big electrical problem on 1992 Pontiac Grand Am

i was on my way home from work and the car just stopped and shut off and a really awfull smell came from the air filter we took it to the shop and they are sayin something is shorting out the computer.can anyone tell me what it might be because these guys cant tell me what it is all they tell me is its a electrical problem and they never seen anything like this before.

Asked by for the 1992 Pontiac Grand Am
There are so many wires and sensors on your car and, I was a GM Tech, that I would have to see the car in person to give a decent answer. It does not sound like this shop is very good, how about getting your car to a better shop?