Vz Shaking Problem

[Marsz]

My Vz ssz shakes from 0 to 75km, I have, replaced tail shaft, Front struts, back shocks, magwheels x 3 the universal has been checked, brakes checked and changed.. It also makes a knock noise from drive to revers, or if I speed up fast, after 80 the ride is pretty good, warning on the dash comes up to stop car then after turning it off for 5mins it's OK, I've had it at the mechanic when this is happening and his computer can't pick anything up, it's very frustrating and annoys me, also at one point I had to get the centre bearing replaced, any help would be appreciated

 

[Fu Manchu]

Are your wheels balanced?
Are your wheels round? Could have taken a heavy knock.
The diff could have a bit of play and cause the knock sound going into gear.

 

[rambunctious]

Is it harmonic (comes and goes) or continual. ?
If possible borrow a set of no vibratey wheels off another car to try to rule out wheels.
And check play in wheel bearings at the same time.
And don't think balancing wheels will rule out wheel problems.
I had the wheels on my wife's car balanced and it was worse than before so I took it back and they redid them much better.
Took my own car in for rotate and balance and watched as the lazy fitter balanced only the ones going to front.
Needless to say I am never going back to them again.
You mentioned inspecting unis but has the tailshaft been balanced after replacing the centre bearing ?
I believe you need someone who has been around cars for a while, not mechanic because they are usually too busy to chase vibrations.
What part of Brisbane are you.

 

[_R_J_K_]

Does it do it in neutral?

 

[Marsz]

Are your wheels balanced?
Are your wheels round? Could have taken a heavy knock.
The diff could have a bit of play and cause the knock sound going into gear.

Yes they are

 

[Marsz]

Yes they are

I did say I've replaced mags brand new x 3 that's also with new tyres, I've spent so much trying to find the problem. Maybe I need to take it to Holden

 

[rambunctious]

Take it to holden only if you totally crazy

 

[Fu Manchu]

You mentioned you replaced 3.
There’s 4. Can you be certain is not off shape?

 

[Fu Manchu]

... I believe you need someone who has been around cars for a while, not mechanic because they are usually too busy to chase vibrations.

This.

 

[Marsz]

You mentioned you replaced 3.
There’s 4. Can you be certain is not off shape?

I've replaced all 3 times, 3 sets of 4 magwheels and there over a space of a year brand new or should I say I've replaced 4 mags 3 times