Misfire 92 lesabre

Hi... I drive a 92 Lesabre.... I recently replaced the plugs, wires and oxygen sensor and still, it wouldn't run right... after having the car towed and some kind of sensor replaced, (near or on the front wheels) it is still missing and there might be a problem maybe with the vacuum system??? The miss is very evident... causing the whole car to jerk... and when flooring it.... it completely dies. Would anyone be able to give me some ideas of where the problem may lie? Many thanks! PS the fuel pump checked out okay.

The ignition coils. Check the ignition coils...

also be sure you replaced the spark plugs with ac delco brand. i had the same problem when i replaced mine with bosch platinum plugs.then i got ac delco and it was fine