1999 Isuzu Trooper Engine and Engine Cooling Problems
Owners have filed 56 complaints with NHTSA about engine and engine cooling problems on the 1999 Isuzu Trooper, 69% of all complaints for this model year. Half of the reports with a mileage happened before 70,000 miles. The words owners use most often: “oil every” (11% of reports).
- 56engine and engine cooling complaints
- 70,000median miles at failure
- 1mention a crash
- 0mention an injury
- 0related recalls
- $11,800typical repair cost reported by owners
- 67%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Oil every: mentioned in 6 of 56 complaints (11%)
How much does it cost to fix?
Owners who wrote down what they paid or were quoted put the typical engine and engine cooling repair on the 1999 Isuzu Trooper at $11,800, and half of them between $8,500 and $13,200.
Based on 9 NHTSA complaints about this problem alone that state a repair bill or quote (2004–2006), converted to 2026 dollars with the U.S. consumer price index. These are owners' own figures, not a quote: they include dealer quotes, and owners who file complaints often faced larger repairs, so they can run higher than typical shop prices. Prices vary by shop, region and warranty coverage. How we calculate this.
At what mileage do engine and engine cooling problems happen?
Based on 35 complaints that reported the odometer reading.
How serious are the reports?
Of 56 complaints, 1 mention a crash, 1 a fire.
Isuzu Trooper engine and engine cooling complaints by model year
| Model year | Engine and Engine Cooling complaints | Share of that year | Median miles |
|---|---|---|---|
| 2002 Trooper | 4 | 33% | 41,850 |
| 2001 Trooper | 8 | 28% | 85,000 |
| 2000 Trooper | 23 | 47% | 63,550 |
| 1999 Trooper | 56 | 69% | 70,000 |
| 1998 Trooper | 19 | 45% | 59,172 |
| 1997 Trooper | 2 | 15% | 8,150 |
| 1996 Trooper | 8 | 16% | — |
| 1995 Trooper | 7 | 13% | 120,000 |
When owners reported it
Related recalls (0)
No safety recall lists engine and engine cooling for the 1999 Isuzu Trooper. A pattern of complaints does not always lead to a recall.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
99 isuzu trooper 3.5 engine burns oil excessively. I am original owner and regularly serviced per owners manual. At 50k miles, engine oil light turned on 2,500 miles after oil change and was over 4 qts low. Engine now at 60k mi and burning approx. 1 qt per 600-700 miles. Seems to be common engine…
I get frequent oil changes in my 99 isuzu trooper and had just gotten one last month. I had at least 2700 miles before my next one. I was driving down the freeway and i saw smoke coming from my hood and all my dash lights came on like a christmas tree. I pulled over and found out that my engine was…
I took my '99 isuzu trooper to get an oil change, and 3 weeks later the oil light turned on. I went to the isuzu dealership where i bought the car and after checking the oil, they noticed that there are less than a liter in the engine. They filled it and added a conditioner telling me that that…
Frequently asked questions
Do all 1999 Isuzu Troopers have engine and engine cooling problems?
No. NHTSA has 56 owner complaints about engine and engine cooling for the 1999 Isuzu Trooper (69% of the 81 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the 1999 Isuzu Trooper engine and engine cooling?
No recall currently lists engine and engine cooling for this vehicle.
At what mileage do engine and engine cooling problems start?
The median reported mileage is 70,000 miles: half of the reports with a mileage came before that.
How much does it cost to fix engine and engine cooling problems on the 1999 Isuzu Trooper?
Owners report a typical cost of $11,800 (half paid between $8,500 and $13,200), from 9 complaints that state a repair bill or quote, in 2026 dollars.
What do owners say about engine and engine cooling problems on the 1999 Isuzu Trooper?
The most frequent phrase is “oil every”, in 6 of 56 complaints.
See all 1999 Isuzu Trooper problems or engine and engine cooling problems across all Trooper years.