clogged iac valve
The vibration from riding a bike could be responsible for numbness in the fingertips. One reason could be the jarring of the spine, resulting in nerve compression.
maybe but it could also be your flex tube which absorbs most of the vibration. If it is cracked or broken than you will feel a lot more vibration because it is no longer being absorbed.
Use vibration dampening measures like a barsnake.
There are many reasons why your car might vibrate while it is idling. It could be running too hard for example.
Could be EGR valve sticking open or dirty at an idling condition or hesitates when accelerating.
first check engine timing this is a major cause of vibration in a stationary vehicle, or non firing cylinder could be electrical or mechanical, then harmonic balancer, then look for broken engine mount.
There is a short somewhere in the wiring.
There are a number of forces that could cause vibration in a ship. Friction for example is a force known to cause vibration.
Could be in need of a tune up.
If you are referring to vibration when you hit your brakes in a car, it could be that your rotors are warped or your wheels could also be out of balance, or both.
The vibration was so severe in the front end, I had trouble steering the car. I could only feel the vibration when the car accelerated. Earthquakes cause a distinct vibration of the earth.
Could be low of lubricant. Have the level checked. Also can be a clutch throwout bearing problem.