Home / Isuzu Trooper / 1990 ← New search 1990 Isuzu Trooper Owner reports · Recalls · Investigations
Illustration Same car. Similar to other model years Owner complaints for the 1990 Isuzu Trooper do not stand out strongly from the model-year median of 25.
About this comparison → Overview Common problems Recalls Investigations What to inspect Owner reports
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 23 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.
Issues worth paying extra attention to based on owner reports.
Engine And Engine Cooling. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports → Power Train. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports → Electrical System. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports → NHTSA owner reports · September 18, 2026 snapshot.
2 crash reports5 fire reports3 injury reports
Vehicle Speed Control complaints 1 reports Clear category filter Mileage unknown · May 11, 2003
Electrical System Vehicle Speed Control
MY 1990 ISUZU TROOPER IS EXHIBITING DANGEROUS REVVING AND DROPPING OF THE IDLE. THE TRUCK ACCELERATES WITHOUT WARNING AND IS IMPOSSIBLE NOW TO DRIVE SAFELY. IT IS MY UNDERSTANDING THAT THE ECU IN THESE TRUCKS IS FAULTY DUE TO MANUFACTURING DEFECTS. I FURTHER UNDERSTAND THAT THOUSANDS OF OTHERS HAVE THESE PROBLEMS. PLEASE INITI…
Read full complaint MY 1990 ISUZU TROOPER IS EXHIBITING DANGEROUS REVVING AND DROPPING OF THE IDLE. THE TRUCK ACCELERATES WITHOUT WARNING AND IS IMPOSSIBLE NOW TO DRIVE SAFELY. IT IS MY UNDERSTANDING THAT THE ECU IN THESE TRUCKS IS FAULTY DUE TO MANUFACTURING DEFECTS. I FURTHER UNDERSTAND THAT THOUSANDS OF OTHERS HAVE THESE PROBLEMS. PLEASE INITIATE A RECALL OF THESE VEHICLES AND FORCE ISUZU TO REPAIR THESE DANGEROUS DEFECTS AT THEIR EXPENSE, NOT THE CONSUMERS'. PLEASE TAKE ACTION ON THIS EXTREMELY DANGEROUS SITUATION. I WOULD APPRECIATE YOUR INSTRUCTING ISUZU TO CONTACT ME WITH INFORMATION ON WHERE I CAN HAVE MY TRUCK TOWED TO BE REPAIRED. IT IS NOT SAFE TO DRIVE IT. SEVERAL GARAGES SAID THEY CANNOT DIAGNOSE AND FIX THE PROBLEM, AND THAT ISUZU MUST RESOLVE THE PROBLEM. MANY THANKS FOR YOUR CONSIDERATION. *NLM
NHTSA ODI #10018510
Official recalls 2 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.
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 6 DP92015 · 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
PE90087 · Diesel Engine Surge Opened Jun 6, 1990 · Closed Oct 12, 1990
Status: closed (inferred from source dates) · Engine And Engine Cooling
There is no summary currently available
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