To avoid confusion, remove and tag the spark plug wires one at a time, for replacement. The 3.5L (VIN H) engine's unique ignition system has the ignition coils directly over each plug. No spark plug wires are used.
If
a coil is replaced on any of the 3.1L, 3.4L or 3.8L engines, it may not
be numbered, as is the factory coil. For this reason it is imperative
that you label all wires before disconnecting any of them. Also, before
removal, compare the current wiring with the accompanying
illustrations. If the current wiring does not match, make notes in your
guide to reflect how your engine is wired.
Fig. 3.1L (VIN M) engine Firing order: 1-2-3-4-5-6 Distributorless Ignition System
Fig. 3.4L (VIN X) engine Firing order: 1-2-3-4-5-6 Distributorless Ignition System
Fig. 3.4L (VIN E) engine Firing order: 1-2-3-4-5-6 Distributorless Ignition System
Fig. 3.5L (VIN H) engine Firing order: 1-2-3-4-5-6 Distributorless Ignition System
Fig. 3.8L (VIN 1) engine Firing order: 1-6-5-4-3-2 Distributorless Ignition System
Fig. 3.8L (VIN K) engine Firing order: 1-6-5-4-3-2 Distributorless Ignition System
The firing order for the 3.1L VIN M, 3.4L VIN E, 3.4L VIN X
and 3.5L VIN H engines is 1-2-3-4-5-6. The right bank cylinders are on
the cowl side (rear) of the engine compartment and are numbered 1,3,5,
left bank cylinders on the front side of the vehicle, are numbered
2,4,6.
The firing order for the 3.8L VIN K and 3.8L VIN 1 engines
is 1-6-5-4-3-2. Starting at the front of the engine, cylinders in the
left bank are numbered 1,3,5 and cylinders in the right bank are
numbered 2,4,6
Hope helped (remember rated this help) Good luck.
If you look at the coil towers you will see numbers by them, they correspond to the cylinders.
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