NHTSA Office of Defects Investigation
Engineering Analysis EA08-007: VIOLENT FRONT END OSCILLATION
- Closed
NHTSA's Office of Defects Investigation opened Engineering Analysis EA08-007 on March 14, 2008 and closed it on March 31, 2009. NHTSA's investigations file lists 4 Ford models for it.
Updated daily from NHTSA's investigations file
Key facts
- NHTSA number
- EA08-007 (also written EA08007)
- Investigation type
- Engineering Analysis A more detailed stage of a defect investigation, opened when NHTSA's Office of Defects Investigation decides an issue merits further review, often after a Preliminary Evaluation or a Recall Query; it can include vehicle testing, surveys and further information requests.
- Status
- Closed March 31, 2009
- Opened
- Closed
- Vehicle or equipment manufacturer
- Ford Motor Company
- Components
- Suspension; Suspension — Front
- Vehicles and equipment
- 4 Ford models, including the F-250 and F-250 SD
A recall appears here only when NHTSA's investigations file links one to the investigation; NHTSA's summary or record can name others.
NHTSA's summary
As NHTSA's Office of Defects Investigation wrote it for Engineering Analysis EA08-007.
try.vin does not copy NHTSA's investigation documents; NHTSA's investigation record lists the ones NHTSA has published.
THIS INVESTIGATION WAS OPENED BASED ON 78 CONSUMER COMPLAINTS OF SEVERE SUSPENSION AND STEERING WHEEL OSCILLATIONS AFTER THE SUBJECT VEHICLES TRAVELED OVER AN UNEVEN SURFACE.ODI WAS CONCERNED ABOUT THESE COMPLAINTS BECAUSE MANY OF THEM ALLEGED LOSS OF CONTROL AND THE LOSS OF CONTROL OCCURREDAT SPEEDS ABOVE 50 MILES PER HOUR.AT THE TIME THESE COMPLAINTS WERE RECEIVED, ODI WAS ALSO AWARE OF THE TSB 07-10-10 AND EARLY WARNING FIELD REPORTS THAT DISCUSSED THE SHIMMY CONDITION ON THE SUBJECT VEHICLES.SINCE OPENING THIS INVESTIGATION, ODI HAS CONFIRMED, BASED ON CONSUMER COMPLAINTS, WARRANTY DATA, TESTING CONDUCTED BY VRTC, AND ODI INSPECTION OF COMPLAINT VEHICLES, THAT THE OWNERS OF THE SUBJECT VEHICLES ARE EXPERIENCING SHIMMY EVENTS ON THEIR VEHICLES.HOWEVER, ODI HAS ALSO CONFIRMED THAT OWNERS TYPICALLY DO NOT MAINTAIN THEIR TIRES AT THE PRESSURES RECOMMENDED BY FORD ON THE TIRE LABEL.FURTHER, ODI HAS FOUND THAT IN ORDER FOR SHIMMY TO OCCUR, TIRE PRESSURES MUST BE SUBSTANTIALLY BELOW (AT LEAST 20%) THOSE SPECIFIED ON THE VEHICLE TIRE LABEL.ODI CONSIDERS THESE UNSAFE TIRE CONDITIONS TO BE THE RESULT OF ONE OF THREE TYPICAL SITUATIONS.THE TIRES ARE BEING IMPROPERLY MAINTAINED, THE OWNERS ARE INTENTIONALLY SETTING THE TIRE PRESSURES LOW TO ENHANCE RIDE QUALITY, OR AFTERMARKET TIRES (NOT DESIGNED FOR USE ON THE VEHICLE) ARE INSTALLED TO CHANGE THE APPEARANCE OR FUNCTION OF THE VEHICLE.THE SUBJECT VEHICLES ARE INTENDED AND DESIGNED TO BE USED AS HEAVY DUTY VEHICLES AND AS SUCH REQUIRE THAT THE TIRES BE CAPABLE OF HANDLING THE LOADS FOR WHICH THE VEHICLE IS DESIGNED AND MARKETED.IN ORDER FOR THE TIRES TO BE CAPABLE OF HANDLING THESE LOADS, THE PROPER TIRE PRESSURE MUST BE MAINTAINED.IN LIGHT OF THE INFORMATION GATHERED IN THIS INVESTIGATION AND FORD'S AGREEMENT TO NOTIFY SUBJECT VEHICLE OWNERS (NOW AND EVERY TWO YEARS UNTIL THE VEHICLES REACH TEN YEARS FROM THEIR PRODUCTION DATE) ABOUT THE IMPORTANCE OF MAINTAINING PROPER TIRE PRESSURES ON THEIR VEHICLES, FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT NO SAFETY-RELATED DEFECT EXISTS.THE AGENCY RESERVES THE RIGHT TO TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.FOR ADDITIONAL INFORMATION, SEE THE ATTACHED CLOSING REPORT.
Vehicles and equipment listed for this investigation
NHTSA's investigations file lists these vehicles and equipment for Engineering Analysis EA08-007. A listed model year means only that an investigation names it; it says nothing about any particular vehicle. Model years with a try.vin recall page link to that page's NHTSA investigations section.
What an NHTSA investigation is
NHTSA's Office of Defects Investigation (ODI) looks into possible safety defects in vehicles and equipment, often after owner complaints. An investigation usually starts as a Preliminary Evaluation, or as a Recall Query when it concerns whether an existing recall covers the right vehicles or fixes the problem, and ODI can upgrade it to a more detailed Engineering Analysis. A Defect Petition asks NHTSA to open an investigation, and Audit and Equipment Queries are administrative investigations into whether companies complied with federal vehicle safety requirements, such as reporting, recall and certification rules.
An open investigation is not a finding that a safety defect exists, and NHTSA can close one without a recall.
To see whether a specific vehicle has an open recall, enter its VIN at nhtsa.gov/recalls.
Ford VIN check: decode a VIN to see its year, make and model.
Sources
NHTSA's investigation record for EA08-007
Investigation details come from NHTSA's investigations file, which try.vin imports once a day. The investigation types are described from the U.S. Department of Transportation Inspector General's May 2023 report on NHTSA's Office of Defects Investigation, NHTSA's petition rules (49 CFR Parts 552 and 557) and NHTSA's Office of Defects Investigation procedures. How try.vin reads NHTSA investigations.