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.
1999 Infiniti QX4FACTORY OEM SERVICE PROCEDURE
Service Intervals & Specifications
REPLACEMENT INTERVALS
| Component | Interval (Miles) | |||||
|---|---|---|---|---|---|---|
| Air Filter | 30,000 | |||||
| Coolant | ||||||
| Quest | 30,000 | |||||
| All Others | (1) 60,000 | |||||
| Fuel Filter | As Needed | |||||
| Oil & Filter | (2) 7500 | |||||
| Spark Plugs | ||||||
| Pathfinder, QX4 & Sentra (1.6L) | 30,000 | |||||
| Quest | 105,000 | |||||
| Except Pathfinder, Quest, QX4 & Sentra (1.6L) | 60,000 | |||||
| Timing Belt (3.3L V6) | 105,000 | |||||
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BELT ADJUSTMENT
| Application | (1) Deflection - In. (mm) | ||||
|---|---|---|---|---|---|
| Altima | |||||
| A/C Compressor | .43 (11.0) | ||||
| Generator & Power Steering Pump | .24-.26 (6.0-6.5) | ||||
| Frontier | |||||
| 4-Cylinder | |||||
| A/C Compressor & Generator | .39-.47 (10.0-12.0) | ||||
| Power Steering Pump | .39-.51 (10.0-13.0) | ||||
| V6 | |||||
| A/C Compressor | .47-.51 (12.0-13.0) | ||||
| Generator | .24-.31 (7.0-8.0) | ||||
| Power Steering Pump | .37-.41 (9.5-10.5) | ||||
| Maxima | |||||
| A/C Compressor & Generator | .17-.18 (4.2-4.6) | ||||
| Power Steering Pump | .29-.32 (7.3-8.0) | ||||
| Pathfinder & QX4 | |||||
| A/C Compressor | .35-.43 (9.0-11.0) | ||||
| Generator | .24-.28 (6.0-7.0) | ||||
| Power Steering Pump | .35-.39 (9.0-10.0) | ||||
| Quest | |||||
| A/C Compressor | .20-.28 (5.0-7.0) | ||||
| Generator | .30-.34 (7.5-8.5) | ||||
| Power Steering Pump | .39-.47 (10.0-12.0) | ||||
| Sentra | |||||
| 1.6L | |||||
| A/C Compressor & Generator | .24-.26 (6.0-6.5) | ||||
| Generator (Without A/C) | .30-.32 (7.5-8.0) | ||||
| Power Steering Pump & Water Pump | .16-.24 (4.0-6.0) | ||||
| Water Pump (Without Power Steering) | .12-.18 (3.0-4.5) | ||||
| 2.0L | |||||
| A/C Compressor & Generator | .28-.31 (7.0-8.0) | ||||
| Generator (Without A/C) | .31-.35 (8.0-9.0) | ||||
| Power Steering Pump | .16-.20 (4.0-5.0) | ||||
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Factory Service Tools
Use the Manual With the Right Hardware
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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.