Depends on how much you like the car.
$1,000 if you can drive it another year or two isn't bad.
I have right at 200,000 on my 99 Malibu and for me other then the Intake and pass lock plus a starter it hasn't been bad.
I will drive it until it drops. Buying a used car I might have more problems and I just don't need or want a new car.
Guess its a decision only you can Make.
Sam