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 Explorer, both ongoing and closed, are listed below:

  1. INVESTIGATION: ENGINE COOLING FAN CRACKS

    NHTSA #PE94044

    Status:
    CLOSED

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  2. INVESTIGATION: PARKING PAWL

    NHTSA #RQ97015

    Status:
    RECALLED

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  3. INVESTIGATION: PARK PAWL BENDING

    NHTSA #PE91127

    Status:
    RECALLED

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  4. INVESTIGATION: FRONT SEAT TRACK FAILURE

    NHTSA #PE92084

    Status:
    CLOSED

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  5. INVESTIGATION: SEPARATION OF MASTER CYLINDER

    NHTSA #EA95018

    Status:
    RECALLED

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  6. INVESTIGATION: BRAKE MASTER CYLINDER/BOOSTER SEPARATION

    NHTSA #PE95001

    Status:
    CLOSED

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  7. INVESTIGATION: VACUUM BOOSTR VALVE FAILS

    NHTSA #EA91040

    Status:
    CLOSED

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  8. INVESTIGATION: VACUUM BOOSTR VALVE FAILS

    NHTSA #PE91084

    Status:
    CLOSED

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  9. INVESTIGATION: SPARE TIRE WINCH CABLE

    NHTSA #EA00012

    Status:
    CLOSED

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  10. INVESTIGATION: SPARE TIRE WINCH CABLE

    NHTSA #PE99072

    Status:
    CLOSED

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  11. INVESTIGATION: LIFTGATE SUPPORT BRACKET FAILURE

    NHTSA #RQ99016

    Status:
    PENDING

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  12. INVESTIGATION: HEAVY LATERAL VIBRATION

    NHTSA #DP98001

    Status:
    CLOSED

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  13. INVESTIGATION: SUNROOF SHATTERING AND SEPARATION

    NHTSA #EA97011

    Status:
    RECALLED

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  14. INVESTIGATION: WHL SEPARATION/TORQUE LOSS

    NHTSA #PE92029

    Status:
    CLOSED

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  15. INVESTIGATION: THROTTLE STICKING

    NHTSA #EA93003

    Status:
    CLOSED

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  16. INVESTIGATION: THROTTLE RELEASE FAILURE

    NHTSA #EA91034

    Status:
    CLOSED

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  17. INVESTIGATION: THROTTLE RELEASE FAILURE

    NHTSA #PE91058

    Status:
    CLOSED

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