[klarzy]

Originally Posted by Edward Huggins

Yes and still crying after swapping the rack with no improvement.....A MG Rover specialist garage has suggested that by going into the ECU with the T4 interface, they could increase/vary the 650rpm idle speed to smooth out the vibration resonance - and indeed if I add some light throttle, the vibration does ease somewhat. However, another MG Rover specialist has advised that the ECU has a default idle speed and cannot be changed. Even more confused now, I appeal to the Forum yet again!! ED

i have seen the idle speed sweaked in a T4 but is that not putting a sticky plaster over the underlying issue??