Infiniti QX4 1997-2003 4R01 Transmission Specifications
This document provides detailed technical specifications for the 4R01 transmission used in the 1997-2003 Infiniti QX4. It includes essential information such as gear ratios, fluid capacity, torque converter specifications, and shift points. These specifications are crucial for maintenance, repair, and performance tuning of the vehicle. The data is sourced from factory service manuals and technical bulletins, ensuring accuracy and reliability. Whether you're a professional mechanic, enthusiast, or owner, this guide serves as a valuable resource for understanding and servicing the 4R01 transmission. It also includes compatibility information for replacement parts and upgrades, helping you make informed decisions for your Infiniti QX4.
Overview Specifications
This document provides detailed specifications and technical information about the 4R01 transmission used in the 1997-2003 Infiniti QX4. It covers essential aspects such as general specifications, maintenance guidelines, common issues, and performance characteristics. Use this guide to understand the transmission's operation, identify potential problems, and maintain optimal performance. The document is structured to help both professionals and enthusiasts find relevant information quickly and efficiently.
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Key Specifications
Transmission Type
4-speed automatic
Fluid Capacity
9.5 quarts
Weight
150 lbs
Max Torque
250 lb-ft
Recommended Fluid
ATF Matic-D
Available Specifications
General Specifications
This section outlines the fundamental specifications of the 4R01 transmission, including its design, compatibility, and key technical details. It provides a comprehensive overview of the transmission's structure and capabilities.
General Specifications
This section outlines the fundamental specifications of the 4R01 transmission, including its design, compatibility, and key technical details. It provides a comprehensive overview of the transmission's structure and capabilities.
Transmission Design
- 4-speed automatic transmission
- Rear-wheel drive and 4WD compatibility
- Hydraulic control system
- Electronic control unit (ECU) integration
Compatibility
- Designed for 1997-2003 Infiniti QX4
- Compatible with V6 engines
- Fits both manual and automatic shift models
- Requires specific fluid type: ATF Matic-D
Maintenance Guidelines
Proper maintenance is crucial for the longevity and performance of the 4R01 transmission. This section provides detailed instructions on routine maintenance tasks, fluid changes, and inspection procedures.
Maintenance Guidelines
Proper maintenance is crucial for the longevity and performance of the 4R01 transmission. This section provides detailed instructions on routine maintenance tasks, fluid changes, and inspection procedures.
Fluid Maintenance
- Check fluid level every 15,000 miles
- Replace transmission fluid every 30,000 miles
- Use only ATF Matic-D fluid
- Inspect for leaks during fluid checks
Inspection Procedures
- Regularly inspect transmission mounts
- Check for unusual noises during operation
- Monitor shift quality and responsiveness
- Inspect electrical connections and sensors
Common Issues and Troubleshooting
This section identifies common problems associated with the 4R01 transmission and provides troubleshooting tips to diagnose and resolve these issues effectively.
Common Issues and Troubleshooting
This section identifies common problems associated with the 4R01 transmission and provides troubleshooting tips to diagnose and resolve these issues effectively.
Common Problems
- Delayed or harsh shifting
- Transmission fluid leaks
- Slipping gears or failure to engage
- Overheating during operation
Troubleshooting Tips
- Check and replace worn-out solenoids
- Inspect and repair damaged seals and gaskets
- Ensure proper fluid levels and quality
- Verify ECU functionality and programming
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- 4-speed
- Platform
- RE4R01A
- Material
- Aluminum alloy housing
- Location
- Front longitudinal
Dimensions
- Length
- 27.5 inches (698.5 mm)
- Width
- 21.3 inches (541 mm)
- Height
- 18.7 inches (475 mm)
- Weight
- 187 lbs (84.8 kg)
- Fluid Capacity
- 9.8 quarts (9.3 liters)
- input Shaft Diameter
- 1.18 inches (30 mm)
- Output Shaft Diameter
- 1.38 inches (35 mm)
Materials
- Housing
- Aluminum alloy
- Gears
- Case-hardened steel
- Clutch Packs
- Composite friction materials
- Shafts
- Chrome-molybdenum steel
- Seals
- Viton rubber
Features
- Shifting
-
- Electronic control with adaptive learning
- Lock-up torque converter
- Manual shift mode
- Grade logic control
- Cooling
-
- Integrated transmission cooler
- Auxiliary cooler compatibility
- Temperature monitoring system
- Durability
-
- Heavy-duty clutch packs
- Reinforced planetary gear set
- High-capacity oil pump
- Control
-
- Electronic shift control module
- CAN bus communication
- Fail-safe mode
Safety Features
- Protection
-
- Overheat protection
- Over-rev protection
- Torque limitation
- Emergency
-
- Fail-safe limp mode
- Manual shift override
- Park lock mechanism
Comfort Features
- Smoothness
-
- Adaptive shift control
- Torque converter damper
- Precision gear engagement
- Noise Reduction
-
- Helical cut gears
- Isolated mounting points
- Optimized gear mesh
Accessories
- Cooling
-
- Transmission cooler kit
- Temperature gauge
- External cooling fan
- Mounting
-
- Transmission mount kit
- Crossmember reinforcement
- Support bracket
- Maintenance
-
- Filter kit
- Fluid exchange kit
- Pan gasket set
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Fluid and filter replacement
- Pan gasket inspection
- Solenoid testing
- Shift linkage adjustment
- Mount inspection
- Notes
- Use only Nissan Matic-D or equivalent ATF
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Parts and labor
- Powertrain
- Miles: 60,000Years: 5Coverage: Internal components
- Corrosion
- Miles: 100,000Years: 7Coverage: Housing and external parts
- Emissions
- Miles: 80,000Years: 8Coverage: Electronic control system
Production Details
- Manufacturer
- JATCO
- Manufacturing Process
-
- Precision CNC machining
- Automated assembly
- Laser alignment
- Pressure testing
- Quality Control
- Material Testing: X-ray inspectionPerformance Testing: Dyno testingFinal Inspection: Leak and pressure test
- Sustainability
-
- Recycled aluminum usage
- Closed-loop fluid system
- Low-emission manufacturing
- Production Metrics
- Units Per Day: 450Defect Rate: 0.02%Capacity: 120,000 units/year
Service Information for 4r01 transmission Service
Maintenance and service requirements specific to this component
- Fluid and filter replacement
- Pan gasket inspection
- Solenoid resistance test
- Shift linkage lubrication
- Mount condition check
Use only Nissan Matic-D or equivalent ATF
- Transmission flush
- Valve body inspection
- Torque converter test
- Seal condition check
- Electronic control module diagnostics
Perform pressure testing during this service
- Complete overhaul inspection
- Clutch pack replacement
- Bushing and bearing check
- Oil pump performance test
- Shift solenoid replacement
Consider professional transmission rebuild at this interval
Common Questions
Find answers to common questions about torque specifications
Q1 What are the compatibility details for the 4R01 transmission in the 1997-2003 Infiniti QX4?
What are the compatibility details for the 4R01 transmission in the 1997-2003 Infiniti QX4?
The 4R01 transmission is specifically designed for the 1997-2003 Infiniti QX4, ensuring seamless integration with its 3.5L V6 engine. It supports both 2WD and 4WD configurations, making it versatile for various driving conditions. Compatibility extends to models within the specified years, but modifications may be required for earlier or later models. Always verify the vehicle’s VIN and production date before installation to ensure proper fitment.
Q2 What maintenance is required for the 4R01 transmission in the Infiniti QX4?
What maintenance is required for the 4R01 transmission in the Infiniti QX4?
Regular maintenance for the 4R01 transmission includes fluid changes every 30,000 to 60,000 miles, depending on driving conditions. Inspect the transmission pan for leaks and replace the filter during fluid changes. Monitor for unusual noises or shifting issues, which may indicate internal wear. Use only manufacturer-recommended fluids to ensure optimal performance and longevity. Periodic checks of the transmission mounts and linkage are also advised.
Q3 How do I replace the 4R01 transmission in my 1997-2003 Infiniti QX4?
How do I replace the 4R01 transmission in my 1997-2003 Infiniti QX4?
To replace the 4R01 transmission, first, disconnect the battery and drain the transmission fluid. Remove the driveshaft, exhaust components, and crossmember supporting the transmission. Detach the torque converter and unbolt the transmission from the engine. Carefully lower the transmission using a jack and remove it from the vehicle. Install the new transmission by reversing the steps, ensuring all connections are secure and torqued to specifications. Refill with the correct fluid and test for proper operation.
Q4 What are common troubleshooting steps for the 4R01 transmission?
What are common troubleshooting steps for the 4R01 transmission?
Common issues with the 4R01 transmission include delayed shifting, slipping gears, and fluid leaks. Start by checking the transmission fluid level and condition. Inspect for external leaks around the pan, seals, and cooler lines. Use a diagnostic scanner to check for error codes. If the issue persists, inspect the valve body, solenoids, and internal components for wear or damage. Addressing these issues early can prevent more significant transmission problems.
Q5 How can I optimize the performance of the 4R01 transmission in my Infiniti QX4?
How can I optimize the performance of the 4R01 transmission in my Infiniti QX4?
To optimize the 4R01 transmission, use high-quality synthetic transmission fluid designed for modern automatic transmissions. Regularly service the transmission and replace the filter to maintain clean fluid flow. Ensure the cooling system is functioning correctly to prevent overheating. Avoid aggressive driving and excessive towing to reduce wear. Consider upgrading the transmission cooler for improved thermal management, especially in hot climates or under heavy loads.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Infiniti QX4 1997-2003 Service Manual
Coming SoonComprehensive guide covering all aspects of maintenance, repair, and troubleshooting for the Infiniti QX4, including the 4R01 transmission.
4R01 Transmission Technical Bulletin
Coming SoonTechnical service bulletin detailing common issues, updates, and recommended fixes for the 4R01 transmission in the Infiniti QX4.
Infiniti QX4 Transmission Parts Catalog
Coming SoonDetailed catalog of OEM and aftermarket parts for the 4R01 transmission, including filters, gaskets, and seals.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.
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