Vibration at idle

[English_Mike]

Originally Posted by pearce9906

The harmonic balancer is the big pulley on the front of the crankshaft. Do you think the vibration is coming from the motor (i.e. the front of the car) or could it be coming from the rear or midsection of the car, I've known of the exhaust laying against the unibody chassis and vibrating the crap out of it during idle.

I have checked the harmonic balancer and all looks fine.

However, I have found a earthing strap hanging from the firewall which has a washered end on it which looks like it should be attached to something like the bell housing!
I did have a new clutch fitted and wonder if the guys forgot to re-attach it.
Could this be the problem?
Where should it attach?