1998 Jeep 4.0 Engine Specifications
The 1998 Jeep 4.0 engine, also known as the AMC 4.0, is a well-regarded inline-six engine that has gained a reputation for its durability and performance. Below are the detailed specifications for this engine.
| Specification | Details |
|---|---|
| Engine Type | Inline 6-cylinder |
| Displacement | 4.0 liters (242 cubic inches) |
| Horsepower | 190 hp @ 4,600 rpm |
| Torque | 235 lb-ft @ 3,200 rpm |
| Compression Ratio | 8.8:1 |
| Fuel System | Multi-port fuel injection |
| Ignition System | Distributor-based |
| Valvetrain | SOHC (Single Overhead Cam) |
| Fuel Type | Regular unleaded (87 octane) |
| Weight | Approximately 450 lbs |
Engine Configuration
The 1998 Jeep 4.0 engine features a robust inline-six configuration, which is known for its smooth operation and balance. This engine design offers several advantages:
- Balance: The inline-six configuration provides natural balance, reducing vibrations and enhancing smoothness.
- Torque: The engine delivers strong low-end torque, making it suitable for off-road and towing applications.
- Durability: The 4.0 engine is built with a cast-iron block and aluminum cylinder head, contributing to its longevity.
The engine’s design includes a single overhead cam (SOHC) configuration, which simplifies the valvetrain and contributes to its reliability. The multi-port fuel injection system ensures efficient fuel delivery, optimizing performance and fuel economy.
Engine Oil Specifications
Proper lubrication is crucial for the longevity and performance of the 1998 Jeep 4.0 engine. Here are the recommended engine oil specifications:
| Specification | Details |
|---|---|
| Oil Type | SAE 5W-30 |
| Oil Capacity (with filter) | 6 quarts (5.7 liters) |
| Oil Filter | Chrysler part number 53010444AA or equivalent |
Service Intervals
Regular maintenance is key to keeping the 1998 Jeep 4.0 engine running smoothly. Here are the recommended service intervals for oil changes and other essential maintenance tasks:
Oil Change Intervals
- Every 3,000 to 5,000 miles (4,800 to 8,000 km) or every 3 months, whichever comes first.
- Use high-quality oil and filter to ensure optimal performance.
Other Maintenance Tasks
In addition to regular oil changes, the following maintenance tasks should be performed at specified intervals:
- Air Filter Replacement: Every 15,000 to 30,000 miles (24,000 to 48,000 km).
- Fuel Filter Replacement: Every 20,000 to 30,000 miles (32,000 to 48,000 km).
- Spark Plug Replacement: Every 30,000 miles (48,000 km).
- Coolant Flush: Every 2 years or 30,000 miles (48,000 km).
- Transmission Fluid Change: Every 30,000 to 60,000 miles (48,000 to 96,000 km).
Conclusion
The 1998 Jeep 4.0 engine is a reliable and powerful option for Jeep enthusiasts and off-road adventurers. With its solid specifications, durable configuration, and straightforward maintenance requirements, it remains a popular choice among Jeep owners. Regular service and attention to oil specifications will ensure that this engine continues to perform well for years to come.
0 Comments