Infiniti QX4 (R50) Series Workshop Manuals
Infiniti QX4 (R50) 1997-2003 Service & Repair Manual provides comprehensive guidance for maintaining and repairing this model. It includes detailed sections on engine diagnostics, transmission servicing, suspension adjustments, electrical wiring diagrams, and common troubleshooting techniques. With step-by-step instructions, this manual is designed to support both professional mechanics and DIY enthusiasts in ensuring optimal performance and longevity for the Infiniti QX4 across all systems and components.
Engine VG33E 3,3 L V6, VQ35DE 3,5 L V6.
Infiniti QX4 (R50) 1997-1999 VG33E
| QX4 (R50) 1997-1999 Automatic Transmission | Download |
| QX4 (R50) 1997-1999 Front and Rear Axle | Download |
| QX4 (R50) 1997-1999 Brake System | Download |
| QX4 (R50) 1997-1999 Body and Trim | Download |
| QX4 (R50) 1997-1999 Engine Control System | Download |
| QX4 (R50) 1997-1999 Electrical System | Download |
| QX4 (R50) 1997-1999 Engine Mechanical | Download |
| QX4 (R50) 1997-1999 Accelerator Control, Fuel and Exhaust Systems | Download |
| QX4 (R50) 1997-1999 Heater and Air Conditioning System | Download |
| QX4 (R50) 1997-1999 Engine Lubrication and Cooling System | Download |
| QX4 (R50) 1997-1999 Maintenance | Download |
| QX4 (R50) 1997-1999 Propeller Shaft and Diffeential Carrier | Download |
| QX4 (R50) 1997-1999 Restraint System | Download |
| QX4 (R50) 1997-1999 Starting and Charging System | Download |
| QX4 (R50) 1997-1999 Steering System | Download |
| QX4 (R50) 1997-1999 Front and Rear Suspension | Download |
| QX4 (R50) 1997-1999 Supplement | Download |
| QX4 (R50) 1997-1999 Transfer | Download |
Infiniti QX4 (R50) 2000-2003 VQ35DE
| QX4 (R50) 2000-2003 Engine Lubrication and Cooling System | Download |
| QX4 (R50) 2000-2003 Maintenance | Download |
| QX4 (R50) 2000-2003 Propeller Shaft and Diffeential Carrier | Download |
| QX4 (R50) 2000-2003 Restraint System | Download |
| QX4 (R50) 2000-2003 Starting and Charging System | Download |
| QX4 (R50) 2000-2003 Steering System | Download |
| QX4 (R50) 2000-2003 Front and Rear Suspension | Download |
| QX4 (R50) 2000-2003 Transfer | Download |
The main weak points of the Infiniti QX4
Frame and suspension corrosion: Mostly found in models driven in regions with harsh winters. Frame parts are susceptible to rust, especially in the rear.
Transmission problems: Automatic transmissions can suffer from overheating, which leads to component wear and frequent breakdowns, especially on high-mileage models. Regularly changing the transmission oil helps prevent problems.
Suspension problems: The owner may experience rapid wear of shock absorbers, ball joints and steering rods, especially if frequently driving on uneven terrain.
Electrics and sensors: ABS sensors, lambda probes and throttle position sensors often fail. This can cause errors on the instrument panel and impair engine performance.
Problems with the brake system: Rapid wear of brake discs and pads during intensive use, as well as possible jamming of brake calipers, especially in regions with high humidity or reagents on the roads.
Air conditioning system: Refrigerant leaks and air conditioning compressor malfunctions can also bother owners. Regular inspection and maintenance help reduce the risk of breakdowns.
VQ35DE engine (after restyling): Sometimes oil leaks and timing chain problems can be observed at high mileage.