Hello House,
Please i need expert advise on the possible causes of vibration during motion.
This vibration occurs when my car is on a stable road and achieves about 30km/h.
Once i accelerate and speed increases, the vibration ends and comes up again when speed reduces to 30km/h.
I have changed shock absorbers, leakages and shaft.
Your advice will be highly appreciated

As I no get motor how I go do... well I go just watch and learn....

Do wheel balancing and alignment.I once had a similar experience but had to look for a good place to alignment and wheel balancing and after that I don't joke with it anytime I change shocks,tyres etc.
Goodluck.

Also check if your tyre is still good.

colossus2:
Also check if your tyre is still good.

Well, i thought about that so i changed the front tires to the back to be sure but the vibration continued.

lipstick2:
Do wheel balancing and alignment.I once had a similar experience but had to look for a good place to alignment and wheel balancing and after that I don't joke with it anytime I change shocks,tyres etc.
Goodluck.

So i went for wheel balancing and alignment today.
The man in charge said the vibration is due to the bad engine sitting (motor mount) and recommended replacement after which wheel balancing will then be done.