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 1991 Ford F-150, both ongoing and closed, are listed below:

1. INVESTIGATION: IDLE AIR SPD CTRL VLV MALF

   NHTSA #EA93022

   Status:

   CLOSED

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2. INVESTIGATION: IDLE AIR SPD CTRL VLV MALF

   NHTSA #PE93010

   Status:

   CLOSED

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4. INVESTIGATION: FORD F-SERIES DUAL FUEL TANK LEAKAGE

   NHTSA #RQ98008

   Status:

   RECALLED

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5. INVESTIGATION: TRANSMISSION FLUID FIRES

   NHTSA #PE91064

   Status:

   CLOSED

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6. INVESTIGATION: FRONT SEAT BACK FAILURE

   NHTSA #EA92029

   Status:

   CLOSED

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7. INVESTIGATION: FNT RECLNING SEAT BCK FAIL

   NHTSA #PE92042

   Status:

   CLOSED

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8. INVESTIGATION: DEFECTIVE WIRING

   NHTSA #DP94002

   Status:

   CLOSED

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9. INVESTIGATION: LOSS OF BRAKE EFFECTIVENES

   NHTSA #EA91044

   Status:

   RECALLED

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10. INVESTIGATION: LOSS OF BRAKE EFFECTIVENES

    NHTSA #PE91077

    Status:

    CLOSED

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11. INVESTIGATION: DUAL FUEL TANK CROSSFLOW/LEAKAGE

    NHTSA #EA99032

    Status:

    RECALLED

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12. INVESTIGATION: FUEL EXPULSION

    NHTSA #EA93001

    Status:

    RECALLED

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13. INVESTIGATION: FUEL EXPULSION

    NHTSA #PE92077

    Status:

    CLOSED

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14. INVESTIGATION: FUEL EXPULSION

    NHTSA #EA91031

    Status:

    RECALLED

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