At this point the vehicle has become a money pit. You are looking at around $2500 to
do the repairs that you mentioned. And that is just the beginning. Then will come the starter,
alternator, timing belt (or chain) battery, front and rear oil seals, transmission issues, rear brakes,
and on and on and on. You just won't believe how many things can go bad all at once.
Take the old bomb to your nearest Toyota and tell them you are interested in trading up.
Do it at the end of the month when every one is trying to make their bonus quota. Look for
a low mileage one 3 or 4 years old. It should give you 8 to 10 years of service. It may even have a
couple years of factory warranty left on it. Believe me, you are hearing from someone who has learned
the hard way. You will come out ahead in the long run, and all of your current and future head aches will become the dealer's problems. But he will just take the poor old thing to the local auction and lay it off on some Podunk little used car lot who in turn will sell it "as is" to some unsuspecting sucker who will then face the same dilemma that you have now. Good luck!