NHTSA Investigation EA97002

FUEL TANK LEAKS

THIS ENGINEERING ANALYSIS WAS OPENED ON JANUARY 31, 1997 BASED ON INFORMATION GATHERED DURING PRELIMINARY EVALUATION (PE), PE96-051. THE PE WAS OPENED ON AUGUST 19, 1996, TO INVESTIGATE ALLEGATIONS OF FUEL LEAKAGE FROM THE AREA WHERE THE FUEL PUMP/SENDING UNIT JOINS THE FUEL TANK.FOR BREVIDY, THIS AREA WILL BE REFERRED TO AS THE PUMP/TANK INTERFACE.THESE ALLEGATIONS WERE FIRST RECEIVED BY ODI ON AUGUST 2, 1996 WHILE INVESTIGATING ALLEGATIONS OF CHRYSLER MINIVAN THROTTLE SHAFT HAND-UP, AND UNCONTROLLED ENGINE SPEED, IN PE96-036.WHILE DISCUSSING THAT ISSUE WITH A FLEET, IT WAS ALLEGED THAT AT LEAST 10(OUT OF 40) 1996 EARLY PRODUCTION CHRYSLER MINIVANS LEAKED FUEL FROM THE PUMP/TANK INTERFACE.ANALYSIS OF THE COMPLAINT AND WARRANTY DATA INDICATE FUEL TANK LEAKAGE INCIDENTS IN THE SUBJECT VEHICLES PREDOMINATLY AFFECTED EARLY PRODUCTION VEHICLES.THE DATA INVOLVING CONFIRMED INCIDENTS OF TANK/PUMP INTERFACE LEAKS SUGGEST THAT THOSE FAILURES HAVE BEEN DECLINING SINCE JULY 1996.ODI HAS RECEIVED NO REPORTS OF THE SUBJECT CONDITION INVOLVING ORIGINAL EQUIPMENT PUMPS AND TANKS SINCE SEPTEMBER, 1997.CURRENTLY THIS ISSSUE DOES NOT REQRESENT A CONTINUING FIELD CONCERN.ODI WILL CONTINUE TO MONITOR THE SUBJECT VEHICLES FOR FUEL LEAKS OF ANY TYPE.A SAFETY RELATED DEFECT TREND HAS NOT BEEN IDENTIFIED AT THIS TIME AND FURTHER USE OF AGENCY RESOURED 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.

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.