NHTSA Office of Defects Investigation
Engineering Analysis EA08-002: ENGINE COOLING FAN BLADE FRACTURE
- Closed
NHTSA's Office of Defects Investigation opened Engineering Analysis EA08-002 on January 4, 2008, the day it closed Recall Query RQ07-002, whose summary cites it, and closed it on March 14, 2008. NHTSA's investigations file lists 4 models from 4 makes for it.
Updated daily from NHTSA's investigations file
Key facts
- NHTSA number
- EA08-002 (also written EA08002)
- 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 14, 2008
- Opened
- Closed
- Vehicle or equipment manufacturers
- Winnebago Industries, Inc.; Volkswagen Group of America, Inc.
- Component
- Engine and Engine Cooling — Cooling System — Fan
- Vehicles and equipment
- 4 models from 4 makes, including the Rialta Rialta and Winnebago Vista
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 EA08-002.
THE SUBJECT VEHICLES ARE BUILT ON A VOLKSWAGEN EUROVAN CHASSIS AND ARE CLASS C MOTOR HOMES. ON SEPTEMBER 5, 2007, THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED THIS INVESTIGATION AS RQ 07-002 AFTER RECEIVING FOUR CONSUMER REPORTS OF FAN BLADE FAILURE ON MODEL YEAR 2002 WINNEBAGO RIALTA AND VISTA VEHICLES.AS A RESULT OF ADDITIONAL INFORMATION RECEIVED FROM VOLKSWAGEN IN RESPONSE TO RQ 07-002, THE INVESTIGATION WAS UPGRADED TO ENGINEERING ANALYSIS (EA) 08-002.
THE SCOPE OF THE EA INVESTIGATION WAS ALSO EXPANDED TO COVER MODEL YEARS 2001 THROUGH 2004 RIALTA AND VISTA, 2002 THROUGH 2004 SUNSTAR, AND 2001 THROUGH 2003 EUROVAN.ALL OF THESE VEHICLES UTILIZE THE SAME ENGINE COOLING FAN.HOWEVER, THE WINNEBAGO VEHICLES ARE LARGER AND HEAVIER THAN THE EUROVAN.AS A CONSEQUENCE, THE COOLING FAN WOULD OPERATE MORE FREQUENTLY IN THE WINNEBAGO VEHICLES COMPARED TO THE EUROVAN FOR THE SAME ON-ROAD OPERATING CONDITIONS.ANALYSIS OF THE AVAILABLE DATA CONCERNING THE PROBLEM EXPERIENCE INDICATES THAT IT PREDOMINATELY AFFECTS THE MY 2002 WINNEBAGO MODELS.WINNEBAGO ACCOUNTS FOR 79% OF ALL THE REPORTS, BUT REPRESENTS ONLY 23% OF THE TOTAL SUBJECT VEHICLE POPULATION.THE MAJORITY OF THE WINNEBAGO REPORTS ARE FOR THE MODEL YEAR 2002 (64%).
THE DATA SHOW A DECLINING REPORT TREND, PARTICULARLY FOR THE 2002 WINNEBAGO.REPORTS ON THE 2002 WINNEBAGO REACHED A HIGH OF 11 REPORTS IN CALENDAR YEAR 2005, DROPPING TO THREE REPORTS IN 2006,TWO REPORTS IN 2007, AND ONE REPORT IN 2008.
AN EXISTING SAFETY RELATED DEFECT TREND 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 TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.
Vehicles and equipment listed for this investigation
NHTSA's investigations file lists these vehicles and equipment for Engineering Analysis EA08-002. 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.
Itasca
All Itasca recallsRialta
All Rialta recallsVolkswagen
All Volkswagen recallsWinnebago
All Winnebago 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 EA08-002
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.