Idle Speed & Ignition Timing Check
Ensure idle speed and ignition timing are set to specification. See CURB IDLE SPEED and IGNITION TIMING tables. For adjustment procedures, see ADJUSTMENTS article in tion\tion.
NOTE:
Curb idle speed and ignition timing on 2.5L and 4.0L are controlled by the Single-Board Engine Controller II (SBEC-II) and are not adjustable.
CURB IDLE SPEED
| Application | Idle RPM |
|---|---|
| 5.9L | 600 |
IGNITION TIMING
| Application | (Degrees BTDC @ RPM) |
|---|---|
| 5.9L | 16 @ 600 |