Engine Firing Orders: 1991

Oldsmobile	Calais	2.3 liter SOHC L4 VIN "A"
Oldsmobile	Calais	2.3 liter DOHC L4 VIN "D"
Oldsmobile	Calais	2.5 liter L4
Oldsmobile	Calais	3.3 liter V-6 VIN "N"
Oldsmobile	Custom Cruiser RWD	5.0 liter V-8 VIN "E"
Oldsmobile	Cutlass Ciera	2.5 liter L4
Oldsmobile	Cutlass Ciera	3.3 liter V-6
Oldsmobile	Cutlass Ciera Cruiser	2.5 liter L4
Oldsmobile	Cutlass Ciera Cruiser	3.3 liter V-6
Oldsmobile	Cutlass Supreme FWD	2.3 liter DOHC L4 Quad 4
Oldsmobile	Cutlass Supreme FWD	3.1 liter DOHC V-6 VIN "T"
Oldsmobile	Cutlass Supreme FWD	3.8 liter V-6 VIN "L"
Oldsmobile	Delta 88	3.8 liter V-6 VIN "L"
Oldsmobile	Ninety-Eight	3.8 liter V-6 VIN "L"
Oldsmobile	Toronado	3.8 liter V-6 VIN "L"

Oldsmobile Truck	Bravada	4.3 liter V-6 VIN "Z"
Oldsmobile Truck	Silhouette	3.1 liter V-6 VIN "D"

Additional Information provided courtesy of AllData