NHTSA Office of Defects Investigation
Engineering Analysis EA06-002: REAR COIL SPRING FRACTURE
- Closed
NHTSA's Office of Defects Investigation opened Engineering Analysis EA06-002 on January 24, 2006, the day it closed Preliminary Evaluation PE05-054, whose summary cites it, and closed it on February 5, 2007. NHTSA's investigations file lists the Ford Taurus and Mercury Sable for it.
Updated daily from NHTSA's investigations file
Key facts
- NHTSA number
- EA06-002 (also written EA06002)
- 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 February 5, 2007
- Opened
- Closed
- Vehicle or equipment manufacturer
- Ford Motor Company
- Components
- Suspension — Rear; Suspension — Rear — Springs; Suspension — Rear — Springs — Coil Springs
- Vehicles and equipment
- Ford Taurus and Mercury Sable
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 EA06-002.
try.vin does not copy NHTSA's investigation documents; NHTSA's investigation record lists the ones NHTSA has published.
ODI'S ANALYSIS IDENTIFIED A HIGH COMPLAINT RATE FOR THE REAR COIL SPRINGS IN THE SALT BELT STATES (APPROXIMATELY 250 PER 100,000 VEHICLES).
APPROXIMATELY 59 PERCENT OF THE COMPLAINTS ALLEGED THAT THE COIL SPRING FAILURE CAUSED DAMAGE TO THE ADJACENT REAR TIRE, WITH ABOUT HALF OF THESE (30 PERCENT OF TOTAL COMPLAINTS) ALLEGING THAT THE DAMAGE RESULTED IN AIR LOSS.BECAUSE AIR LOSS FROM A REAR TIRE CAN RESULT IN CHANGES IN VEHICLE HANDLING CHARACTERISTICS, ODI EXAMINED FIELD DATA, TEST DATA AND INTERVIEWED CONSUMERS TO ASSESS THE SAFETY CONSEQUENCES OF SUCH FAILURES IN THE SUBJECT VEHICLE POPULATION.ANALYSIS OF ALL AVAILABLE FIELD DATA DID NOT IDENTIFY ANY CRASHES OR INJURIES RESULTING FROM THE ALLEGED DEFECT IN THE SUBJECT VEHICLES.VRTC TESTING CONDUCTED TO SIMULATE A COIL SPRING INDUCED REAR TIRE FAILURE DID NOT RESULT IN A LOSS OF VEHICLE CONTROL.WHEN INTERVIEWED BY ODI, NONE OF THE CONSUMERS WHO EXPERIENCED INCIDENTS OF TIRE AIR LOSS DUE TO THE ALLEGED DEFECT INDICATED THAT THE FAILURES CAUSED A LOSS OF VEHICLE CONTROL.TIRE DAMAGE RESULTING FROM THE ALLEGED DEFECT HAS INVOLVED RUBBING/ABRASIVE WEAR OF THE INNER TIRE SIDEWALL WITH THE POTENTIAL FOR AIR LOSS FROM PIN-HOLE SIZED LEAKS IN THE WEAR GROOVE.THERE IS NO EVIDENCE THAT THE ALLEGED DEFECT HAS CAUSED ANY SUDDEN, CATASTROPHIC TIRE FAILURES IN EITHER STRAIGHT OR TURNING MANEUVERS.A SAFETY-RELATED DEFECT HAS NOT BEEN IDENTIFIED AT THIS TIME AND FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT A SAFETY-RELATED DEFECT DOES NOT EXIST.THE AGENCY WILL MONITOR THIS ISSUE AND RESERVES THE RIGHT TO TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.SEE DOCUMENT FILE FOR ADDITIONAL INFORMATION REGARDING THIS RESUME.
Vehicles and equipment listed for this investigation
NHTSA's investigations file lists these vehicles and equipment for Engineering Analysis EA06-002. 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.
Ford
All Ford recallsMercury
All Mercury recallsWhat 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.
Free VIN check: decode a VIN to see its year, make and model.
Sources
NHTSA's investigation record for EA06-002
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.