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NHTSA safety investigation

NHTSA Investigation PE02085

Preliminary Evaluation · Ford Motor Company · WHEELS

ClosedPreliminary Evaluation

An investigation is not a finding that a defect exists.

NHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.

Model years namedModel years in our database that NHTSA associated with this inquiry. Being named in an investigation says nothing about whether an individual vehicle has any problem.
3
1 model
Opened
Nov 18, 2002
Preliminary Evaluation
Closed
Apr 10, 2003
No associated recall recorded

What NHTSA is examining

The agency's own description of the inquiry, quoted as published

WHEEL STUD FRACTURE

ANALYSIS OF ODI AND FORD DATA HAS IDENTIFIED 1619 INCIDENTS OF WHEEL STUD FRACTURE IN MY 1998 THROUGH 2000 FORD WINDSTAR VEHICLES, INCLUDING 69 WHEEL SEPARATIONS AND 11 CRASHES.FORD HAS NOT BEEN ABLE TO IDENTIFY ANY DESIGN OR MANUFACTURING DEFECTS IN ITS ANALYZIS OF THE PROBLEM.FORD MAINTAINS THAT THE FAILURES ARE CAUSED BY EITHER:(1) INADVERTENT OVERTORQUING OF LUG NUTS DURING REMOVAL OR INSTALLATION; OR (2) FATIGUE DUE TO INSUFFICIENT CLAMP LOAD BETWEEN THE WHEEL AND THE BRAKE ROTOR OR DRUM AND HUB ASSEMBLY.ACCORDING TO FORD, CORROSION, DIRT, OR DAMAGE PRESENT ON THE ROAD WHEEL AT THE NUT INTEFACE COULD CONTRIBUTE TO THE LATTER CONDITION. ANALYSIS OF ODI COMPLAINT DATA INDICATES THAT THE SUBJECT VEHICLES EXPERIENCE WHEEL STUD FAILURES AT SIGNIFICANTLY HIGHER RATES THAN PEER MINIVANS.THIS INVESTIGATION HAS BEEN UPGRADED TO FURTHER ASSESS THE FREQUENCY, SCOPE, AND TREND OF THE ALLEGED DEFECT CONDITION IN MY 1997 THROUGH 2000 WINDSTAR MINIVANS.

An investigation is a separate record from a recall and from a manufacturer communication. A manufacturer campaign to repair a safety defect or a failure to meet a federal safety standard.

Investigation details

Identifiers, dates and outcome as recorded by NHTSA

Action number
PE02085
Investigation type
Preliminary Evaluation (PE)
Status
Closed
Manufacturer
Ford Motor Company
Component
WHEELS
Opened
Nov 18, 2002
Closed
Apr 10, 2003
Associated recall campaign
None recorded

Vehicles named in this investigation

3 model years across 1 model

Being named here means NHTSA included the vehicle in the scope of its inquiry. It is not a statement that these vehicles have a defect.