My 1988 Buick Electra with a 3.8L engine loves to cut off when i'm turning a corner, parking at low speeds, and after i turn a corner. It doesn't matter if the fuel tank is low or full either. Also, the engine is hard to start if it sits for a while, but after sputtering for about 5 seconds, it idles normally. I already replaced the crank position sensor which didn't help any.

I can't keep replacing parts on it, as i'm just a poor college student, and this is my only means of transportation. Help?!