Okay, my mom bought this car when I was in 7th grade and we've had it ever since. I was sharing a 91 toyota Camry with my 2 other siblings, then my parents bought 2 new cars and gave us their old ones. I got the "newer" Pontiac with 109,000+ miles for my freshman year of college. So, I've had the car for 5 weeks and only driven it 2x. It has gone through 2 alternators, a transmission, a coil, and now the mechanic doesn't know why it's not running. I got a tune up about 2 days ago praying that it would help it stop missing. but that wasn't the case. I got the car home and it died in the driveway. the check engine light is constantly on, the ABS light stays on, and the TRAC light is constantly blinking. I'm about to give up on the car and send it to the scrap heap.
It handles really nice now that I have new ball joints! I wish the steering was just a little tighter. The cabin is a nice shade of tan to offset the cherry red exterior. if anyone has one of these cars, you'll know that the hubcaps (if you have them) sound HORRIBLE! I really suggest getting rims. I live in a nice city that has a LOT of brick roads and you can hear my car from a mile away.
It sounds like your mechanic does not have a clue what he is doing. Diagnosing why a car is not running is a piece of cake. It is when the cars start running improperly, particularly on an intermittent basis, that difficulties can arise. My guess is the car did not even most or even any of the components the mechanic replaced. I would get a new mechanic, quickly.