← New search

2004 Holiday Rambler Neptune

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

About this comparison →

How this year compares

Owner complaints by model year

Other model years Selected year
Compare all Neptune years →

Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

Limited mileage data: 4 of 5 reports include usable mileage. There isn’t enough coverage to show a useful chart.

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Suspension. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine And Engine Cooling. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

0 crash reports0 fire reports0 injury reports

Power Train complaints

1 reports
Clear category filter
86,000 miles · Oct 3, 2024
Power TrainSuspension

The contact owns a 2004 Holiday Rambler Neptune built on a Roadmaster chassis. The contact stated while driving approximately 30 MPH, the RV was swaying in the lane and the steering wheel shifted position and was horizontal. The contact stated no warning light was illuminated. The contact stopped the RV and observed that the re…

Read full complaint

The contact owns a 2004 Holiday Rambler Neptune built on a Roadmaster chassis. The contact stated while driving approximately 30 MPH, the RV was swaying in the lane and the steering wheel shifted position and was horizontal. The contact stated no warning light was illuminated. The contact stopped the RV and observed that the rear bumper was almost touching the road surface and the rear passenger side tire was almost touching the wheel well. The contact called an independent mechanic who drove to the location of the RV and examined the RV and determined that the rear suspension and rear axle had fractured and needed to be replaced. The contact had the RV towed to an independent mechanic however, the RV was not diagnosed or repaired. The contact had researched online and related the failure to NHTSA Campaign Number: 05V053000 (Suspension). The manufacturer was informed of the failure. The failure mileage was approximately 86,000.

NHTSA ODI #11617838

Official recalls

2

05V053000 · Suspension:rear:springs:leaf Spring Assembly

Feb 14, 2005

ON CERTAIN CLASS A MOTOR HOMES, THE SPACER PLATE UNDER THE TRAILING ARMS HAD A TRANSVERSE WELD WHICH CREATES A HEAT RISER AND CAUSE THE TRAILING ARMS TO CRACK.

Consequence & remedy

Consequence: THIS COULD CREATE ROUGH DRIVING CONDITIONS AND DAMAGE TO REAR SUSPENSION SYSTEM. THE DRIVER COULD LOOSE CONTROL OF THE MOTORHOME AND A CRASH COULD OCCUR WITHOUT PRIOR NOTICE.

Remedy: DEALERS WILL INSPECT THE REPLACE THE TRAILING ARMS FOR CRACKS AND REPLACING THE TRAILING ARMS AND U-BOLTS IN THE REAR SUSPENSION OF THE MOTORHOMES FREE OF CHARGE. THE RECALL BEGAN ON MARCH 29, 2005. OWNERS MAY CONTACT MONACO AT 1-800-685-6545.

04V038000 · Suspension:front

Jan 28, 2004

ON CERTAIN MOTORHOMES, THE I-BEAM LEAF IMITATOR IN THE FRONT AXLE SUSPENSION COULD CRACK AND BREAK DUE TO AN INADEQUATE WELDING PROCESS.

Consequence & remedy

Consequence: THE I-BEAMS ON THE FRONT AXLE AND THE PANARD BRACKET ON THE REAR AXLE COULD CRACK AND BREAK CAUSING THE DRIVER TO LOSE CONTROL OF THE VEHICLE INCREASING THE RISK OF A CRASH.

Remedy: DEALERS WILL REPLACE THE ORIGINAL I-BEAM. ALSO, DEALERS WILL WELD THE STIFFENERS FROM THE PANARD BAR BRACKET TO THE CENTER DIFFERENTIAL OF THE REAR AXLE HOUSING. OWNER NOTIFICATION BEGAN MARCH 1, 2004. OWNERS SHOULD CONTACT MONACO AT 1-877-466-6226.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

0

No exact-year investigations in this snapshot.