The engine will seize up.
engine is about to stall
Usually a sighn of bad alternator.
If it goes to hot after engine is shut down after driving that is normal. Coolant is not circulating at that point . If it goes top hot while driving that could be a problem Please clarify
Both the SOHC & DOHC engines are interference engines. If the belt goes while driving the engine most likely will be damaged.
not enough oil in the engine.
It'll run solely off the battery for a little while until the battery becomes too depleted. The check engine light will most likely come on, as well. This is, of course, provided the alternator doesn't seize when it goes out. If it does seize, your vehicle will either stall out, or it'll cause the belt to snap, which, if you have a serpentine belt, will disable your AC compressor and power steering.
even if the oil filter is clogged the oil will still go to the engine via the bypass valve but it is not filtered but if no oil goes to the engine it will soon seize up and be destroyed
my oil pressure goes up while I'm driving and back down when I stop what could cause that
in some cases but not usually
It is possible
If you think it is going bad STOP DRIVING and get it changed immediately. If the timing belt/chain goes while you are motoring it will ruin the engine.