Question about 1987 Pontiac Bonneville
1987 Pontiac Bonneville 3.8 liter V-6 VIN "3"
Identifying Ignition Types I and II
On Type I coil packs, three twin tower ignition coils are combined into a single coil pack unit.
On Type II coil packs, the coils can be replaced separately and the ignition wires are all on the same side of the coil pack.
With Type I Ignition
With Type II Ignition
Hope this helps.
Posted on Apr 28, 2011
The firing order is:-
Posted on Mar 24, 2011
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Posted on Jan 02, 2017
the firing order is, 1-2-3-4-5-6. coils from left to right are: 5-2-3-6-4-1. number 1 cylinder is in back under alternator or next to it.
Posted on Mar 30, 2010
The firing order is 1-2-3-4-5-6
The cylinder #
From the firewall, passenger to dives side 1-3-5
From the radiator, passenger to drivers side 2-4-6
On the coil pack from passenger to drivers side
Good luck and keep me posted, be glad to answer any other questions you may have.
Posted on Nov 02, 2009
NOTE: To avoid confusion, replace spark plug wires one at a time.
Fig. 1: 5.8L engine Firing order: 1-3-7-2-6-5-4-8 Distributor rotation: Counterclockwise
Fig. 2: 4.9L engineFiring order: 1-5-3-6-2-4Distributor rotation: Clockwise
Fig. 3: 5.0L and 7.5L enginesFiring order: 1-5-4-2-6-3-7-8Distributor rotation: Counterclockwise
Fig. 4: 6.9L and 7.3L Diesel enginesInjection order: 1-2-7-3-4-5-6-8
Posted on Sep 09, 2010
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