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 4ZE1
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 some common problems I should look for when buying a used Isuzu Bighorn/Trooper (1986-1991) in New Zealand?
When buying a used 1986-1991 Isuzu Bighorn/Trooper, prioritize checking for rust, especially on the chassis rails, sills, and wheel arches. Front suspension wear, particularly in the ball joints and idler arm, is common. For diesel models, be aware of potential injector pump issues. Overheating can also be a problem, so inspect the cooling system thoroughly.
Where can I get replacement suspension parts for my 1986-1991 Isuzu Bighorn/Trooper in NZ?
CARFIX stocks 299 SKUs for the Isuzu Bighorn/Trooper (1986-1991), including a range of suspension components like ball joints and idler arms. Check the CARFIX website or visit a store to find the specific parts you need.
What should I check on my Isuzu Bighorn/Trooper (1986-1991) to pass a Warrant of Fitness (WOF) in New Zealand?
For a WOF, thoroughly inspect your Bighorn/Trooper for rust, especially around the chassis rails, sills, and wheel arches. The suspension components must be in good condition. Ensure all lights, including high beams and fog lights (if fitted), are working. Brake performance is also critical due to the vehicle's weight.
How often should I service my Isuzu Bighorn/Trooper (1986-1991)?
The recommended service interval for the Isuzu Bighorn/Trooper (1986-1991) is every 10,000km. Regular servicing will help maintain its reliability, especially given its age and potential for off-road use.
Are there any common issues specific to the diesel engine in the Isuzu Bighorn/Trooper (1986-1991)?
Yes, diesel models of the Isuzu Bighorn/Trooper (1986-1991) are known to have potential issues with the injector pump. It's important to ensure the injector pump is functioning correctly to avoid performance problems.
My Isuzu Bighorn/Trooper (1986-1991) is overheating. What are the likely causes?
Overheating in the Isuzu Bighorn/Trooper (1986-1991) can be caused by several factors, including a faulty thermostat, a clogged radiator, a failing water pump, or leaks in the cooling system. A thorough inspection of the entire cooling system is recommended.
Are there any DIY guides available for working on my Isuzu Bighorn/Trooper (1986-1991)?
Yes, CARFIX has 5 DIY videos available to help you maintain your Isuzu Bighorn/Trooper (1986-1991). These guides can assist with common maintenance tasks and repairs.