What causes car to shake vibrate hard?

It is idling. This is hard for an engine to do smoothly.

Normally a bent wheel or tire out of balance.

Yes, either can cause a shake while driving.

loud, and shety muffler

could be a broken engine mount.

most likely the cv joints are finished

Could be time for a tune up.

rubber bushings in motor mount worn

Can be a bent wheel, tire out of balance, or worn suspension parts.

might have misaligned or loose wheels

the cuase of this is ussaully worped rotars

The power steering pump is working hard and the engine is only idling. It could be the harmonic balancer ...

Could be a problem with your torque converter

It could be that a motor mount has failed allowing the engine to vibrate, thus shaking the car. ...

The most common cause is tire out of balance or bent wheel.

Cylinder miss, broken motor mount, or vacuum leak.

Could be many things. Amoung them, low engine idle, one or more vaccum leaks, engine missing. ...

Adding heat causes gas molecules to vibrate, increasing the gas volume or pressure. A car with a damaged valve will usually vibrate noisily while operating. Tuning forks are designed to vibrate and thereby create a particular pitch. ...

If the tires are properly balanced plug tires should not cause a vibration. ...

Can be an engine misfire, vacuum leak, or problem with a broken motor mount. ...

If your car is shaking it could be poor suspension alignment can cause a car to shake and vibrate, and other possible causes are bent or worn suspension parts, old tires, bent wheels and bad brakes. If your car sounds especially rough at speed, the problem could lie with the car's spark plugs and wires. Spark plugs fire more frequently the faster you drive, and the engine will sound rough when they begin to fail. ...

You'll feel it as you're going down the road, and after you've ruled out U-joints, yokes, and carrier bearings as the culprit. ...

Cylinder misfire. Possibly failed or failing engine mounts.

The engine of the car may need to be cleaned or your oil may need to be changed. ...

have front suspension checked