Could be many things like a stuck thermostat, blown head gasket, warped heads, bad water pump etc.
3 possibilities and none of them are good: 1. Blown head gasket (almost always caused by an overheated engine) 2. Cracked head (almost always caused by an overheated engine) 3. Cracked block (almost always caused by an overheated engine)
Has the engine ever been overheated ? That will do it !
because it's been overheated and damaged.
If the engine was severely overheated, yes that can cause engine failure.If the engine was severely overheated, yes that can cause engine failure.
Engine may seize if overheated to that extreme
1000 degrees plus
Yes, any engine can be rebuilt unless the block is cracked. Just because it overheated does not mean it will needs to be rebuilt. Have it inspected by a tructed mechanic.
Most likely it's caused by a damaged head gasket when the head warped. Has the engine overheated at any time in the last few thousand miles?
your engine might be overheated, causing the vibrations
Your engine most likely overheated
no coolent low oil
Engine seized?