NHTSA Office of Defects Investigation
Engineering Analysis EA04-003: FUEL RAIL LEAKS
- Closed
NHTSA's Office of Defects Investigation opened Engineering Analysis EA04-003 on February 3, 2004 and closed it on April 23, 2004. NHTSA's investigations file lists 4 models from 2 makes for it and links recall 04V-110 to it.
Updated daily from NHTSA's investigations file
Key facts
- NHTSA number
- EA04-003 (also written EA04003)
- 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 April 23, 2004
- Opened
- Closed
- Vehicle or equipment manufacturer
- General Motors, LLC
- Components
- Fuel System, Gasoline; Fuel System, Gasoline — Delivery; Fuel System, Gasoline — Fuel Injection System — Fuel Rail
- Recall linked by NHTSA
- 04V-110: GM/FUEL RAIL TUBING, reported
- Vehicles and equipment
- 4 models from 2 makes, including the Cadillac Deville and Cadillac Eldorado
NHTSA's summary
As NHTSA's Office of Defects Investigation wrote it for Engineering Analysis EA04-003.
ON MARCH 3, 2004, GENERAL MOTORS NOTIFIED ODI THAT IT WAS RECALLING APPROXIMATELY 94,000 MY 1995-97 OLDSMOBILE AURORA VEHICLES EQUIPPED WITH 4.0L V8 ENGINES (RPO L47 - VIN8 C) TO ADDRESS CONCERNS WITH UNDERHOOD FUEL LEAKAGE FROM CRACKED FUEL RAILS AND, IN SOME OF THE VEHICLES, CRACKED FUEL RETURN LINES. ACCORDING TO GM, THE NYLON TUBING (PA12) USED IN THE FUEL RAIL CONSTRUCTION IN THESE VEHICLES MAY DEGRADE AND CRACK.GM'S SUPPLIER ATTRIBUTED THE CRACKING TO THE COMBINED EFFECTS OF HEAT, TIME, ALCOHOL FUEL, FUEL PRESSURE CYCLING, AND DESIGN STRESSES.IN ADDITION, GM STATED THAT THE MY 1995 AURORA USES A UNIQUE UNDERHOOD FUEL RETURN LINE THAT MAY ALSO CRACK AT UNUSUALLY HIGH RATES.GM DEALERS WILL INSTALL A NEW FUEL RAIL CONSTRUCTED OUT OF STAINLESS STEEL IN ALL OF THE RECALLED VEHICLES AND WILL ALSO INSTALL A REVISED CHASSIS FUEL RETURN LINE IN THE MY 1995 AURORAS. ON APRIL 16, 2004, GENERAL MOTORS NOTIFIED ODI THAT IT WAS ADDING APPROXIMATELY 389,000 MY 1995-97 CADILLAC SEVILLE, DEVILLE AND ELDORADO VEHICLES EQUIPPED WITH 4.6L V8 ENGINES (RPO'S LD8 AND L37 - VIN8 Y AND 9) TO RECALL 04V-110.
THE RECALLED CADILLACS WILL RECEIVE THE NEW STAINLESS STEEL FUEL RAILS.THIS ENGINEERING ANALYSIS IS CLOSED.
Vehicles and equipment listed for this investigation
NHTSA's investigations file lists these vehicles and equipment for Engineering Analysis EA04-003. 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.
Free VIN check: decode a VIN to see its year, make and model.
Sources
NHTSA's investigation record for EA04-003
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.