Diagnostic Aids
WARNING: This page is about a different variant/trim than selected.
This test is intended to diagnose the following:
- Spark Plugs
- Spark Plug wires
NOTE:
A malfunctioning ignition system may cause high catalyst temperatures. Check components next to catalyst and muffler for heat damage.
COIL PACK FIRING ORDERS
| Application | Firing Order |
|---|---|
| 4-Cylinder | 1-3-4-2 |
| V6 | 1-4-2-5-3-6 |
COIL-ON-PLUG FIRING ORDERS
| Application | Firing Order | |
|---|---|---|
| V6 | 1-4-2-5-3-6 | |
| V8 | ||
| LS & Thunderbird | 1-5-4-2-6-3-7-8 | |
| All Others | 1-3-7-2-6-5-4-8 | |
| V10 | 1-6-5-10-2-7-3-8-4-9 | |