If I were you I wouldnt buy a 4runner unless you are getting a 22re old school boy. Up until 97 they have worse engine problems than any isuzu engine ever did, and I have never seen a 4 runner that wasnt saggy bottomed a bit. (excepting highly modified ones)

If we wanted to start a Rag on other car contest it would be far too easy to rag on the other cars you might be willing to buy. Ie. 4runners, Jeeps (man alive, have you even looked at a jeep forum for the oodles and oodles of problems with these vehicles??)

THERE IS NO SUCH THING AS A SILVER BULLET. There is no car that is bullet proof.

Problems suck but the amount you have experienced sounds exactly like what you should expect. If you don't want your ZU, I and oodles of people on this board do because we recognize that problems have to happen. I would care to bet that the average Isuzu owner locks their keys in the car more often than they have real problems with the car.

Sounds like your just getting through it, keep trucking man!