Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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.
| Application | (1) Idle RPM | (2) Idle RPM | (3) Maximum CO Level | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Altima | (4) 650-750 | (4) 600-700 | 5.0% | ||||||||||
| NX & Sentra | |||||||||||||
| 1.6L | |||||||||||||
| A/T | (4) 750-850 | (4) 675-775 | 7.0% | ||||||||||
| M/T | 600-700 | 550-650 | 7.0% | ||||||||||
| 2.0L | (4) 750-850 | (4) 700-800 | 10.0% | ||||||||||
| Pickup | (4) 750-850 | (4) 700-800 | 5.0% | ||||||||||
| 240SX | (4) 650-750 | (4) 600-700 | 7.0% | ||||||||||
|
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| Application | (1) Idle RPM | (2) Idle RPM | (3) Maximum CO Level | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maxima | |||||||||||||
| VE30DE | (4) 650-750 | (4) 650-750 | 0.2-8.0% | ||||||||||
| VG30E | (4) 650-750 | (4) 700 | 0.2-8.0% | ||||||||||
| Pathfinder & Pickup | (4) 700-800 | (4) 700 | 0.2-8.0% | ||||||||||
| Quest | (4) 650-750 | (4) 700-800 | 0.2-8.0% | ||||||||||
| 300ZX | |||||||||||||
| A/T | |||||||||||||
| Non-Turbo | (4) 720-820 | (4) 720 | 0.2-8.0% | ||||||||||
| Turbo | (4) 700-800 | (4) 700 | 0.2-8.0% | ||||||||||
| M/T | 650-750 | 650 | 0.2-8.0% | ||||||||||
|
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| Application | Man. Trans. | (1) Auto. Trans. | |||
|---|---|---|---|---|---|
| Altima & 240SX | 18-22 @ 700-800 | 18-22 @ 700-800 | |||
| NX & Sentra | |||||
| 1.6L | 8-12 @ 600-700 | 8-12 @ 800-900 | |||
| 2.0L | 13-17 @ 800-900 | 13-17 @ 800-900 | |||
| Pickup | 8-12 @ 750-850 | 8-12 @ 750-850 | |||
|
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| Application | Man. Trans. | (1) Auto. Trans. | |||
|---|---|---|---|---|---|
| Maxima, Pathfinder, Pickup & Quest | 13-17 @ 700-800 | 13-17 @ 700-800 | |||
| 300ZX | |||||
| Non-Turbo | 13-17 @ 650-750 | 13-17 @ 720-820 | |||
| Turbo | 13-17 @ 650-750 | 13-17 @ 700-800 | |||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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