Unfortunately, there are too many moving parts on a vehicle to give you an adequate answer. It all depends on the circumstances under which the vibration occurs. (Such as it only occurs while idling, accelerating, etc...) I can tell you that there are repair shops that will give your vehicle a free inspection. Just call around. Even if there are no mechanics willing to look at it for free, I'd still get it looked at. Unusual/abnormal vibrations can cause damage to perfectly fine parts of your car if you leave it go for too long, thus adding to the repair bill. Sorry I couldn't be of more help.
a weak battery will not cause an engine vibration.
yes
If you have a "check engine" light on, start with having the codes read. A misfire code can tell you which cylinder or cylinders are having problems. A misfire could be the cause of your engine vibration.
Usually the crankshaft is not balanced properly, but there can be any number of things that can cause this. I would talk to a mechanic, and soon, if you don't know how to check for this. By the way, most original beetles do shake a little naturally. This is due to the design (opposed four) of the engine and the firing pattern.
You can feel the engine running inside the car not necessarily vibration but it can cause vibration but for sure you can feel the engine running at your foot.
A damaged or deteriorated engine mounting. Possibly a bad harmonic damper if the timing or firing of the spark plugs is off, then this will cause the engine to shake unevenly.
Several things can cause your 1996 4.3 liter V-6 engine to misfire and have a vibration. A bad fuel injector is the most common cause.
it cant do that because no one can stop a vibration only the earth could
It is according to when you feel the vibration. If you have a vibration at higher speeds, your driveshaft could be out of balance. At lower speeds, you may actually have a cracked engine mount. Take it to a shop before it tears something up.
yes, A vibration with a frequency high enough to cause itching
There are a number of forces that could cause vibration in a ship. Friction for example is a force known to cause vibration.
After repairing the cause of the code, you clear the code with a scan tool.