RV Trip Planning Discussions

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

Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  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 08-30-2018, 08:28 AM   #1
Senior Member
 
MikeGriffin's Avatar
 
Join Date: Jan 2015
Posts: 354
Loud "air escaping" noise, then Check Engine light

Traveling down the interstate the other day, I began to notice a loud hissing noise, kind of like air escaping, as people passed me. It seemed as though the noise might be coming from my coach because I didn't hear it unless the sound was bouncing off of the passing vehicles. When I pulled over to check, I couldn't hear anything. However, as soon as we were back on the road it started up again.

After quite a few miles, the check engine light came on with a small beep and the LCD display showed "Check Engine!". We pulled over and got instructions from Freightliner to view the engine fault code, which read "SPN 102 FMI 18 SA 0". I was told that it meant that air was not getting to the turbo and that I could keep driving until getting it repaired, but it may be a bit slower because the turbo wasn't getting enough air. Likely a loose or broken hose.

So we went to a nearby Cummins service facility. Sure enough, it was the Charge Air Cooler Hose. It looked as though one of the clamps holding it in position had "helped" it get tear over the past couple of years.

We ordered and they installed a new hose and all is well. I'm very aware that this topic has been discussed before on this forum, but wanted to help others by providing a clear explanation as to how the problem is first detected and a little bit about the probable cause.

The photos show the Hose (it's orange) in the lower left side of the engine compartment and a close-up of the tear. I also included the sticker that came with the new one so that everyone could see the part number.
Attached Thumbnails
Click image for larger version

Name:	20180829_155728.jpg
Views:	53
Size:	200.5 KB
ID:	216955   Click image for larger version

Name:	20180829_155852.jpg
Views:	51
Size:	180.2 KB
ID:	216956  

__________________

__________________
2015 Dutch Star 4369. Please see my YouTube channel (RV Life in the Slow Lane) for various RV help and tech videos.
MikeGriffin 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 08-30-2018, 09:35 AM   #2
"Formerly Diplomat Don"
 
Dutch Star Don's Avatar
 
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 13,320
Glad you found the issue so quickly. Kind of unusual that the hose tore like that unless the clamp was seated over the hose and over the tubing.
__________________

__________________
Don & Mary
2019 Newmar Dutch Star 4018
2016 GMC Canyon 4WD Crew Cab
Dutch Star Don is offline   Reply With Quote
Old 08-30-2018, 10:55 AM   #3
Senior Member
 
Jim_L's Avatar
 
Join Date: Jan 2006
Location: Indianapolis
Posts: 242
I previously owned a 2008 KSDP that had a similar issue. Usually black exhaust when the hose came off. On that coach, the metal tubing that is connected with the hose was not lined up and eventually the hose would pry off. Solution was to loosen all hoses (there are a few) and line the tubing up better and then use two hose clamps on each end each hose. I now have a 2014 DSDP and two hose clamps are used. I might suggest that you take a close look at yours and determine whether the alignment of the connected hose is proper. The picture suggest that they are not and the resolution is to loosen all hoses and retighten after lining them up better.
__________________
2014 Newmar DSDP 4018-450
Jim_L is offline   Reply With Quote
Old 08-30-2018, 10:58 AM   #4
Senior Member
 
Join Date: May 2017
Location: Metamora, MI
Posts: 2,290
wonder if the nipple at the end of the steel pipe is a bit sharp and due to the engine rocking on it's motor mounts, eventually the pipe sawed thru the hose.

Next time under the hood I would just take a quick look at the motor mounts to see if it's torn. Unlikely, but one of the possible causes. You might have to lift the engine up a bit (only just enough) with a floor jack to see if the mount is separated.
__________________
2002 Newmar Mountain Aire Limited 4370 w/ Spartan K2 and Cummins 500hp
ASE Master Certified (a long.....time ago...)
Dav L is offline   Reply With Quote
Old 08-30-2018, 01:15 PM   #5
Senior Member
 
lostinfla's Avatar


 
Join Date: Oct 2014
Location: Ft. Myers, Fl.
Posts: 1,219
Glad it was a simple fix Mike. Another reason to carry duct tape.
__________________
Jim, Bonnie & Irma (our hurricane rescue)
2016 DSDP 3736 all electric, custom paint and interior, HWH Active Air.
2014 Wrangler Altitude

Prov. 3: 5-6
lostinfla is offline   Reply With Quote
Old 08-30-2018, 04:36 PM   #6
Senior Member
 
Norm Mac's Avatar


 
Newmar Owners Club
Freightliner Owners Club
Join Date: Mar 2012
Location: Central Massachusetts
Posts: 768
Okay Mike, Now you have me paranoid! I had to run out and check mine.
__________________
Norm & Ellen Proud to be one of the HOOTS
2015 Newmar DutchStar 4369
If I knew retirement was so much fun, I would have done it in my twenties!
Norm Mac is offline   Reply With Quote
Old 08-30-2018, 05:02 PM   #7
Senior Member
 
RJ51's Avatar
 
Join Date: Nov 2015
Location: Sparks, Nevada
Posts: 386
Thanks Mike for that post, glad it was an easy fix. I will keep an eye on mine.
__________________
Ralph 2017 Newmar Dutch Star 4018
RJ51 is offline   Reply With Quote
Old 08-30-2018, 05:11 PM   #8
Senior Member
 
lostinfla's Avatar


 
Join Date: Oct 2014
Location: Ft. Myers, Fl.
Posts: 1,219
Quote:
Originally Posted by Norm Mac View Post
Okay Mike, Now you have me paranoid! I had to run out and check mine.
Ditto!
lostinfla is offline   Reply With Quote
Old 08-31-2018, 12:27 AM   #9
dp7
Senior Member
 
dp7's Avatar
 
Join Date: Oct 2016
Location: So Cal
Posts: 344
Surprised that FL said to keep driving. Wouldn't this allow unfiltered air to enter the turbo?
__________________
2017 Newmar Ventana 3709
2017 Jeep Wrangler (2 door)
dp7 is offline   Reply With Quote
Old 08-31-2018, 06:00 AM   #10
Senior Member
 
Join Date: Jul 2014
Posts: 17,619
Quote:
Originally Posted by dp7 View Post
Surprised that FL said to keep driving. Wouldn't this allow unfiltered air to enter the turbo?
No, the break is after the turbocharger, that is always pushing some air, and always under positive pressure.
__________________

twinboat is offline   Reply With Quote
Reply

Tags
air, check engine light, engine, light, noise



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
Mysterious escaping air sound USMC_1345 Cummins Engines 9 11-20-2016 01:03 PM
Check engine light blinked on then off once during drive SteveOGilroy Damon 3 02-27-2013 12:09 PM
"Stop Engine" / "Check Engine" jtharley Caterpillar Engine Forum 19 09-29-2010 04:23 PM
Escaping Air WeBeGone2 National RV Owner's Forum 2 08-28-2009 08:03 PM
Hot water, then cold, then hot, then cold VACMAN Newmar Owner's Forum 4 05-26-2009 09:48 AM

» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:07 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.