Engines Covered -
● 2.2 litre "X22SE" DOHC 4 Cylinder
● 2.3 litre "4ZD1" SOHC 4 Cylinder
● 2.6 litre "4ZE1" SOHC V6
● 3.1 litre V6 OHV
● 3.2 litre SOHC & DOHC "6VD1"
● Introductory Pages
About this Manual; Introduction; Vehicle Identification Numbers; Buying Parts; Maintenance Techniques, Tools and Working Facilities; Jacking and Towing; Booster Battery (jump) starting; Automotive Chemicals and Lubricants; Conversion Factors; Safety First!; Troubleshooting
● Tune-Up & Routine Maintenance
● 2.3 litre & 2.6 litre Four Cylinder Engines
● 2.2 litre Four Cylinder Engine
● 3.1 litre V6 Engine
● 3.2 litre V6 Engine
● General Engine Overhaul Procedures
● Cooling, Heating and Air Conditioning Systems
● Fuel and Exhaust Systems (Carburetted Engines)
● Fuel and Exhaust Systems (Fuel-Injected Engines)
● Engine Electrical Systems
● Emissions and Engine Control Systems
● Manual Transmission
● Automatic Transmission
● Transfer Case
● Clutch and Driveline
● Suspension and Steering Systems
● Chassis Electrical System
● Wiring Diagrams
NOTE: Only maintenance, adjustment, minor repair procedures plus removal and installation are described for the transmissions.
Covers everything you need to know, step by step procedures, hundreds of photographs and illustrations, routine maintenance, wiring diagrams, repairs and overhauls, and what tools to buy. Gregory's manuals are based on an actual vehicle stripdown and are researched and written by automotive engineers with vast experience.
The Isuzu Trooper was a mid-size SUV produced by the Japanese automaker Isuzu between 1981 and 2005. It was exported worldwide as the Isuzu Bighorn, Isuzu Trooper, Isuzu Trooper II , Caribe 442, Acura SLX, Chevrolet Trooper, Subaru Bighorn, Honda Horizon, Opel/Vauxhall Monterey, Holden Jackaroo, and Holden Monterey.
There were three generations of Trooper, 1981–1991, 1992–1997 and 1998–2005, after which Isuzu ceased exporting the model. It began production as a rather basic and somewhat underpowered on- and off-road vehicle, offered only with 4-cylinder motor, 5-speed manual transmission, and part-time four-wheel drive. The first generation evolved to add both amenities and luxuries, including optional air-conditioning, power windows, and a more powerful V6 engine. The second generation was more refined yet, available in two-wheel drive as well as four.
In 1991 for the 1992 model year, Isuzu completely redesigned the Trooper to keep pace with changes in the SUV marketplace, making it larger, more powerful, and more luxurious. These 5,500 lb (2,500 kg). vehicles used a 3.2 L single overhead cam 177 PS (130 kW; 175 hp) (SOHC) petrol engine, with an available 3.2 L dual overhead cam (DOHC) version rated at 193 PS (142 kW; 190 hp). A SOHC 3.2 L engine producing 193 PS (142 kW; 190 hp) was introduced in 1996, replacing the prior engines. Most models still used a part-time four-wheel-drive system, which required stopping the vehicle to engage and disengage the front axle. Starting with the 1996 SE Limited Troopers came with shift on the fly engagement.
From 1992, the UBS Series ("Holden Jackaroo", as it is known in Australia) was available with a pushrod overhead valve (OHV) 3.1 L in-line 4-cylinder intercooled turbodiesel (designated 4JG2) producing 114 PS (84 kW; 112 hp) at 3,600 rpm, and 260 N·m (192 lb·ft) at 2000 rpm. It was offered as an alternative to the 3.2-litre petrol, as a more rugged and fuel-efficient option for towing and heavy-duty operation. The diesel-powered Jackaroo was available with a five-speed manual transmission and manual front hubs only coupled to a part-time 4wd system with open front and limited slip rear differentials. The 2.283:1 low range can be selected on the move, providing the front hubs are engaged, at up to 15 km/h 1st gear, 25 km/h 2nd gear and 40 km/h 3rd to 5th gears. (The 3.2-litre V6 petrol engine version was also available with an optional four-speed auto and auto locking front hubs.) The same diesel engine was also available in the U.K. and other markets with a belt-driven overhead camshaft, which developed slightly more power. After 1998, and the introduction of the 4JX1 3.0-litre diesel engine, a four-speed automatic transmission was made available in addition to the five-speed manual transmission.
During this period, Isuzu and Honda had a working arrangement that allowed Honda to sell a rebadged Trooper. In Japan it was known as the Honda Horizon from 1994 to 1999, and as the Acura SLX in the United States from 1996 to 1999.
Beginning in 1998, Troopers in the US were equipped with a DOHC 3.5 L engine producing 215 hp (160 kW; 218 PS). European and Asian buyers could opt for the diesel engine option of the 4JG2 3.1 L (later superseded by the more problematic 4JX1 3.0 L of 159 PS/117 kW). A Borg-Warner torque-on-demand all-wheel-drive system was introduced, along with freshened styling. The grille was redesigned again for the 2000 model year.
Transmission options included a five-speed manual transmission, the Aisin AR5 and the electronically controlled 4L30E four-speed automatic. The 4l30E was fitted with both a "power" shift feature allowing the gearbox to take better advantage of the engine's power by adjusting the shifting nature and a "winter" mode permitting third gear starts for added stability in slippery conditions. The 2000 to 2002 Trooper included a feature called "Grade Logic" which allowed the transmission to automatically downshift on steep grades in order to slow the vehicle down.