Welcome to Swedespeed! Always nice to see D5 owners pop in here from time to time.

If its mainly noticeable when the a/c is on look towards the side engine mount, if its noticeable all the time, look towards the bottom trans bracket. At ~45k miles on a manual car it is probably the lower trans mount.

If you installed the top mount, loosen up the center bolt, crank the car up and then tighten the bolt. It may help, it may not. Also, if you installed a poly upper engine mount they take a week or two to "break in".

 

Thank you very much for your support. Its noticeable all the time. I installed original Volvo engine mount so I have to suspect bottom trans bracket like you said.

 

There was no small rubber in my old lower torque mount. New one - original, was fitted but vibration are still there. Suggestions ?

 

I want to check the bottom engine mounts (vac operated).
What pressure (in bar) should be when the engine is idling. Measuring from air valve to mounts.

 

Cant say for your D5 but I would suspect under 1 bar. The Honda that sits next to my Volvo has a similar setup and it runs 8PSI or just over 1/2 bar. I have had to replace the vacuum line on it as the line developed leaks and gave symptoms very similar to what you are describing.
My suggestion is to check the supply line for leaks, and then look to that mount. Another possibility is the bushings at the ends of the top mount bar that runs accros the engine bay. They can and do go bad often as well.
Best of Luck I kinda wish we could get D5's here in the states.

 

Bottom engine mounts (vac operated) are OK. What about mount numer 30748811.

Can these mount (if its bad) cause very little vibration, felt through the steering wheel and the seat on idle ?

 

Yes.

 

True or false:

,,when they (lower right engine mount - if you are sat in the drivers seat) go bad the symptom is vibration through the floor and steering but only on left hand bends as the engine weight shifts to the right and vibrates through the sub frame and steering"

I am asking because my problem is not only on left hand bends but even when car is stationary (at 0 speed, engine idle)

 

Question.

Engine off, ignition off - I try to move,shake engine, by hand, forward and backward, I'm able to hear air whistle from solenoid valve (30611668), because air is push back from both front and back vacuum pads.

Is it normal or my solenoid valve is bad ?

 

In my case i installed STRUT BRACE TENSIONING KIT and about 50 -60 % vibrations on steering wheel are gone