Good Sam Club Open Roads Forum: Class A Motorhomes: Air brake issues
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


Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
brianseay1

Bridgeport, Ala USA

Senior Member

Joined: 04/23/2004

View Profile



Good Sam RV Club Member

Offline
Posted: 04/12/22 09:49pm Link  |  Quote  |  Print  |  Notify Moderator

On our return trip home today I got he low air pressure warning light?buzzer on the dash and the #1 air gauge went crazy for about 3-5 seconds and then everything was fine. Couple miles down the road it did it again, then few more miles it cam on and stayed for a couple of minutes and the gauge was reading zero. Then it shot back up to regular pressure and light/buzzer went off. Never had any issues with braking during any of this. I stopped at the first rest area I came to while the light was on, got out to inspect to see if I could find any air leaks. Did not hear anything at all, no smell of heated/burning brakes. I turned the engine off and sat for a few minutes to see if I could get a call in to Freightliner, but had no luck. I was 87 miles from home. So I started back up and everything was fine. the remaining drive home it went off twice for about 5 seconds each time. The batteries are fine, so I'm not really sure where to start looking. Anyone have any ideas on what to check first ? I'm thinking a pressure sensor is going bad. Don't think it is an actual air leak because the air pressure goes back to normal within seconds of it acting up. Any help is greatly appreciated.


Brian & Neena & B.G.
B.G. 2014 Goldendoodle
2007 Coachmen Cross Country 389DS
300 HP Cummins Turbo Charged
03 Sahara Jeep Wrangler & 05 Harley Davidson Ultra Classic
2014 800 RZR4
Roll Tide Roll


wolfe10

Texas

Senior Member

Joined: 10/08/2000

View Profile


Offline
Posted: 04/13/22 06:29am Link  |  Quote  |  Print  |  Notify Moderator

What chassis?

There have been some failures of the "communication box" between air pressure sender and dash gauges.


Brett Wolfe
Ex: 2003 Alpine 38'FDDS
Ex: 1997 Safari 35'
Ex: 1993 Foretravel U240

Diesel RV Club:http://www.dieselrvclub.org/

brianseay1

Bridgeport, Ala USA

Senior Member

Joined: 04/23/2004

View Profile



Good Sam RV Club Member

Offline
Posted: 04/13/22 08:12am Link  |  Quote  |  Print  |  Notify Moderator

I am on the Freightliner chassis.

brianseay1

Bridgeport, Ala USA

Senior Member

Joined: 04/23/2004

View Profile



Good Sam RV Club Member

Offline
Posted: 04/13/22 10:08am Link  |  Quote  |  Print  |  Notify Moderator

Just spoke with a guy from Freightliner in Gaffney SC. He said it could be in my wiring harness if I had the white wires (which I do). He said there had been problems with the wiring harness causing faulty readings. Told me I needed to upgrade to the Pollic Jumper Harness (black wires). said the clips were tighter making for a better connection. If that didn't fix it, I could have a gauge going bad.

wa8yxm

Davison Michigan (East of Flint)

Senior Member

Joined: 07/04/2006

View Profile


Offline
Posted: 04/13/22 04:16pm Link  |  Quote  |  Print  |  Notify Moderator

Sure sounded like a CNL problem to me (Connection Now Loose) (Pun on the call of a ham radio operator I used to know. The suffix of his call was CNL He said Connecitons NOT loose. we often disagreed on that).

Likely a ground screw somewhere. (not however guaranteed)


Home was where I park it. but alas the.
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


Leeblev

Pinole, CA

Senior Member

Joined: 03/26/2004

View Profile






Posted: 04/13/22 04:18pm Link  |  Quote  |  Print  |  Notify Moderator

I had this happen to me on my 2001 Newmar Kountry Star w. Cummins on a Freightliner chassis. What I found out was the microprocessor for the rear air tank became faulty and caused the guage to go to zero, setting off my alarm and scaring the ----- out of me. it would return to normal pressure and do it again and again. Freightliner replaced the processor. When I took it to Freightliner, I had 90000+ on the odometer. When I picked my rig up, it had 46000 on it. The problem was that the microprocessors for the rear air tank, dash and engine (where mileage is stored) miscommunicated and put 45000 on the odometer. Neither Freightliner or Cummins could legally restore the mileage because of federal regulations. Solution? Sticker on door noting to add 44000 miles to the reading on the odometer. Both techs knew how and could fix the problem but legally could not because they didn't want to loose their license. Know and check your mileage before leaving the facility.


Lee
2001 36' Kountry Star DP


Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 

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:




© 2022 CWI, Inc. © 2022 Good Sam Enterprises, LLC. All Rights Reserved.