Free 7 Day Trial RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Monaco Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 12-06-2021, 08:27 PM   #1
Junior Member
Join Date: Dec 2019
Posts: 25
08 ISL 425hp cummins lift pump

I had a 400ISL in a 03 Dynasty that I upgraded to a Fass lift pump that ran all the time. Does anyone know if the ISL 425hp lift pump runs all the time or if there is any benefits from installing an aftermarket fuel pump. Is there any other things that I should be concerned about or plan to upgrade.
2003 Monaco Dynasty Baroness 400hp ISL
21 Ram 3500 H.O. Drw cc 4x4
19 Can Am Maverick X3 XRS, 17 Jeep Wrangler
Cclark746 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free! RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 12-06-2021, 09:50 PM   #2
Moderator Emeritus
barmcd's Avatar

Monaco Owners Club
Texas Boomers Club
Join Date: Nov 2015
Location: Central Texas
Posts: 13,340
I'm pretty sure your coach doesn't have a CAPS system, I think that was only for a few years in the very early 2000s.
Dennis and Katherine
2000 Monaco Dynasty
barmcd is offline   Reply With Quote
Old 12-07-2021, 07:25 AM   #3
Senior Member
jacwjames's Avatar
Monaco Owners Club
Join Date: Jun 2014
Posts: 10,379
If you don't have one create an account on the Cummins Quickserve site.
They've changed the way you have to create an account so you will have to work through it, you may have to call them.
But it is worth it. The site will enable you get a lot of information on your engine including parts, maintenance, and trouble shooting guides.

You can see the fuel system and see if you do have a lift pump, I am not sure, at some point Cummins abandoned the CAPS pump.
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
jacwjames is offline   Reply With Quote

cummins, pump

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Cummins ISL 425hp egr delete kit caleb1 Class A Motorhome Discussions 26 05-04-2020 12:00 PM
Cummins ISL 425hp 2008 bobwallace Cummins Engines 15 03-09-2016 08:10 AM
ISL 8.9L 425hp Bruexx Cummins Engines 8 09-10-2009 11:06 PM

» Featured Campgrounds

Reviews provided by

All times are GMT -6. The time now is 06:00 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.