Investigations
POWER STEERING PUMP FAILURES
NHTSA Preliminary Evaluation PE08009 - closed, opened 2008-02-01 and involving the FREIGHTLINER FREIGHTLINER.
NHTSA investigation PE08009 is a Preliminary Evaluation opened on 2008-02-01 and currently closed. The subject of record is FREIGHTLINER FREIGHTLINER, which places this file inside the Office of Defects Investigation queue for FREIGHTLINER. Latest activity on this investigation was logged on 2008-07-03 - NHTSA updates that field whenever an Information Request goes out, a supplement is filed, or a status change is recorded in the public docket.
A Preliminary Evaluation like PE08009 is the entry point of the federal defect-investigation process. NHTSA engineers scan complaint databases, field reports, and manufacturer data to decide whether an Engineering Analysis is warranted, whether a voluntary recall is already sufficient, or whether the pattern does not rise to a defect finding.
Investigators summarized the matter as follows: "ODI'S INVESTIGATION OF THE SUBJECT POWER STEERING PUMP HAS FOUND THAT, WITH OVER FIVE YEARS OF OPERATIONAL EXPOSURE, THERE HAVE BEEN NO PUMP FAILURES THAT RESULTED IN LOSS OF POWER STEERING ASSIST WHILE THE VEHICLE WAS B..." Investigations are the early-warning layer of the federal auto-safety system, sitting upstream of formal recalls and defect orders. Whether this one closes without action or escalates into an Engineering Analysis, the full history stays in the ODI archive so researchers, litigators, and buyers can pull the paper trail at any time. Related FREIGHTLINER files, listed below, give context on whether this is an isolated concern or part of a broader pattern across the brand.
Investigation Summary
ODI'S INVESTIGATION OF THE SUBJECT POWER STEERING PUMP HAS FOUND THAT, WITH OVER FIVE YEARS OF OPERATIONAL EXPOSURE, THERE HAVE BEEN NO PUMP FAILURES THAT RESULTED IN LOSS OF POWER STEERING ASSIST WHILE THE VEHICLE WAS BEING DRIVEN ON THE ROAD OR ANY SUDDEN DROP OFF IN THE POWER STEERING ASSIST AT ANY TIME. THERE ARE NO CRASHES OR INJURIES. THESE "REDUCTION IN ASSIST EVENTS" HAVE ONLY OCCURRED DURING BACKING OR PARKING MANEUVERS. FREIGHTLINER AND TRW APPEAR TO HAVE ACTED RESPONSIBLY IN PROVIDING INFORMATION TO CUSTOMERS AND DEALERS REGARDING SAFE MAINTENANCE AND REPAIR PROCEDURES FOR POWER STEERING PUMPS THAT HAVE EXPERIENCED A REDUCTION IN "SPEED OF STEER." FREIGHTLINER'S FIELD SERVICE BULLETIN, FSB 46-38, IS A DIAGNOSTIC PROCEDURE FOR DETERMINING IF THE TRW POWER STEERING PUMP IS RESPONSIBLE FOR REDUCED POWER ASSIST AND DESCRIBES CORRECTIVE ACTIONS THAT SHOULD BE TAKEN ONCE THE DETERMINATION IS MADE. THE CORRECTIVE ACTIONS ARE: REPLACE THE SPOOL VALVE ASSEMBLY (VEHICLES BUILT PRIOR TO 1/1/05) OR, REPLACE THE POWER STEERING PUMP (VEHICLES BUILT AFTER 1/1/05). A SAFETY-RELATED DEFECT TREND HAS NOT BEEN IDENTIFIED AT THIS TIME AND 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 MORE DETAILED INFORMATION SEE DOCUMENT FILE.
About This Investigation Type
A Preliminary Evaluation (PE) is the first phase of NHTSA's investigation process. It is opened when the agency identifies a potential safety defect pattern, usually triggered by consumer complaints, manufacturer reports, or field monitoring. During a PE, NHTSA gathers information to determine whether a formal engineering analysis is warranted.
Other FREIGHTLINER Investigations
EVDM connector plate separation
Halogen Headlights May Cause Fires
Trolley bus circuit breaker fires
Rear Wheel Speed Sensor Failure
Intermittent Loss of Power Steering Assist
Data from NHTSA Office of Defects Investigation. Cross-references: NHTSA recall campaign API and NHTSA FARS where fatality records overlap. PlainCars does not rate or recommend vehicles. about how PlainCars sources NHTSA data.
Read our methodology - how this data is sourced, computed, and verified.