1999 Isuzu TROOPER problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
80 owner complaints analyzed
0 distinct recall campaigns
71,500 mi median reported failure mileage
Scope: 1999 model year. Data snapshot: . 45 complaints include usable failure mileage.
Most common problems
Engine And Engine Cooling:Engine is the most frequently named component, appearing in 29 of 80 complaints (36.3%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Transmission and shifting | 10 | 12.5% |
| Braking behavior | 10 | 12.5% |
| Engine operation | 9 | 11.3% |
| Electrical and battery issues | 2 | 2.5% |
| Steering behavior | 2 | 2.5% |
| Fuel system concerns | 1 | 1.3% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Engine And Engine Cooling:Engine | 29 |
| Engine And Engine Cooling:Engine:Gasoline | 17 |
| Engine And Engine Cooling | 10 |
| Vehicle Speed Control | 7 |
| Power Train:Automatic Transmission | 6 |
| Electrical System | 3 |
| Electrical System:Alternator/Generator/Regulator | 2 |
| Engine | 2 |
Engine And Engine Cooling:Engine: 29; Engine And Engine Cooling:Engine:Gasoline: 17; Engine And Engine Cooling: 10; Vehicle Speed Control: 7; Power Train:Automatic Transmission: 6; Electrical System: 3; Electrical System:Alternator/Generator/Regulator: 2; Engine: 2
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 2 |
| 25,000 to 49,999 | 6 |
| 50,000 to 74,999 | 22 |
| 75,000 to 99,999 | 8 |
| 100,000 to 149,999 | 3 |
| 150,000 and above | 4 |
Under 25,000: 2; 25,000 to 49,999: 6; 50,000 to 74,999: 22; 75,000 to 99,999: 8; 100,000 to 149,999: 3; 150,000 and above: 4
50,000 to 74,999 miles has the most reports with usable mileage (22). 35 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2000 | 4 |
| 2001 | 10 |
| 2002 | 5 |
| 2003 | 8 |
| 2004 | 17 |
| 2005 | 17 |
| 2006 | 8 |
| 2007 | 1 |
| 2008 | 2 |
| 2009 | 1 |
| 2010 | 1 |
| 2012 | 1 |
| 2016 | 4 |
| 2019 | 1 |
2000: 4; 2001: 10; 2002: 5; 2003: 8; 2004: 17; 2005: 17; 2006: 8; 2007: 1; 2008: 2; 2009: 1; 2010: 1; 2012: 1; 2016: 4; 2019: 1
Pattern summary
Engine And Engine Cooling:Engine leads the component reports. Transmission and shifting appears in 10 complaint narratives. Braking behavior appears in 10 complaint narratives. Engine operation appears in 9 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 10005537 · 2003-02-09 (February 9, 2003)
I HAVE A 1999 ISUZU TROOPER THAT I PURCHASED ON 7/27/02 WITH 67,000 MILES ON THE ODOMETER. IT NOW HAS 72,800 MILES. IT IS A V6 WITH AUTOMATIC TRANSMISSION, AND IS IN EXCELLENT SHAPE. DURING MY OWNERSHIP, AT FOUR SEPARATE OCCASIONS, AS I WAS COMING TO A STOP AT ABOUT THE 5 MPH MARK, THE THROTTLE HAS OPENED FULLY WHILE IN GEAR! I HAVE HAD TO "PANIC BRAKE" THE VEHICLE AND PUSH THE TRANSMISSION SELECTOR TO "NEUTRAL". WHEN I HAVE DONE THIS, THE ENGINE HAS RACED TO 6000 RPM+ AND HELD, SO I HAVE HAD TO TURN-OFF THE IGNITION SWITCH EACH TIME. AFTER GAT…
Owner-reported narrative. 72,800 miles reported. Look up ODI 10005537 at NHTSA ↗
Owner report 10013842 · 2003-04-02 (April 2, 2003)
I PURCHASED MY TROOPER NEW. I HAVE ALL OF THE PRINT OUTS OF THE OIL CHANGES MADE WHICH ARE AT OR BELOW RECOMMENDED INTERVALS. AT APPROXIMATELY. 25000 MILES I REPORTED A SHIFTING PROBLEM AND THEY REPLACED THE TRANSFER CASE BECAUSE METAL FILINGS WERE FOUND IN IT. THEN 2000 MILES LATER THE PROBLEM RE-OCCURRED AND THEY REPLACED THE ENTIRE TRANSMISSION. IT WAS BOUGHT IN BACK 500 MILES LATER FOR AND ADJUSTMENT ON THIS AGAIN. AT 40000 MILES THE CD PLAYER JAMMED AND THEY REPLACED THIS WITH A NEW ONE THAT TOOK 8 WEEKS TO RECEIVE. WE HAD FOLLOWED THE …
Owner-reported narrative. 74,180 miles reported. Look up ODI 10013842 at NHTSA ↗
Owner report 10113417 · 2005-03-02 (March 2, 2005)
ISUZU TROOPER 1999 PROBLEM AFTER PROBLEM, ENGINE BURNING OIL. *BF AFTER THE ENGINE WAS REPLACED, THE ENGINE LIGHT ILLUMINATED AT LEAST 30 TIMES. THE DEALER GAVE THE CONSUMER ALL TYPES OF EXCUSES UNTIL FINALLY THEY SAID THEY DIDN'T KNOW WHAT WAS CAUSING THE LIGHT TO ILLUMINATE. THERE WERE OTHER PROBLEMS SUCH AS A HARD SHIFT WITH THE TRANSMISSION, WATER LEAKING THROUGH THE SUN ROOF, DIFFICULTY STARTING THE VEHICLE, UNEVEN TIRE WEAR, IN JUST 65,000 THE CONSUMER HAS GONE THROUGH 3 COMPLETE SETS OF TIRES. THE CONSUMER WAS TOLD THERE WAS A PR…
Owner-reported narrative. 40,000 miles reported. Look up ODI 10113417 at NHTSA ↗
Owner report 10071748 · 2004-04-28 (April 28, 2004)
WHILE DRIVING AT 65 MPH VEHICLE STALLED. WHEN THIS OCCURRED VEHICLE LOST POWER AND COASTED TO A STOP. VEHICLE WAS TOWED TO A DEALERSHIP, WHO INDICATED THAT THIS OCCURRED BECAUSE THERE WAS NO OIL IN THE ENGINE. THE ENGINE WAS REPLACED, BUT THE PROBLEM RECURRED. *AK
Owner-reported narrative. 68,000 miles reported. Look up ODI 10071748 at NHTSA ↗
Owner report 10078967 · 2004-06-28 (June 28, 2004)
BOUGHT USED 1999 ISUZU TROOPER WITH 48,000 MILES. TOOK IT TO MECHANIC BECAUSE IT HAD A PROBLEM STARTING. DISCOVERED ENGINE LEAKED MORE THAN 1 QUART OF OIL PER 1000 MILES. ISUZU REPLACED ENGINE JUST BEFORE 60,000 MILES, BUT STILL HAS PROBLEM STARTING. MECHANIC DETERMINED 3 OR 6 FUEL INJECTORS ARE BAD, AND NEEDED TO BE REPLACED. TROOPER STALLS AT SLOW SPEEDS, AND ENGINE WILL REV WHILE IDLING.*AK
Owner-reported narrative. 50,000 miles reported. Look up ODI 10078967 at NHTSA ↗
Owner report 742275 · 2001-03-11 (March 11, 2001)
THE VEHICLE HAS STALLED WHILE IN MOTION ON SEVERAL OCCASIONS. THERE HAS BEEN NO WARNING PRIOR TO ANY OF THESE FAILURES. IN EACH CASE, THE VEHICLE WAS ABLE TO BE RESTARTED IMMEDIATELY AFTER THE FAILURE. THIS HAS BEEN OCCURING INTERMITTENTLY FOR ABOUT 6 MONTHS AND THE SERVICING DEALER (HALL ISUZU IN NEWPORT NEWS, VA) HAS BEEN UNABLE TO DETERMINE A CAUSE. ALTHOUGH THE SERVICING DEALER DOESN'T APPEAR CONCERNED, I FEEL VERY STRONGLY THAT THIS VEHICLE IS UNSAFE AND THAT EVENTUALLY THIS DEFECT WILL CAUSE THE VEHICLE TO BE INVOLVED IN AN ACCIDENT. …
Owner-reported narrative. Look up ODI 742275 at NHTSA ↗
Owner report 10193684 · 2007-06-19 (June 19, 2007)
ENGINE DIES WHILE DRIVING AT VARIOUS SPEEDS. FROM 5 MPH TO 60 MPH. DIES WHILE TURNING, THEN STEERING WHEEL LOCKS UP. ALMOST BEEN IN A FEW ACCIDENTS. HAS HAPPENED SEVERAL TIMES THIS SUMMER. SEEMS TO BE A COMMON PROBLEM. *AK ENGINE ALSO BURNS 1QT OIL EVER 1,000 MILES.
Owner-reported narrative. Look up ODI 10193684 at NHTSA ↗
Owner report 764849 · 2002-07-28 (July 28, 2002)
I DROVE TOO CLOSE TO THE EDGE OF THE PAVEMENT AND THE TWO RIGHT WHEELS DROPPED OFF THE PAVEMENT AND WHEN I TRIED TO PULL THE CAR BACK ONTO THE PAVEMENT, THE RIGHT FRONT WHEEL STRUCK THE PAVEMENT IN SUCH A WAY CAUSING THE TIE-ROD TO BREAK WHICH LEFT THE RIGHT FRONT WHEEL IN A FULL LEFT TURN POSITION, I LOST CONTROL OF THE STEERING WHEEL AND THE VEHICLE CONTINUED DOWN THE ROAD IN A LEFT TURN ARC CAUSING THE VEHICLE TO SLIDE BROADSIDE INTO A DITCH WHICH CAUSED THE VEHICLE TO ROLL THREE TIMES--STOPPING IN THE UPRIGHT POSITION, TOTALLING THE VEHICLE…
Owner-reported narrative. Look up ODI 764849 at NHTSA ↗
Owner report 10141262 · 2005-10-31 (October 31, 2005)
DT: THE CONTACT STATED GAS WAS SPILLING OUT OF THE TOP OF GAS TANK. THE TANK WAS FULL OR HALF FULL, BUT WHEN STOPPING OR SLOWING DOWN THE FUEL SPILLED OUT OF THE TOP OF THE TANK. THIS HAS BEEN HAPPENING FOR TWO AND A HALF WEEKS. THE DEALERSHIP WAS CONTACTED, AND THEY SAID THAT THERE WERE NO RECALLS ON THE VEHICLE, BUT IF HE WANTED TO MAKE AN APPOINTMENT THE DEALER WOULD FIX IT FOR HIM. HE HAS NOT DONE SO AT THIS TIME.*AK UPDATED 11/16/2005 - THE FUEL TANK BECAME RUSTED AT THE FUEL PUMP WHICH CAUSE FUEL TO LEAK FROM THE FUEL TANK ONTO THE EX…
Owner-reported narrative. 51,500 miles reported. Look up ODI 10141262 at NHTSA ↗