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Firing order

Tiny
JOHN BLAKE
  • MEMBER
  • 2001 OLDSMOBILE
Wires got mixed up when replacing spark plugs on an Alero, 3.4 engine. Need firing order.
Saturday, February 4th, 2006 AT 11:56 PM

9 Replies

Tiny
GWEATHER1
  • MEMBER
  • 2 POSTS
Here is the firing order for both engines:

Firing Order 1-2-3-4-5-6

Firing Order 1-3-4-2

Check out the diagrams (below). Please let us know if you need anything else to get the problem fixed.

Cheers
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Sunday, February 5th, 2006 AT 12:01 AM
Tiny
CHUCKWEST1
  • MEMBER
  • 1 POST
  • OLDSMOBILE
I need to get the firing order for my 1999 Intrigue, 3.5 L V6 engine. I have only removed the spark plugs from the front coil and the hoses fell to the ground. Now my car hesitates and jerks so I do not think I have them in correctly.
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Tuesday, June 19th, 2018 AT 12:26 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
3.5L F/O.

Note: make sure all your connections on the plug wires are tight.


https://www.2carpros.com/forum/automotive_pictures/12900_1999_olds_intrigue_3_1.jpg

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Tuesday, June 19th, 2018 AT 12:26 PM (Merged)
Tiny
DAMITMAN3D
  • MEMBER
  • 1 POST
  • 1997 OLDSMOBILE
  • 6 CYL
  • 2WD
  • MANUAL
  • 68,000 MILES
I need to find out firing order and cylinder order.
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Tuesday, June 19th, 2018 AT 12:26 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
See below.


https://www.2carpros.com/forum/automotive_pictures/12900_fo_11.jpg

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Tuesday, June 19th, 2018 AT 12:26 PM (Merged)
Tiny
TRESA46952
  • MEMBER
  • 1 POST
  • OLDSMOBILE
I have a Cutlass Supreme, 1994, six cylinder, 3.1 engine 100,000 miles. I need to know the firing order of the spark plugs. Thanks, Tresa
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Tuesday, June 19th, 2018 AT 12:26 PM (Merged)
Tiny
LOSONE
  • MECHANIC
  • 1,616 POSTS
1 6 5 4 3 2.
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Tuesday, June 19th, 2018 AT 12:26 PM (Merged)
Tiny
LOSONE
  • MECHANIC
  • 1,616 POSTS
It is not quite that simple perhaps this will help as the firing order changes depending on the set up.

If you have a 3.1L 1994 and older with the coil packs under the front exhaust manifold. Front cylinders are 2-4-6, back cylinders are 1-3-5. Coil packs left to right are 1-4-6-3-2-5. If you have a 3.1L 1995 and newer with the coil packs on top of the engine. Front cylinders are 2-4-6, back cylinders are 1-3-5. Coil packs left to right are 5-2-3-6-4-1
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Tuesday, June 19th, 2018 AT 12:26 PM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Hello,

I found this check out the diagrams below, let me know if you need anything else. Check out the diagrams (below).
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Monday, January 14th, 2019 AT 10:20 AM

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