Base Ignition Timing
NOTE:
Ignition timing is not adjustable on models with DIS or EDIS.
Ensure idle speed and ignition timing are set to specification. For adjustment procedures, see ADJUSTMENTS article. Ensure all accessories are off and transmission is in Park or Neutral. Set parking brake. Disconnect automatic parking brake release (if equipped). Ensure vehicle front wheels are in straight-ahead position and curb idle speed set to specification.
4-CYLINDER BASE IGNITION TIMING
| Application |
Degrees BTDC @ RPM |
| 2.3L |
** |
6-CYLINDER BASE IGNITION TIMING
| Application |
Degrees BTDC @ RPM |
| 4.9L |
10 @ Idle |
V6 BASE IGNITION TIMING
| Application |
Degrees BTDC @ RPM |
| 2.9L |
| Automatic Transmission |
10 @ 800 |
| Manual Transmission |
10 @ 850 |
| 3.0L |
10 @ Idle |
| 4.0L |
|
V8 BASE IGNITION TIMING
| Application |
Degrees BTDC @ RPM |
| 5.0L |
| Automatic Transmission |
10 @ 525-825 |
| Manual Transmission |
10 @ 550-850 |
| 5.8L |
| C6 Automatic Transmission |
10 @ 630-930 |
| E4OD Automatic Transmission |
10 @ 580-880 |
| Manual Transmission |
10 @ 580-880 |
| 7.5L |
10 @ 500-800 |