VehicleVerdict

2004 Holiday Rambler Neptune problems

Verdict · NHTSA data

Limited data — recalls on file

NHTSA has just 6 complaints on file for the 2004 Holiday Rambler Neptune — too few to judge reliability from owner reports alone — but 2 recall campaigns apply to this year, so any used example should have its VIN checked for completed recall work.

6

NHTSA complaints

2

Recalls

0

Investigations

0

Crash-involved

0

Fires reported

0

Injuries

0

Deaths

—

NCAP overall

How does 2004 compare to other Neptune years?

Neptune NHTSA complaints by model year, 2004 highlighted6 complaints2002: 3 complaints2003: 4 complaints2004: 6 complaints2005: 4 complaints2006: 5 complaints2007: 6 complaints2008: 1 complaints2009: 0 complaints2010: 0 complaints2011: 0 complaints
Neptune NHTSA complaints by model year, 2004 highlighted. Red bars are years to avoid.

See all Neptune years to avoid →

What are the most common 2004 Holiday Rambler Neptune problems?

ComponentComplaintsShare
Suspension467%
Engine117%
Transmission117%

Does the 2004 Holiday Rambler Neptune have recalls?

2 NHTSA recall campaigns on file. Recall repairs are free at franchised dealers.

05V053000SuspensionFebruary 14, 2005 · 2,827 units

Defect

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

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.

04V038000SuspensionJanuary 28, 2004 · 2,156 units

Defect

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

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.

Consumer complaints filed with NHTSA

Representative excerpts, cleaned of personal information. These are consumer statements, not verified defects.

“FOUND BOTH REAR TRAILING ARMS TO BE CRACKED UPON INSPECTION. REPLACED BOTH ARMS TO CORRECT PROBLEM. OLD ARMS WERE CRACKED TO A POINT WHERE TOTAL FAILURE WAS EMINENT. *TR”

Complaint filed with NHTSA · Suspension · March 6, 2010

“WITH ONLY 14,000 MILES ON VEHICLE THE ALUMINUM RADIATOR BEGAN LEAKING WHERE THE CORE IS ATTACHED TO THE TANK. MANUFACTURE HAS SINCE REPLACED ALUMINUM WITH STEEL RADIATORS BUT WOULD NOT AGREE TO PAY FOR ANY OF THE REPLACEMENT SINCE THE WARRANTY TIME HAS EXPIRED. I HAVE TALKED TO OTHER PEOPLE WITH…”

Complaint filed with NHTSA · Engine · September 6, 2007

“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…”

Complaint filed with NHTSA · Transmission · September 28, 2024

2004 Holiday Rambler Neptune — common questions

Is the 2004 Holiday Rambler Neptune reliable?

The record is thin — 6 NHTSA complaints — so owner-report data can't strongly confirm reliability either way, though 2 recalls should be verified as completed.

Does the 2004 Holiday Rambler Neptune have recalls?

Yes — NHTSA lists 2 recall campaigns affecting the 2004 Holiday Rambler Neptune. Recall repairs are free at franchised dealers; check the VIN at nhtsa.gov/recalls to confirm the work was done.

Related

Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.

Compiled by Sharon Ben-Moshe, Founder.