Power to spark plugs?

I have an 87 Buick LeSabre and the car will not start. Come to find out that there is no power getting to the spark plugs to cause a spark. I've replaced the coil pack that sits on top of the motor. I also thought there was a fuel problem but the fuel pump and filter is fine. When it was able to drive, the engine light would come on and I'd press the gas peddle to gain more speed and reduce and the light would go out. Last week driving I was stopped at a red light and when it turned green, the car died and refused to start. I don't know a diagnostic machine and other places that does, it's for a 1995 models and up. I would appreciate any advice/help.