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 1999 Ford F-550, both ongoing and closed, are listed below:

  1. INVESTIGATION: SPARK PLUG EJECTION FROM CYLINDER HEAD

    NHTSA #DP05005

    Status:
    CLOSED

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  2. INVESTIGATION: PULLS UNDER HARD BRAKING

    NHTSA #SQ00002

    Status:
    CLOSED

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  4. INVESTIGATION: TIRE VALVE STEM

    NHTSA #RQ02002

    Status:
    RECALLED

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