WHILE DRIVING COULD HEAR NOISE COMING FROM REAR LEFT TIRE WHERE TREAD HAD SEPARATED. THEN, PULLED TO THE SIDE OF ROAD AND TIRE STILL HAD AIR IN IT. *AK
1991 Isuzu Trooper
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 1991 Isuzu Trooper do not stand out strongly from the model-year median of 25.
About this comparison →How this year compares
Owner complaints by model year
Compare all Trooper years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 1 of 57 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Engine And Engine Cooling. Review the 13 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Power Train. Review the 12 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Wheels. Review the 8 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
57 reportsNO SUMMARY LISTED FOR ABOVE VEHICLE. *AK
TRANSMISSION ENGINE CYLINDER (4TH CYLINDER) FAILED. NLM
THE TROOPER HAD AN OIL LEAK AND THE ENGINE WENT ON FIRE. MY CAR IS TOTALED. I HAVE BEEN RESEARCHING AND SEE A PROBLEM WITH THIS MODEL AND YEAR. HELP! I WANT ISUZU TO PAY FOR MY LOSE EVEN IF I WAS THE SECOND OWNER OR BOB CIASULLI USED CARS FOR SELLING ME THIS CAR WHICH HAD A RECALL ON AND PUT MYSELF AND MY 5 YEAR OLD SON IN D…
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THE TROOPER HAD AN OIL LEAK AND THE ENGINE WENT ON FIRE. MY CAR IS TOTALED. I HAVE BEEN RESEARCHING AND SEE A PROBLEM WITH THIS MODEL AND YEAR. HELP! I WANT ISUZU TO PAY FOR MY LOSE EVEN IF I WAS THE SECOND OWNER OR BOB CIASULLI USED CARS FOR SELLING ME THIS CAR WHICH HAD A RECALL ON AND PUT MYSELF AND MY 5 YEAR OLD SON IN DANGER.
THE TRANSMISSION HAS BEEN SHIFTING ROUGH SINCE THE VEHICLE WAS PURCHASED NEW IN 1991. THE FIRST INCIDENT WAS COVERED UNDER WARRANTY AND SOME MINOR REPAIRS/ADJUSTMENTS WERE MADE BY THE DEALER. THE SECOND INCIDENT REQUIRED MORE EXTENSIVE REPAIRS TO THE TRANSMISSION AND I WAS REQUIRED TO PAY A PORTION OF THE REPAIRS SINCE THE WARR…
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THE TRANSMISSION HAS BEEN SHIFTING ROUGH SINCE THE VEHICLE WAS PURCHASED NEW IN 1991. THE FIRST INCIDENT WAS COVERED UNDER WARRANTY AND SOME MINOR REPAIRS/ADJUSTMENTS WERE MADE BY THE DEALER. THE SECOND INCIDENT REQUIRED MORE EXTENSIVE REPAIRS TO THE TRANSMISSION AND I WAS REQUIRED TO PAY A PORTION OF THE REPAIRS SINCE THE WARRANTY HAD EXPIRED BY SOME 2-3K MILES. UPON THE THIRD INCIDENT WITH THE DRIVE TRAIN, I REQUESTED SOMEONE FROM THE MANUFACTURER TO INVESTIGATE. THEY REQUESTED THAT I KEEP A LOG FOR ABOUT TWO WEEKS OF THE CONDITIONS OCCURRING WHILE DRIVING. AFTER THIS PERIOD, THEY FELT THE PROBLEM WAS IN THE UNIVERSAL JOINTS. THESE WERE REPLACED AND THE PROBLEM STILL EXISTS. OTHER COMPLAINTS IN THE DRIVE TRAIN INVOLVE THE INABILITY OF THE CRUISE CONTROL TO MAINTAIN SPEED ON SLIGHT INCLINES AND WOULD SUFFER A GREAT REDUCTION IN SPEED ON A MODERATE TO STEEP INCLINE. WITH REGARDS TO THE FUEL INJECTION SYSTEM, A FUEL INJECTOR PLUG EXPLODED WHILE DRIVING AT HIGHWAY SPEEDS AND ERUPTED IN A FIRE THAT SELF-EXTINGUSHED. THE DEALER WAS INFORMED THE REPLACEMENT PART WAS NO LONGER AVAILABLE EVEN THOUGH THE VEHICLE WAS ONLY 7 YEARS OLD AT THE TIME. I PROCEEDED TO AN INDEPENDENT MECHANIC WHO WAS ABLE TO USE A GM PART (I FOUND OUT THAT THE DRIVE TRAIN AND ENGINE ARE ACTUALLY MADE IN WHOLE OR IN PART BY GM EVEN THOUGH MY VEHICLE IS AN ISUZU). THERE WAS A SECOND INCIDENT IDETICAL TO THE FIRST AND THE REPAIRS WERE AGAIN MADE. I HAD THE DEALER CONDUCT AN INVESTIGATION TO DETERMINE THE CAUSE OF THIS FAILURE. THEY WER ONLY ABLE TO DETERMINE THAT THE THERMOSTAT WAS NOT OPERATING AT FULL CAPACITY, BUT COULD NOT SAY THIS WAS THE CAUSE OF THE INJECTOR FAILURES.
TRANSMISSION FLUID LEAKING OUT THROUGH THE MEASURING DIPSTICK AND OVER THE ENGINE, CAUSING VEHICLE TO CATCH FIRE, RESULTING IN EXPLOSION AND MAJOR PROPERTY DAMAGE, PRIOR TO RECALL NOTICE (90V167000). *YC
I HAVE HAD A HISTORY (DOCUMENTED) OF ELECTRICAL/TRANSMISSION PROBLEMS WITH MY 1991 ISUZU TROOPER. ON 11/95, A FAULTY COMPUTER CONTROL PANEL CAUSED MY TRANSMISSION TO FAIL. I HAD A WEEK LEFT ON MY POWERTRAIN WARRANTY. TOOK THE VEHICLE TO ISUZU SANTA MONICA. THEY REPLACED THE COMPUTER PANEL UNDER WARRANTY ON 11/95. 15 MONTHS …
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I HAVE HAD A HISTORY (DOCUMENTED) OF ELECTRICAL/TRANSMISSION PROBLEMS WITH MY 1991 ISUZU TROOPER. ON 11/95, A FAULTY COMPUTER CONTROL PANEL CAUSED MY TRANSMISSION TO FAIL. I HAD A WEEK LEFT ON MY POWERTRAIN WARRANTY. TOOK THE VEHICLE TO ISUZU SANTA MONICA. THEY REPLACED THE COMPUTER PANEL UNDER WARRANTY ON 11/95. 15 MONTHS LATER, MY TRANSMISSION WAS FAILING AGAIN. SAME SYMPTOMS. THIS TIME, I SPENT $2,000 TO HAVE IT REPAIRED. ISUZU REFUSED TO TAKE RESPONSIBILITY. ON 6/12/99, WITHOUT WARNING, THE ENGINE STARTED SMOKING AND WITHIN SECONDS THE ENTIRE ENGINE WAS ON FIRE. THE FIRE DEPT. CAME AND PUT OUT THE FIRE. NOW THE TRUCK IS COMPLETELY TOTALED. I AM IN THE MIDST OF HAVING INSURANCE INSPECTORS DETERMINE THE CAUSE OF FIRE. I HAVE ALL OF MY SERVICE RECORDS FOR THE VEHICLE. IT WAS KEPT IN EXCELLENT CONDITION.
I JUST EXITED THE HOLLYWOOD FREEWAY WHEN SUDDENLY WITHOUT WARNING THE 1991 ISUZU TROOPER CAUGHT ON FIRE. I WAS ABLE TO GET TO THE SIDE OF THE ROAD, AND GET OUT.THE FIRE APPEARED TO BE UNDERNEATH THE TRUCK WITH GAS OR SOME OTHER LIQUID POURING OUT. THE PASSENGER SIDE FRONT TIRE MELTED AND EXPLODED, THEN THERE WAS A SECOND EXPLOSI…
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I JUST EXITED THE HOLLYWOOD FREEWAY WHEN SUDDENLY WITHOUT WARNING THE 1991 ISUZU TROOPER CAUGHT ON FIRE. I WAS ABLE TO GET TO THE SIDE OF THE ROAD, AND GET OUT.THE FIRE APPEARED TO BE UNDERNEATH THE TRUCK WITH GAS OR SOME OTHER LIQUID POURING OUT. THE PASSENGER SIDE FRONT TIRE MELTED AND EXPLODED, THEN THERE WAS A SECOND EXPLOSION. ALL THE PARTS OF THE ENGINE, BATTERY ETC. WERE IN FLAMES. TWO FIRE TRUCKS AND POLICE CARS WERE DIPATCHED. IT WAS A VERY BIG BLAZE. THE TRUCK HAS BEEN DECLARED A TOTAL LOSS. OUR INSURANCE COMPNAY CANNOT DETERMINE WHAT CAUSED THE FIRE SINCE THE DAMAGE IS SO EXTENSIVE. PLEASE HELP. I AM NOT SURE HOW TO PROCEED. I'D LIKE TO WARN OTHER OWNERS OF THIS VEHICLE AND CONTACT ISUZU. SO FAR, THEY HAVE NOT RETURNED MY PHONE CALLS.
CONSUMER DROVE VEHICLE INTO DRIVEWAY. THEN MOVED TRANSMISSION INTO WHAT HE THOUGHT WAS PARK, LOCKED IGNITION AND TOOK KEY OUT. WHEN HE WALKED AWAY VEHICLE ROLLED BACKWARDS, RESULTING IN A CRASH. PHONED ISUZU AND WAS TOLD THAT THEY DID NOT INSTALL AN IGNITION INTERLOCK DEVICE. OWNER BELIEVES THIS IS A NECESSARY SAFETY DEVIC…
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CONSUMER DROVE VEHICLE INTO DRIVEWAY. THEN MOVED TRANSMISSION INTO WHAT HE THOUGHT WAS PARK, LOCKED IGNITION AND TOOK KEY OUT. WHEN HE WALKED AWAY VEHICLE ROLLED BACKWARDS, RESULTING IN A CRASH. PHONED ISUZU AND WAS TOLD THAT THEY DID NOT INSTALL AN IGNITION INTERLOCK DEVICE. OWNER BELIEVES THIS IS A NECESSARY SAFETY DEVICE. *AK
ENGINE OIL COOLER HOSE TOUCHED EXHAUST MANIFOLD AND MELTED HOSE.
Official recalls
290V166000 · Engine And Engine Cooling:cooling System:hoses/lines/piping/fittings
Sep 20, 1990
IMPROPERLY INSTALLED HOSE ON THE OIL COOLER COULD COME IN CONTACT WITH THE EXHAUST MANIFOLD AND COULD MELT.
Consequence & remedy
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.
90V167000 · Power Train:automatic Transmission
Sep 20, 1990
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 & remedy
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.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
5DP92015 · Engine Compartment Fires
Opened Jul 30, 1992 · Closed Nov 25, 1992
Status: closed (inferred from source dates) · Engine And Engine Cooling
ENGINE COMPARTMENT FIRES
EA92018 · Heater Core Failure
Opened Jun 2, 1992 · Closed Apr 2, 1993
Status: closed (inferred from source dates) · Visibility:defroster/defogger/hvac System
There is no summary currently available
DP92005 · Defective Heater Cores
Opened Mar 3, 1992 · Closed Jun 2, 1992
Status: closed (inferred from source dates) · Visibility:defroster/defogger/hvac System
DEFECTIVE HEATER CORES
EA91033 · Rear Door Hinge Separation
Opened Jul 15, 1991 · Closed Jul 28, 1992
Status: closed (inferred from source dates) · Structure
There is no summary currently available
PE91046 · Rear Door Hinge Separation
Opened Feb 19, 1991 · Closed Jul 15, 1991
Status: closed (inferred from source dates) · Structure
There is no summary currently available
Illustration