1999 Isuzu Trooper engine and engine cooling problems
56 owner complaints filed with NHTSA name the engine and engine cooling on the 1999 Isuzu Trooper — 69% of all complaints for this model year.
What owners report
“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…”
filed Feb 23, 2010
“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…”
filed Apr 10, 2008
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Throttle body mounting bolt torque specifications. *tt
0301S002 · Service Bulletin/Repair Instructions · issued May 1, 2003
Engine and Engine Cooling problems in other Trooper years
| Year | Reports | Share |
|---|---|---|
| 2001 Trooper | 8 | 28% |
| 2000 Trooper | 23 | 47% |
| 1998 Trooper | 19 | 45% |
| 1996 Trooper | 8 | 16% |
| 1995 Trooper | 7 | 13% |
| 1994 Trooper | 12 | 26% |
| 1993 Trooper | 7 | 21% |
| 1992 Trooper | 8 | 32% |
| 1991 Trooper | 13 | 23% |
| 1990 Trooper | 6 | 26% |
Other reported problem areas on the 1999 Isuzu Trooper
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.