I ordered, received and replaced both mounts on top, the one near the firewall and the other on top of the engine. Replacing those parts helped but did not completely resolve the issue, I plan on installing the transmission torque mount on the underside. The two top mounts were real bad so i'm thinking the bottom must be bad too, so for $50.00 why not.

 

Today I replaced the 2 top engine bushings in an attempt to get rid of some unwanted vibration. The old bushings were trash, the new (blue from IPD) ones helped some. I'm hoping if I replace the underside transmission torque mount will help even more.
The vibration i'm trying to control is only present at at a stop light, once I give it gas it goes away. What else should I check? Ideas?

 

Don't you understand that the blue bushing is NOT what you want to do if you want it smooth?
You need to install VOLVO OEM mounts and rubber bushings, not urathane bushings,
THAT's what make these cars vibrate

 

+1 with JRL. The blue IPD mount does cause idle vibration. Again, check the mount at the front of the motor behind the right front wheel.

Motor mount, right side, Volvo S70, replacement instructions