RV.Net Open Roads Forum: Holiday Rambler in tank fuel pump quit. Cant find relay?

RV Blog

  |  

RV Sales

  |  

Campgrounds

  |  

RV Parks

  |  

RV Club

  |  

RV Buyers Guide

  |  

Roadside Assistance

  |  

Extended Service Plan

  |  

RV Travel Assistance

  |  

RV Credit Card

  |  

RV Loans

Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Class A Motorhomes

Open Roads Forum  >  Class A Motorhomes  >  General Topics

 > Holiday Rambler in tank fuel pump quit. Cant find relay?

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 2  
Next
Sponsored By:
Broncorambler

Bishop, CA

New Member

Joined: 01/05/2021

View Profile


Offline
Posted: 01/10/21 11:15pm Link  |  Quote  |  Print  |  Notify Moderator

In tank fuel pump has quit in my 2004 Holiday Rambler Neptune diesel pusher and cant find the fuse or relay for it.
Monaco has identical model rig under different name, but since out of business there are no techs to contact!
Anyone know of a contact who knows these brands well or where might find an electrical schematic to trace down the fuse or relay?
Hope to avoid dropping tank if can, because scan tool shows no power to the pump. Thanks for any help.

dougrainer

Carrolton, Texas

Senior Member

Joined: 06/11/2007

View Profile


Offline
Posted: 01/11/21 10:49am Link  |  Quote  |  Print  |  Notify Moderator

https://big.nyc3.cdn.digitaloceanspaces.........tune.pdf?mtime=20201116123133&focal=none

Page 322 Doug

wa8yxm

Wherever I happen to park

Senior Member

Joined: 07/04/2006

View Profile


Offline
Posted: 01/11/21 04:35pm Link  |  Quote  |  Print  |  Notify Moderator

I do not know the chassis but I do know Workhorse. And GM in general.

On a workhorse front and center.. open the hood and if like me you are six foot. Directly in front (Center) is a black plastic box.. It's in there

On my 1992 Lumina the relays were on the top front rail (Radiator mount rail) passanger side. and it's one of them.

Generally relays are all "Grouped"

Never had a fuel pump relay fail
Did have the starter pilot relay fail (Yup right next door) fixed it (Actually fixed the relay... .Yup I know how to do that).

Horn relay is there too.
HEVAC blower.. Same spot.


Home is where I park it.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times


corgidad

Florida

Full Member

Joined: 10/11/2007

View Profile



Good Sam RV Club Member

Offline
Posted: 01/11/21 06:09pm Link  |  Quote  |  Print  |  Notify Moderator

Join the group monacoers.org it is a group dedicated to all older Monaco products. There is a wealth of information on the group.

Broncorambler

Bishop, CA

New Member

Joined: 01/05/2021

View Profile


Offline
Posted: 01/11/21 06:18pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks but not a GM. Its a pusher rear engine with a cummins diesel.
No hood. Small fuse box in rear lower battery cabinet and large fusebox in outside cabinet below drivers window.
Fuses and relays labeled but none labeled as fuel pump so kind of stumped.
Just learned Monaco/Holiday Rambler lost all pre 2011 records, diagrams and schematics in a fire darn it, so on my own it appears.

Broncorambler

Bishop, CA

New Member

Joined: 01/05/2021

View Profile


Offline
Posted: 01/11/21 06:23pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks for link to manual so have digital and hard copy now. No mention of auxiliary fuel pump in manual though.
Should be able to trace leads somewhere if lucky but many wires bundled together down the frame.

* This post was edited 01/11/21 06:29pm by Broncorambler *

Broncorambler

Bishop, CA

New Member

Joined: 01/05/2021

View Profile


Offline
Posted: 01/11/21 06:34pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks Doug, but no fuel pump reference on page 322 I can see?
Do you see something im missing?

Also thanks to poster for Monaco group link!

Ivylog

Blairsville, GA and WPB, FL.

Senior Member

Joined: 06/30/2004

View Profile


Offline
Posted: 01/11/21 08:02pm Link  |  Quote  |  Print  |  Notify Moderator

The Cummins engine has a 12V fuel lift pump on the engine ...didn’t find a pump in the tank on page 397.


This post is my opinion (free advice). It is not intended to influence anyone's judgment nor do I advocate anyone do what I propose.

08 HR Navigator 45'
Sold 04 Dynasty after 14 great years.
[url=https://i.

oldave

Tx

Full Member

Joined: 06/19/2018

View Profile



Good Sam RV Club Member

Offline
Posted: 01/11/21 08:09pm Link  |  Quote  |  Print  |  Notify Moderator

Are you sure it has a fuel pump in the tank? My Windsor doesn't have that, it
has an electric fuel lift pump mounted on the engine. I can hear it run for
a while when I turn the ignition on.

What sort of trouble are you having?

Broncorambler

Bishop, CA

New Member

Joined: 01/05/2021

View Profile


Offline
Posted: 01/11/21 09:50pm Link  |  Quote  |  Print  |  Notify Moderator

The 300 cummins starts and idles fine. Goes into high idle fine and even revs if not under load. Once in gear with brake set or driving it will stumble, rebound and then stumble again in a cycling way like running out of fuel.

My diesel mechanics scan tool shows no fuel pressure from any aux fuel pump, but it does show vac. pressure from hi pressure pump drawing fuel to the engine. Dont know for certain there is an aux pump, but assuming there is because tank is over 20 feet from the engine and seems should be one. Manual makes no mention of one tho?
On top of tank there are number of wires going thru a portal into the tank and seems like more than needed for sending unit.
Two good diesel mechanics believe Cumminns ISB300 engines have an aux pump, but could they be wrong?
Manual does mention that clogged tank vent can give issues and guess id better check it out, but didnt ghink could be culprit.

Hoping might be some good techs on the Monaco group provuded me, but busy next couple days. Thanks much for replies and advice.

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 2  
Next

Open Roads Forum  >  Class A Motorhomes  >  General Topics

 > Holiday Rambler in tank fuel pump quit. Cant find relay?
Search:   Advanced Search

Search only in Class A Motorhomes


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2021 CWI, Inc. © 2021 Good Sam Enterprises, LLC. All Rights Reserved.