The Isuzu Bighorn (also known as the Trooper) from 1986-1991 represented a generation of rugged, capable 4x4s that were a hit in New Zealand. Known for their robust construction and off-road prowess, these vehicles are still popular choices for those seeking adventure on a budget. However, age brings its own set of challenges.
Common issues include wear in the front suspension, particularly the ball joints and idler arm. Diesel models are prone to injector pump issues. Overheating can occur, so inspect the cooling system thoroughly. Rust is a significant concern, affecting the chassis, body panels, and floor pans.
WOF tips
Check for rust in the usual trouble spots, especially around the chassis rails, sills, and wheel arches. The condition of the suspension components is critical for WOF compliance. Ensure all lights are functioning correctly, including the high beams and fog lights (if equipped). Pay close attention to brake performance, as these vehicles can be heavy.
About the Isuzu Bighorn TD
These Bighorns/Troopers offered a choice of petrol and diesel engines, with the diesel being particularly popular for its fuel efficiency and torque. Four-wheel drive was standard, as well as a high-low transfer case. The live axle front suspension and sturdy chassis made this a competent off-roader. Interior comfort was basic but functional. Many units were used extensively for off-roading so expect wear and tear.
Questions owners ask
What are the common rust spots I should check on a 1986-1991 Isuzu Bighorn/Trooper before buying one in New Zealand?
Rust is a significant concern for these models. You should thoroughly inspect the chassis rails, sills, wheel arches, and floor pans, as these are common trouble spots for the 1986-1991 Isuzu Bighorn/Trooper.
My 1986-1991 Isuzu Bighorn/Trooper diesel is running rough. What are common issues with the diesel engine?
Diesel models of the 1986-1991 Isuzu Bighorn/Trooper are prone to injector pump issues. It's also worth checking the cooling system, as overheating can occur and impact engine performance.
What suspension problems are common on the 1986-1991 Isuzu Bighorn/Trooper, especially if it's been used off-road?
Due to extensive off-road use, wear in the front suspension is common, particularly with the ball joints and idler arm. The sturdy chassis and live axle front suspension are capable, but these components can wear out.
What should I pay close attention to for a WOF inspection on my 1986-1991 Isuzu Bighorn/Trooper?
For a WOF, pay close attention to rust, especially around the chassis rails, sills, and wheel arches. The condition of the front suspension components (ball joints, idler arm) is critical. Ensure all lights, including high beams and fog lights (if equipped), are functioning, and check brake performance due to the vehicle's weight.
Where can I get replacement ball joints for my 1986-1991 Isuzu Bighorn/Trooper in NZ?
CARFIX stocks 56 SKUs for the 1986-1991 Isuzu Bighorn/Trooper. You can find replacement ball joints and other suspension components through CARFIX for your vehicle.
How often should I service my 1986-1991 Isuzu Bighorn/Trooper?
The recommended service interval for the 1986-1991 Isuzu Bighorn/Trooper is every 10,000km.