1999 Isuzu Trooper Engine cooling Problems

“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 defect known by mechanics and owners, but Isuzu unwilling to acknowledge problem. Though monitoring constantly, I am just waiting for significant engine failure.”

“From the time I bought the vehicle when it was only a couple years old, every time I brought the vehicle in for an oil change, they said it was almost empty of oil. I brought it in to a dealer several times since it was under warranty. They could never find the reason for it burning oil. Every dealer said it was a common issue with the Isuzu, but they could not fix it because they could not find the problem.”

“My 1999 Trooper threw a rod in the engine. It is not drivable. I have had the Trooper in the shop 3 times before with other problems, before the warranty was up. The dealer did not want to discuss the problem. In trying to find another engine I was told that this was a common problem and that it was very hard to find an engine. No new ones were made, nor was a repair kit.”

“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 should fix the problem. A few months later, driving back from a trip, the engine began knocking and the oil light came on again. Moments later I lost power (rpms) and pulled the car over. …”

“1999 Isuzu Trooper.. Oil consumption leading to severe motor damage. ( over a quart per 1,000 miles) have heard of several of the same incidents with others driving Isuzu products having the same outcome as I. A complete motor overhaul with 64,000 miles on this Trooper. Other instances with fewer miles. Isuzu is aware of the problem, only manufactured this particular model for two years. Isuzu was notified and then in return let my mechanic knew where to begin repairs and to what extent they would be. …”