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CCTMSTR
CCTMSTR, GM Certified Master Technician
Category: Chevy
Satisfied Customers: 395
Experience:  GM Master Technician.ASE Master.Advanced Level L1. NV State G2 Emission Inspector
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1991 chevy lumina 3.1L what is the firing order also how are

Customer Question

1991 chevy lumina 3.1L what is the firing order also how are the wires numbered on the coil packs? Is the firing order printed on the engine some place?
Submitted: 8 years ago.
Category: Chevy
Expert:  CCTMSTR replied 8 years ago.

The coil packs are paired as follows.Looking at the engine from outside front of veh from left to right 1/4...5/2...3/6 The firing order is 1,2,3,4,5,6

 

CCTMSTR, GM Certified Master Technician
Category: Chevy
Satisfied Customers: 395
Experience: GM Master Technician.ASE Master.Advanced Level L1. NV State G2 Emission Inspector
CCTMSTR and other Chevy Specialists are ready to help you
Expert:  JOHN aka Eauto replied 8 years ago.
Customer: replied 8 years ago.

In first answer you stated coil packs are numbered left to right 1/4...5/2...3/6.

 

In second answer at bottom of diagram is that a drawing of the coil packs? If so it shows 1-4, 6-3, 2-5 or is that something else?

Expert:  JOHN aka Eauto replied 8 years ago.
For your 1991 Chevrolet Lumina-Sedan/Coupe 3.1L MFI OHV :
chevcar13
Note:
Firing order 1-2-3-4-5-6 --- ----- | 1 || 2 1 | front | 4 || | --- | | --- | | of | 6 || | | 3 || 4 3 | --- | | vehicle --- | | | 2 || | | 5 || 6 5 | --- ----- distributorless ignition
Expert:  JOHN aka Eauto replied 8 years ago.
i posted the picture because its the correct answer