I'm really new here but everyone here seems to really know their cars so I figured I'd get the best answer here.

I have a 96 subaru legacy L, I bought it two years ago and it was a lemon but have since attempted to fix it back up. Everything currently seems to run good except for bad alignment but with the potholes here there's nothing you can do.

Except, I cannot climb hills with much power. I had this problem before about a month or two ago and it was worse, I'd climb a hill and apply gas (Automatic) I wouldn't go anywhere fast, I'd be lucky to go past 30-40mph. If I would apply more gas the car would attempt to go faster but wouldn't and then the check engine light would blink and the car would die completely but turn back on after I shut it off for a minute.

Since that time there was an incident where my car was overheating, the water pump had a leak in it. I got that fixed, did the whole oil change/flush deal and now I can climb hills with more power and the check engine doesn't blink but you can tell the car is struggling to make it up the hill. It has good power any other time except for the hills. And I am at a loss at what is wrong.

Since feb a lot has been replaced on the car, Catalytic converters, crank shaft, new computer, new ignition coil pack, has had a couple tune-ups, completely re-did the electrical/wiring and more to the tune of 8k, on a car I paid 4k for.

I really want to start fixing this car up more but if I cannot get past this problem I cannot start anything else. So anyone have any idea what could be the problem?