The Jeep Grand Cherokee (ZJ) 4.0i 4×4 Automatic, produced from 1993 to 1994, represented a significant step forward for the Jeep brand, blending off-road capability with on-road comfort. This variant occupied a middle ground within the ZJ lineup, offering a balance between the base 4.0L engine and the more powerful 5.2L V8. It was positioned as a versatile family SUV, appealing to buyers who desired four-wheel drive functionality without the higher price tag or fuel consumption of the larger engine options. The ZJ generation was the first to bear the “Grand Cherokee” name, signifying a move upmarket for Jeep and establishing a new benchmark in the SUV segment.
Technical Specifications
| Brand | Jeep |
| Model | Grand Cherokee |
| Generation | Grand Cherokee I (ZJ) |
| Type (Engine) | 4.0i (192 Hp) 4×4 Automatic |
| Start of production | 1993 |
| End of production | 1994 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 15.7 l/100 km (15 US mpg, 18 UK mpg, 6.4 km/l) |
| Fuel consumption (extra urban) | 11.8 l/100 km (19.9 US mpg, 23.9 UK mpg, 8.5 km/l) |
| Fuel consumption (combined) | 13.8 l/100 km (17 US mpg, 20.5 UK mpg, 7.2 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 11.1 sec |
| Acceleration 0 – 62 mph | 11.1 sec |
| Acceleration 0 – 60 mph | 10.5 sec |
| Weight-to-power ratio | 8.7 kg/Hp, 115.2 Hp/tonne |
| Weight-to-torque ratio | 5.5 kg/Nm, 183 Nm/tonne |
| Power | 192 Hp @ 4750 rpm |
| Power per litre | 48.5 Hp/l |
| Torque | 305 Nm @ 4000 rpm (224.96 lb.-ft. @ 4000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | ERH |
| Engine displacement | 3956 cm3 (241.41 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 98.4 mm (3.87 in.) |
| Piston Stroke | 86.7 mm (3.41 in.) |
| Compression ratio | 8.8:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHV |
| Engine oil capacity | 5.7 l (6.02 US qt | 5.02 UK qt) |
| Coolant capacity | 11.4 l (12.05 US qt | 10.03 UK qt) |
| Kerb Weight | 1667 kg (3675.11 lbs.) |
| Fuel tank capacity | 87 l (22.98 US gal | 19.14 UK gal) |
| Length | 4489 mm (176.73 in.) |
| Width | 1758 mm (69.21 in.) |
| Height | 1648 mm (64.88 in.) |
| Wheelbase | 2690 mm (105.91 in.) |
| Front track | 1473 mm (57.99 in.) |
| Rear track | 1473 mm (57.99 in.) |
| Ride height (ground clearance) | 202 mm (7.95 in.) |
| Drag coefficient (Cd) | 0.45 |
| Minimum turning circle | 11.7 m (38.39 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears | 4 |
| Gearbox type | Automatic transmission |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 215/75 R15 |
| Wheel rims size | 15 |
Powertrain & Engine Architecture
The heart of the Grand Cherokee 4.0i was the 4.0-liter (3956 cc) inline-six cylinder engine, designated the ERH code. This engine was a descendant of the AMC 242 cubic inch inline-six, which had been a mainstay of Jeep vehicles for decades. The ERH featured a cast iron block and cylinder head, with a two-valve-per-cylinder overhead valve (OHV) configuration. Fuel delivery was handled by a multi-port fuel injection system, contributing to improved efficiency and drivability compared to earlier carbureted versions. The engine produced 192 horsepower at 4750 rpm and 225 lb-ft of torque at 4000 rpm. The four-speed automatic transmission (typically the 42RE) was chosen for its ease of use and suitability for both on-road cruising and moderate off-road conditions. This transmission featured electronic control for smoother shifting and improved fuel economy.
Driving Characteristics
The 4.0L automatic Grand Cherokee offered a comfortable and capable driving experience. Acceleration was adequate, with a 0-60 mph time of around 10.5 seconds, but it wasn’t particularly sporty. The automatic transmission, while smooth, could feel somewhat sluggish during quick acceleration or when attempting to pass on the highway. The gear ratios were optimized for fuel economy and towing capacity rather than outright performance. Compared to the 5.2L V8, the 4.0L offered better fuel economy, but at the expense of significant power. The 4.0L was also noticeably more responsive than the later 2.5L four-cylinder options, making it a more practical choice for everyday driving and towing. The four-wheel drive system, selectable via a dashboard-mounted lever, provided enhanced traction in slippery conditions and allowed for moderate off-road excursions.
Equipment & Trim Levels
The Grand Cherokee 4.0i 4×4 Automatic typically came standard with features such as air conditioning, power windows and locks, cruise control, and an AM/FM stereo. Interior upholstery was usually cloth, with optional leather available. Higher trim levels, such as the Laredo, added features like upgraded sound systems, alloy wheels, and additional exterior trim. Optional extras included a sunroof, rear air conditioning, and a heavy-duty towing package. The dashboard layout was functional and straightforward, with easy-to-read gauges and well-placed controls.
Chassis & Braking
The ZJ Grand Cherokee utilized a body-on-frame construction, providing a robust and durable platform. The suspension consisted of a traditional setup with coil springs, shock absorbers, and stabilizer bars. Front suspension was independent, while the rear featured a solid axle with coil springs. Brakes were ventilated discs on all four wheels, providing adequate stopping power for the vehicle’s weight. An anti-lock braking system (ABS) was standard, enhancing safety and control during emergency braking situations. The rear stabilizer bar thickness was generally smaller than those found on V8 models, reflecting the lower weight and power output of the 4.0L engine.
Market Reception & Comparison
The Grand Cherokee 4.0i 4×4 Automatic was generally well-received by automotive critics. It was praised for its comfortable ride, spacious interior, and capable four-wheel drive system. However, some reviewers noted the engine’s lack of outright power and the automatic transmission’s occasional sluggishness. Compared to the 5.2L V8, the 4.0L offered significantly better fuel economy – around 17 mpg combined versus 14 mpg for the V8 – making it a more economical choice for daily driving. Reliability was generally good, although the automatic transmission could be prone to issues if not properly maintained. The 4.0L engine itself was known for its durability and longevity.
Legacy
The Jeep Grand Cherokee ZJ 4.0i 4×4 Automatic remains a popular choice among enthusiasts and collectors today. The 4.0L inline-six engine is renowned for its reliability and relatively simple maintenance requirements. While not as powerful as the V8 models, the 4.0L offers a good balance of performance, fuel economy, and durability. Parts availability is generally good, and the ZJ Grand Cherokee is relatively easy to work on for experienced DIY mechanics. These vehicles are often sought after for their off-road capability and classic Jeep styling, and well-maintained examples can command a reasonable price in the used car market.
