Defect
THE WELD ON THE RECEIVER UNIT OF THE TRAILER HITCH CAN BREAK.
Consequence
IF THE FAILURE OCCURS, THE TRAILER CAN SEPARATE FROM THETOWING VEHICLE, AND COULD RESULT IN A VEHICLE CRASH WITHOUT WARNING.
Remedy
REPLACE THE TRAILER HITCH.
1990 Isuzu Trooper problems
Verdict · NHTSA data
A typical year for this model
The 1990 Isuzu Trooper sits mid-pack among Trooper years: 30 NHTSA complaints against a model median of roughly 30, with 3 recalls and 6 closed investigations. Complainants reported 11 injuries in total across these filings.
Engine leads the complaint categories with 8 reports (27% of the total).
30
NHTSA complaints
3
Recalls
6
Investigations
3
Crash-involved
5
Fires reported
11
Injuries
0
Deaths
—
NCAP overall
How does 1990 compare to other Trooper years?
What are the most common 1990 Isuzu Trooper problems?
| Component | Complaints | Share | vs prior year |
|---|---|---|---|
| Engine | 8 | 27% | ▲ up |
| Transmission | 4 | 13% | ▲ up |
| Tires & Wheels | 3 | 10% | — flat |
| Body & Structure | 3 | 10% | ▲ up |
| Electrical System | 3 | 10% | ▲ up |
| Brakes | 2 | 7% | ▼ down |
| Fuel System | 2 | 7% | ▲ up |
| Speed Control | 1 | 3% | new |
| Steering | 1 | 3% | new |
| Seats | 1 | 3% | — flat |
| Seat Belts | 1 | 3% | ▼ down |
| Climate Control (A/C & Heat) | 1 | 3% | new |
Does the 1990 Isuzu Trooper have recalls?
3 NHTSA recall campaigns on file. Recall repairs are free at franchised dealers.
Defect
IMPROPERLY INSTALLED HOSE ON THE OIL COOLER COULD COME IN CONTACT WITH THE EXHAUST MANIFOLD AND COULD MELT.
Consequence
ENGINE OIL COULD LEAK OUT WITH POTENTIAL FOR ENGINESEIZURE AND DAMAGE AND COULD RESULT IN A FIRE.
Remedy
PROPERLY INSTALL COOLER HOSE CLIP TO PREVENT CONTACT WITH EXHAUST MANIFOLD.
Defect
PUTTING IN MORE TRANSMISSION OIL THAN SPECIFIED CAN CAUSE OIL TO BLEED THROUGH AIR GROOVE ON TO THE EXHAUST MANIFOLD IF OIL TEMPERATURE RISES.
Consequence
THIS COULD CAUSE SMOKE EMISSION FROM THE MANIFOLD, WHICHCOULD IGNITE RUBBER HOSES AND RESULT IN A FIRE.
Remedy
REPLACE OIL LEVEL GAUGE AND NOTIFY OWNERS TO USE ONLY THE SPECIFIED AMOUNT OF AUTOMATIC TRANSMISSION FLUID.
Consumer complaints filed with NHTSA
Representative excerpts, cleaned of personal information. These are consumer statements, not verified defects.
“MY 1990 ISUZU TROOPER, STANDARD, INTENSIFIES ITS REVS IN IDLE SUDDENLY. SOMETIMES IT GOES UP AND DOWN, UP AND DOWN... AND I CAN SEE HOW THE TEMP GAUGE RISES QUICKLY. MY MOMENTARY SOLUTION IN SUCH CASES IS TO STOP THE CAR AND SHUT OFF THE IGNITION AND WAIT, SOMETIMES THIS LEAVES ME SOME MINUTES…”
“WHILE DRIVING, PULLED OFF TO REST STOP, NOTICED SMOKE COMING FROM ENGINE AS SLOWING DOWN, AT REST STOP, OBSERVED FLAMES COMING THROUGH CREVICE OF VEHICLE, ANOTHER MOTORIST USED FIRE EXTINGUISHER. VEHICLE AT REPAIR SHOP. WAS INFORMED SEAL WENT OUT IN TRANSMISSION. *AK”
“CONSUMER PULLED INTO PARKING LOT, AND NOTICED SMOKE FROM FRONT OF VEHICLE. STOPPED VEHICLE , TURNED OFF ENGINE, AND SAW FLAMES WERE COMING FROM UNDER FENDER ON PASSENGER SIDE. VEHICLE WAS TOTALLED.*AK”
“EXPERIENCED A ROLLOVER WHILE DRIVING DOWN HILL, THE CAR STARTED TO FISHTAIL AND TURNED AROUND INTO ON COMING TRAFFIC AND THE TROOPER ROLLED OVER ONTO THE RIGHT SIDE. CONSUMER WAS INJURED IN ACCIDENT. *SLC”
“THE BACK LEFT TIRE WAS DEFECTIVE (STEEL SHOWING) CAUSING THE DRIVER TO LOOSE CONTROL AND RUN ACROSS THE S/B LANE OF TRAFFIC AND STRUCK A GUARDRAIL, THE VEHICLE THE OVERTURNED GOING OVER THE GOUARDRAIL DOWN INTO A CREEK BED, THE VEHICLE THEN FLIPPED REAR OVER FRONT ONE COMPLETE TIME, ALL 4 OCCUPANTS…”
1990 Isuzu Trooper — common questions
Is the 1990 Isuzu Trooper reliable?
It is close to typical for the Trooper: 30 NHTSA complaints, 3 recalls, and 6 investigations on file.
What are the most common 1990 Trooper problems?
According to NHTSA complaint data, the leading problem areas are engine (8 complaints), transmission (4 complaints), body & structure (3 complaints).
Does the 1990 Isuzu Trooper have recalls?
Yes — NHTSA lists 3 recall campaigns affecting the 1990 Isuzu Trooper. Recall repairs are free at franchised dealers; check the VIN at nhtsa.gov/recalls to confirm the work was done.
Is the 1990 Isuzu Trooper under NHTSA investigation?
NHTSA opened 6 investigations into this model year; all are now closed.
Which Isuzu Trooper years should you avoid?
Based on complaint rates and open investigations, the Trooper years to avoid are 1999, 1991, 1996, 1995, 2000, 1994, 1998. The cleanest record among Trooper years belongs to 1984.
Related
Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.
Compiled by Sharon Ben-Moshe, Founder.