i have an 07 ultra with 10k miles on it. 2500 miles ago the engine started shaking real bad at idle. i hade the dealer replace the motor mount and something called the iac? still shaking real bad. does anyone have any idea what the problem could be. my mechanic says it s nothing major but its annoying that i even get a buzzing through the floorboards at speed. i just went round trip to myrtle beach 1700 miles and no mechanical problems, just the vibration. i m idling at 1000 rpm. i even did pipes and a fuel pack with air cleaner and still shaking. i m curious if anyone else has this problem. i m concerned about crank?

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Mine has always shaked at idle - they are not a counter-balanced engine, should smooth out nicely a riding rpms, some have had good luck decreasing the vibration by installing the IDS.

 

My bike was pretty smooth last year. I added the IDS over the winter. Now it feels like it vibrates more!

I will be checking with the dealer shortly and will let you know what they say.

 

thanks, what is an IDS?

 

Have the crank checked

 

Could this be your problem?

https://www.hdforums.com/m_3330649/tm.htm

hth,
Dave

 

Belt tension?

lp

 

no because the engine is vibrating like mad in neutral and the belt is not moving.

 

Last year I had a dealer tell me that I needed a front motor mount, so I bought a new H.D (made in China) mount and changed it, well that made things 100% worse you could not stand to ride it so I put the original back on and all is well. There was nothing wrong with the original mount he just thought it was squashed a little.

 

My Road King shakes and shimmies at idle. I just figured that's the way it's supposed to be. I think it adds character.