Technical Weird steering vibration

[George1982]

Hello
I am yet to find out what causes the steering wheel to vibrate a little at idle.
Rpm is stable,it only vibrates in operating temperature and not when cold. It disappears when A/C is on. All three motor mounts are new, throttle body is thoroughly cleaned,and so is the IAC.
Any thoughts pls?

 

[judderbar]

Hello
I am yet to find out what causes the steering wheel to vibrate a little at idle.
Rpm is stable,it only vibrates in operating temperature and not when cold. It disappears when A/C is on. All three motor mounts are new, throttle body is thoroughly cleaned,and so is the IAC.
Any thoughts pls?

engine revs are slightly higher with A/C on. Can you feel the vibration where the steering shaft goes through the floor?

 

[George1982]

Steering shaft is solid. Vibration only appears on steering wheel.