Idle Speed & Ignition Timing
Ensure idle speed and ignition timing are set to specification. For adjustment procedures, see ON-VEHICLE ADJUSTMENTS article.
NOTE:
Curb idle speed is controlled by SBEC and not adjustable.
IGNITION TIMING (Degrees BTDC @ RPM)
| Application | Man. Trans. | Auto. Trans. |
|---|---|---|
| 2.2L & 2.5L TBI | 12 @ 850 | 12 @ 850 |
| 2.2L Turbo | 12 @ 990 | 12 @ 990 |
| 2.5L Turbo | 12 @ 950 | 12 @ 900 |
| 3.0L | 12 @ 800 | 12 @ 700 |
| 3.3L | 16 @ 750 | |