The Office of Defects Investigations (ODI) is an office within the NHTSA which investigates serious safety problems in the design, construction or performance of vehicles. The NHTSA is authorized to order manufacturers to recall and repair vehicles, if the ODI finds a safety issue. NHTSA investigations for the 1987 Isuzu Trooper, both ongoing and closed, are listed below:

1. INVESTIGATION: DIESEL ENGINE SURGE

   NHTSA #PE90087

   Status:

   CLOSED

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2. INVESTIGATION: REAR DOOR HINGE SEPARATION

   NHTSA #EA91033

   Status:

   RECALLED

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4. INVESTIGATION: REAR DOOR HINGE SEPARATION

   NHTSA #PE91046

   Status:

   CLOSED

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5. INVESTIGATION: WINDSHIELD WIPER FAILS

   NHTSA #PE90059

   Status:

   CLOSED

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6. INVESTIGATION: HEATER CORE FAILURE

   NHTSA #EA92018

   Status:

   CLOSED

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7. INVESTIGATION: DEFECTIVE HEATER CORES

   NHTSA #DP92005

   Status:

   CLOSED

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