Need Help

I have a 95 Pontiac Bonniville, the fan belt broke, and the shop had a difficult time putting the belt back on (took parts of the engine apart) any way got the car back and started to drive it go it up to 50 mph and it started to chug...then it died. I sprayed the engine (with the car running) after spilling some oil while adding a quart...now it won't start...it will fire, but it will not connect...Can anyone give me any suggestions????

shouldnt this have been put in the bonneville forum???