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View Poll Results: DEF Head Failure - Yes or No
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Yes, failure on a Freightliner chassis.
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20 |
10.31% |
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No, Freightliner has been good to go!
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107 |
55.15% |
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Yes, failure on a Spartan chassis.
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47 |
24.23% |
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No, Spartan has been good to go!
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20 |
10.31% |
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08-14-2021, 12:26 PM
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#15
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Junior Member
Join Date: Jul 2010
Posts: 8
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2012 mountain aire 450 ISL replace.it 4 years ago.. told to keep the tank full.. maybe it will help..
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08-14-2021, 12:49 PM
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#16
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 24,125
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I'm sure the odds/percentage of having one fail on either chassis, and especially on a non Shaw system, is pretty small. But.....if you're in that small percentage, what a pain. Hopefully you're near a facility that can get and change one for you.
I know it was probably a waste of money, but I bought a spare. There were only two out west, mine came from Utah. I'm guessing you could probably get one overnighted if you had to.
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Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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08-14-2021, 04:58 PM
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#17
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Senior Member
Newmar Owners Club Winnebago Owners Club Spartan Chassis RV Trip Wizard
Join Date: Mar 2006
Location: Tyler, Texas
Posts: 573
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My 2019 Mountain Aire on a Spartan Chassis had a failure in July of 2020... 15K miles.
__________________
Millard & Sherry
2019 Mountain Aire 4018
Toad 2014 Honda CRV or 2019 GMC Canyon
M&G Braking-Roadmaster Towbar
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08-14-2021, 05:32 PM
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#18
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Senior Member
Join Date: Jun 2010
Posts: 112
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30000 miles no problems, 2015 Newmar 3436 Ventana .
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Dave & Nancy
2015 Newmar Ventana 3436, 37k mi.
HydraLift & Jeep Wrangler
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08-14-2021, 05:44 PM
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#19
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Member
Join Date: May 2016
Posts: 88
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2016 Endevor 16,000 miles ISL9 no issues
__________________
2019 American Coach Dream 45A
2021 Jeep Gladiator
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08-14-2021, 06:31 PM
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#20
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Senior Member
Newmar Owners Club Spartan Chassis
Join Date: Jun 2017
Posts: 1,473
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My DEF head failed in March 2021. I didn’t really see a need to respond to yet another thread on the subject, but don’t take the lack of user response as an indication that the problem is not very prevalent. Perhaps folks just want this issue to go away and didn’t see the need to respond to yet another DEF thread.
__________________
2018 Newmar Mountain Aire 4531
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08-15-2021, 09:59 AM
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#21
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Senior Member
Join Date: Apr 2016
Location: Las Vegas, Nevada
Posts: 353
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2016 Dutch Star 4369, 50,000 miles with no DEF related issues.
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Tom & Linda
2016 Dutch Star 4369
2016 Jeep Wrangler Rubicon Unlimited
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08-16-2021, 05:04 AM
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#22
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Member
Newmar Owners Club
Join Date: Jun 2017
Location: Full Time
Posts: 76
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2017 Dutch Star 4018 Freightliner chassis put in service 9/16
9/18 - 14795 miles DEF head failed and replaced
11/20 - 31218 miles DEF head failed and replaced
__________________
2017 Newmar Dutchstar 4018
2022 Ford F-150 2017 Jeep Grand Cherokee
Blue Ox Avail & Rvi Brake, Freightliner/Allison
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08-16-2021, 05:22 AM
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#23
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Senior Member
Newmar Owners Club Spartan Chassis
Join Date: Sep 2012
Posts: 205
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2017 Essex - Spartan chassis. DEF head failure 27,900 miles on 6/30 ... replaced 7/23.
__________________
Roger & Judith
2023 Newmar Essex 4595, Spartan K3 chassis
2019 GMC Yukon Denali, Blue Ox, Air Force One
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08-16-2021, 06:56 AM
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#24
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Senior Member
Newmar Owners Club Spartan Chassis
Join Date: Sep 2013
Location: Texas
Posts: 282
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2019 LA Spartan chassis. DEF head failed 7/6 replaced 8/11. 28000 miles.
__________________
Ronny and Margie
2019 London Aire /2019 F-250 King Ranch
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08-17-2021, 10:39 AM
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#25
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Senior Member
Join Date: Jun 2015
Posts: 1,077
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Quote:
Originally Posted by flyboy013
My DEF head failed in March 2021. I didn’t really see a need to respond to yet another thread on the subject, but don’t take the lack of user response as an indication that the problem is not very prevalent. Perhaps folks just want this issue to go away and didn’t see the need to respond to yet another DEF thread.
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Anywhere else but on this forum, and I would agree with you.
Especially over the last year. -Paul
__________________
2017 Ventana 4369
towing a 2013 Honda CRV
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08-17-2021, 10:48 AM
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#26
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Senior Member
Newmar Owners Club Spartan Chassis
Join Date: Sep 2020
Location: Ga.
Posts: 107
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I had a Dozier valve go bad on a 2017 DS Spartan
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08-17-2021, 11:16 AM
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#27
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Member
Join Date: Aug 2019
Posts: 82
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I was at Camp Freightliner a couple weeks ago. FCCC rep said "All the DEF head issues that have everyone's hair on fire are Spartan chassis issues. Not Freightliner. However, the Valor TPMS system on newer FL Chassis is Freightliners DEF head issue.
__________________
2013 Newmar Mountain Aire 4347 Diesel Pusher Freightliner XCR Chassis
2015 GMC Sierra 4WD towed vehicle
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08-17-2021, 11:49 AM
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#28
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Senior Member
Newmar Owners Club
Join Date: Jul 2011
Posts: 3,480
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Quote:
Originally Posted by Dave Reyburn
I was at Camp Freightliner a couple weeks ago. FCCC rep said "All the DEF head issues that have everyone's hair on fire are Spartan chassis issues. Not Freightliner. However, the Valor TPMS system on newer FL Chassis is Freightliners DEF head issue.
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Ha ha. Truth!
__________________
2021 DSDP 4326 Freightliner
2023 Winnebago ERA 70A
2005 KSDP 3910 Spartan
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