Broncorambler
Bishop, CA
New Member
Joined: 01/05/2021
View Profile
 Offline
|
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
|
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
|
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
|
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
|
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
|
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
|
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
|
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
|
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
|
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.
|
|
|
