Idle Speed & Ignition Timing
Ensure idle speed and ignition timing are set to specification. Improper setting of ignition timing and idle speed may cause driveability problems and/or false setting of trouble codes. For adjustment procedures, see ADJUSTMENTS
article.
4-CYLINDER IDLE SPEED & CO LEVEL
| Application |
Idle RPM |
Maximum CO Level |
| Altima |
650-750 |
10.5% |
| Frontier |
750-850 |
10.8% |
| Sentra & 200SX |
| 1.6L |
| A/T |
750-850 |
11.0% |
| M/T |
625-725 |
11.0% |
| 2.0L |
750-850 |
11.0% |
| 240SX |
650-750 |
12.8% |
V6 IDLE SPEED & CO LEVEL
| Application |
Idle RPM |
Maximum CO Level |
| Maxima |
| A/T |
575-675 |
11.0% |
| M/T |
575-675 |
11.0% |
| Pathfinder & QX4 |
700-800 |
8.0% |
| Quest |
700-800 |
10.8% |
4-CYLINDER IGNITION TIMING
| Application |
Man. Trans. |
Auto. Trans. |
| Altima & 240SX |
18-22 @ 650-750 |
18-22 @ 650-750 |
| Frontier |
18-22 @ 750-850 |
18-22 @ 750-850 |
| Sentra & 200SX |
| 1.6L |
6-10 @ 625-725 |
6-10 @ 750-850 |
| 2.0L |
13-17 @ 750-850 |
13-17 @ 750-850 |
V6 IGNITION TIMING
| Application |
Man. Trans. |
Auto. Trans. |
| Pathfinder, QX4 & Quest |
13-17 @ 700-800 |
13-17 @ 700-800 |
| Maxima |
13-17 @ 575-675 |
13-17 @ 650-750 |