Idle churges when cold

C

Chae

New member
I have a 2009 street glide with a stage one kit. when I start it for the first time in the morring the RPMs bounce around from 900 to 1500 for about a minute then it idles at about 900 1000 RPMs is this normal


Thanks Tim
 
Any chance you have a Power Commander?

I have two buddies that have them and their bikes surge a bit when cold. I have a TTS Mastertune and mine does not.

I don't think it hurts anything...
 
Sounds like a failing throttle servo or throttle position sensor, or slack in the throttle position sensor. Could also be a temp sensor slightly out of tolerance (not enough to throw a light) Then, the system might think engine was warmer than it is, decrease fuel, engine slows, system sees slowing engine, adds fuel, rpm surges, repeat until actual temp is as indicated by malfunctioning sensor.
 
My '09 does this also. I have a PCV, but I do not think it is the culprit. I am still investigating though. It sure is annoying.
 
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