The firing order for a 1990 Oldsmobile Cutlass Supreme with a 3.1 liter engine is 1-2-3-4-5-6. When facing the car, the spark plugs are 2, 4, and 6 in the front and 1, 3, and 5 in the back.
looking at the ignition coils from left to right (passenger to drivers side). First coil: 5 2 Second coil: 3 6 Third coil: 4 1
The firing order for a 1990 Olds cutlass supreme 3.1litre is 1, 2, 3, 4, 5, 6. The number one cylinder is closest to the pulleys on the left as you face it.
firing order is1432
the firing order is 1342
1,3,2,4 that is the firing order.
diagram of firing order on a 1990 Oldsmobile cutless 3.3 engine
Go to Google.com and type in the words "1990 Geo Tracker firing order" and it will get you to a site that will tell you.
1,3,4,2
Pontiac.on.nimp.org That's should help you with the firing order. KOCKNMOUTH
The correct firing order is 13726548.
1342
1,3,4,2