with is so small?? Leaking through. What it was.

Also gave strange starting speeds.