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1986 Isuzu Trooper

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1986 Trooper.

The 1986 Isuzu Trooper recorded a total of 18 owner complaints, with seat belts standing out as the top concern, and was subject to two recalls. In the broader model complaint history spanning 1990 to 2002, annual totals ranged from a high of 81 in 1999 to a low of 12 in 2002, placing this 1986 figure near the lower end of that spectrum and indicating a comparatively modest number of reported issues for the model year.

Model year2002 2001 1995 1994 1993 1992 1991 1990 1986

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine GL-5 in the differential.

Lubricants & capacities

Differential Gear Oil	GL-5
Differential Gear Oil Capacity	3.2 Pints,
Power Steering Fluid	ATF
Transfer Case Fluid	5W-30 · API
Transfer Case Fluid Capacity	1.6 Pints

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter at 7,500 mi; coolant every 7,500 mi. The big-interval services (every 7,500 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

At 7,500 mi	Engine Oil Filter (replace) · Transfer Case Assembly (drain & refill) · Transmission Assembly (drain & refill)
Every 7,500 mi	Brake Hydraulic System (inspect fluid level) · Brake Line (inspect) · Engine Coolant System (leak inspection) · Engine Oil (drain & refill) · Exhaust System (Complete) (inspect) · Tire & Wheel Assembly (inspect)
At 15,000 mi	Drive Axle Assembly (drain & refill)
Every 15,000 mi	Accessory Drive Belt (inspect) · Brake Drum Assembly (inspect) · Brake Pedal Assembly (inspect) · Clutch Pedal Assembly (inspect) · Driveshaft Slip Yoke (lubricate) · Driveshaft U-Joint (lubricate)
Every 30,000 mi	Air Injection System (inspect) · Choke System (inspect) · Distributor Vacuum Advance (inspect) · Drive Axle Assembly (drain & refill) · EGR System (inspect) · Engine Air Filter Element (replace)
Every 45,000 mi	Power Steering Line (inspect)
At 60,000 mi	Drive Axle Assembly (drain & refill)
Every 60,000 mi	Timing Belt (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The 1986 Isuzu Trooper is not included in the federal record provided, which begins with 1990 data, making a direct year-by-year comparison impossible. However, the 1986 model shows seat belt complaints as its top issue (10 complaints), with no crash or fire complaints filed. The broader record from 1990 onward reveals that complaints generally remained below 61 per year, with recalls fluctuating between zero and three, and investigations declining sharply after 1992. Technical Service Bulletins (TSBs) increased substantially over the period, from 5 in 1990 to a peak of 49 in 2000, suggesting growing complexity in the vehicle population's maintenance needs over time. Since the 1986 model predates all available federal data, its reliability cannot be benchmarked against the documented generation. Concrete takeaway: The 1986 Trooper has no crash or fire complaints on record, but without federal data for that model year, buyers cannot assess how it compares to later models in recalls or investigations—making thorough pre-purchase inspection and title/lien check especially critical for this generation.

Open recalls

NHTSA campaigns

Service bulletins

Manufacturer communications

ODI investigations

Office of Defects Investigation

Owner complaints

0 involved a crash · 0 a fire

Owner complaints by model year NHTSA · this generation & adjacent

’90 ’91 ’92 ’93 ’94 ’95 ’96 ’97 ’98 ’99 ’00 ’01 ’02

Owner complaints filed with NHTSA, by component

All 18 complaints on record, top 6 components.

Seat Belts10

Engine & Engine Cooling2

Seats2

Visibility2

Latches/Locks/Linkages1

Structure1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 2 campaigns on record for this vehicle.

92V093000Structure:Body:Door:Hinge And AttachmentsReported 27/07/1992

TRUCKS USED IN THE SALT-BELT STATES CAN HAVE ACCUMULATED CORROSION IN THE HINGES OF THE REAR DOORS. IF THE VEHICLES ALSO HAVE MISALIGNED DOOR LATCHES AND STRIKERS, IT IS POSSIBLE TO CLOSE THE DOORS IN A "FALSE LATCH"… Remedy: CHECK THE DOOR LATCHES AND STRIKERS FOR CORRECT ALIGNMENT AND REPAIR IF NECESSARY; ALSO INSPECT REAR DOOR HINGES FOR CORROSION AND REPLACE IF NECESSARY.

93E023000Trailer HitchesReported 22/07/1993

THE WELD ON THE RECEIVER UNIT OF THE TRAILER HITCH CAN BREAK. Remedy: REPLACE THE TRAILER HITCH.

Technical service bulletins NHTSA · verified

Showing 3 of 3 bulletins on record with NHTSA.

Bulletin	Date	Component	Summary
IB13-R-001G	2023-05-08	Unknown Or Other	This bulletin outlines the procedures for using the Alpine Exchange Program (the…
WB13-X-001B	2022-08-30	Equipment	Isuzu Commercial Truck of America, Inc. (ICTA) is providing the following procedural…
WB13-X-001A	2022-08-02	Equipment	Isuzu Commercial Truck of America, Inc. (ICTA) is providing the following procedural…