Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
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 08-29-2010, 03:11 PM   #1
Junior Member
Join Date: Aug 2010
Posts: 2
Low Air

Have a warning message that we have low pressure P3 - Don't know what that means but can not hold pressure in the back of our motorhome.

SLJackson is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com 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 08-29-2010, 03:57 PM   #2
Senior Member
KIX's Avatar

Join Date: Dec 2006
Location: St. Augustine, FL
Posts: 3,580
Originally Posted by SLJackson View Post
Have a warning message that we have low pressure P3 - Don't know what that means but can not hold pressure in the back of our motorhome.
I betting that someone may be able to help you out IF you can provide stuff like what motorhome you are talking about, just for a place to start.

'02 Ultimate Advantage 40J Spartan MM - Cummins ISC
2013 Jeep Rubicon JK Unlimited
KIX is offline   Reply With Quote
Old 08-29-2010, 04:13 PM   #3
Senior Member
GaryKD's Avatar
Newmar Owners Club
Join Date: Jul 2006
Location: Wellington, Florida
Posts: 12,533
Hi SLJackson,
Welcome to iRV2. We do need additional information to provide some assistance. Make, model, year of coach, chassis manufacturer, air suspension, front or back or both is reading low, etc? Please provide as much information as you can.

2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours
GaryKD is offline   Reply With Quote
Old 08-29-2010, 09:06 PM   #4
Moderator Emeritus
Gary RVRoamer's Avatar

Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 18,635
In any case, low air pressure means exactly that. If you are referring to the rear air tank on a diesel pusher coach, that tank generally provides air pressure for the suspension. The onboard compressor can keep up with small leaks easily, so you must have a MAJOR air leak, e.g. a busted hose or air bag. Get it checked out ASAP.

The front tank serves the air brakes, so those are still ok.
Gary Brinck
Former owner of 2004 American Tradition
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
Gary RVRoamer is offline   Reply With Quote
Old 08-30-2010, 06:14 AM   #5
Senior Member
H. Miller's Avatar
Monaco Owners Club
Texas Boomers Club
Join Date: Jan 2009
Posts: 2,523
Does everyone know how to find additional information for a member???
The "about me" info says it is a 36' Gulfstream Crescendo.....Knowing nothing about the Gulfstream line that doesn't help me
Hal & Ginny Miller '04 Beaver Santiam PRT40
'04 Saturn Vue - US Gear Brake - Blue Ox tow
3"girls" (2 Irish Setters - 1 Retriever) - RIP Annie & Emily (12/26/2017)
H. Miller is offline   Reply With Quote
Old 08-30-2010, 06:35 AM   #6
Junior Member
Join Date: Aug 2010
Posts: 2
Low Pressure

Thanks everyone - I did use the phone number for Freightliner help and we found that if we messed with our MMDC the pressure popped back up to normal. The only problem right now is if you move the wires it goes back to zero. So going to try contact spray while we try to find a new one.

Thank you - everyone for you response. PJ
SLJackson is offline   Reply With Quote
Old 08-31-2010, 02:54 PM   #7
Senior Member
Alpine Owners Club
Join Date: May 2008
Location: Vancouver, WA
Posts: 2,226
Ok, since I worked in the Electrical Industry with high voltage systems. We always used this stuff when we wanted to prevent corrision on electrical systems. I use it on my batteries, and any electrical connection subject to high acid, or water, or a place hard to get too, which might corrode over time.

I recommend you get a can from any good electrical supplier, Lowes and HD won't have it. A small can will last you forever.

Sanchem NOOXID electrical grease & electrically conductive grease dielectric grease and contact lubricants

Monty & Janet - 2007 Alpine APEX 40 MDTS
S/N - 75715 - Retired - Master Certified RV Tech
Old Rv'er is offline   Reply With Quote

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
How long should air suspension hold air? marka Spartan Motorhome Chassis Forum 18 09-07-2010 02:13 AM
Air Ride Leveling linkage 94-Newmar Spartan Motorhome Chassis Forum 5 08-01-2010 08:11 AM
Air Spring leveling valve adjustment repair TQ60 MH-General Discussions & Problems 2 07-12-2010 08:51 PM
Is this the way your chassis air compressor works? Greg-09 MH-General Discussions & Problems 11 10-30-2009 05:46 PM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:49 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.