Engine Performance problem
1997 Oldsmobile Achieva 4 cyl Front Wheel Drive Automatic 100963 miles
My 97 achieva won't start at all. I put it on the computer and it said o2 sensor, crankshaft sensor malfunction, and misfire. Changed the spark plugs, boots. O2 sensor and the crankshaft sensor along with mat sensor. The car still won't start. Help me please.