2004 Winnebago Adventurer Engine cooling Problems
- Complaints
- 1about this part
- Share
- 5%of 22 total for the year
- Median mileage
- 26,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine cooling of the 2004 Winnebago Adventurer, 5% of the 22 complaints for this model year. Where a mileage was given, the median is 26,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I own a 2004 Winnebago Adventurer wpg38r. I incurred what amounted to a premature failure of the exhaust system on my on a generator, directly caused by Winnebago ignoring onan's recommended installation instructions. Those instructions specifically state a support bracket be installed if the tailpipe assembly is more than 18 long. The tailpipe assembly on this unit is 25 long. The fix, if caught early on cost me $725.00. My real concern involves safety. Onan warns in their installation instructions a hot exhaust pipe can cause ---- severe personal injury or death. …”
NHTSA complaint #10381119, filed 2011-02, 26,000 milesEngine cooling: other model years
Other parts of the 2004 Winnebago Adventurer
10 complaintsEquipment
4 complaintsFuel system
3 complaintsElectrical system
2 complaintsSuspension
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsSeat belts
1 complaintsSeats
1 complaintsBody and structure
1 complaintsTires
1 complaintsTransmission and drivetrain
1 complaintsWheels
1 complaints
← All problems reported for the 2004 Winnebago Adventurer
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology