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11-04-2019, 09:15 AM
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#1
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Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Mar 2017
Location: Drumbo, Ontario
Posts: 96
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Ongoing 2008 UFO Probs. Rear 8.1 GM Vortec
I love the coach but have a lot of ongoing problems which has cost me a lot on Diagnostics. Allison, and Drive train analysis etc. etc.
Just had both exhaust manifolds replaced, also mufflers pipes etc. This is the GM Vortec 8.1 When I drove it home it lacked power and had the shakes. I went down through the access floor. The shop had broken a few plug leads and not connected some. I replaced all wires and is now good.
MY BIGGEST CONCERN IS I HAVE REPLACED THE DRIVER SIDE, LEFT SIDE MUFFLER 4 TIMES. REGARDLESS OF QUALITY THEY BREAK UP After approx. 1000 miles. Passenger side is ok.
Do any other rear engine UFO friends have a similar problem?
No error codes for lean or rich mixture?
Thanks....
__________________
Travelling with my wife Rita, and our Havanese Ambre, in our 2008 Winnebago/Itasca Latitude 39W, Workhorse UFO R26 Chassis, GM Vortec 8.1, Allison 6 spd. and 2016 Chev. Equinox LT in tow.
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11-04-2019, 09:23 AM
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#2
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Senior Member
Join Date: Dec 2009
Location: Out there, somewhere
Posts: 10,431
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What do you mean by "Break up" at or around a thousand miles? Are the mufflers just cracking/breaking/falling apart etc.? Are they or, at least the drivers side one, improperly mounted and with no support? Or, is the inside MELTING away from too hot of running conditions?
Scott
__________________
2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '20 Honda NC750X DCT
 2018 Goldwing Tour DCT Airbag
Retired-29.5 yrs, SDFD, Ham - KI6OND
Me, Karla and the Heidi character, (mini Schnauzer)!
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11-04-2019, 09:38 AM
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#3
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Senior Member
Join Date: Nov 2018
Location: Beaver Dam, Wisconsin
Posts: 5,960
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I agree, those UFO's are devilish. I hear the Air Force is investigating them again so you could call them up. Other wise just wait until they fly away. Everything will start working again after they leave. 
__________________
Paul Bristol - In the Wind. 
2025 Airstream Trade Wind
2024 Ford Expedition Max
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11-04-2019, 10:51 AM
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#4
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Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Mar 2017
Location: Drumbo, Ontario
Posts: 96
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Some came apart at the seams, some broke apart on the end cap joined to the tailpipe. Another the baffles disintegrated. My current stainless steel muffler has buckled, and the end seam is split.
__________________
Travelling with my wife Rita, and our Havanese Ambre, in our 2008 Winnebago/Itasca Latitude 39W, Workhorse UFO R26 Chassis, GM Vortec 8.1, Allison 6 spd. and 2016 Chev. Equinox LT in tow.
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11-04-2019, 11:30 AM
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#5
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Oct 2015
Posts: 1,718
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Quote:
Originally Posted by NCY-UFO
Some came apart at the seams, some broke apart on the end cap joined to the tailpipe. Another the baffles disintegrated. My current stainless steel muffler has buckled, and the end seam is split.
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Without knowing the layout of the exhaust system, my first thought is undue stress on the muffler, perhaps a broken motor mount or something similar that is causing the exhaust system to flex more than it is designed to.
__________________
Paul J Stough Iowa
2005 Winnebago Voyage 38J
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11-04-2019, 04:59 PM
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#6
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Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Mar 2017
Location: Drumbo, Ontario
Posts: 96
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Quote:
Originally Posted by Persistent
I agree, those UFO's are devilish. I hear the Air Force is investigating them again so you could call them up. Other wise just wait until they fly away. Everything will start working again after they leave. |
Not Funny.... This whole business has been very stressful. I appreciate help only please.....
__________________
Travelling with my wife Rita, and our Havanese Ambre, in our 2008 Winnebago/Itasca Latitude 39W, Workhorse UFO R26 Chassis, GM Vortec 8.1, Allison 6 spd. and 2016 Chev. Equinox LT in tow.
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11-04-2019, 05:06 PM
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#7
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Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Mar 2017
Location: Drumbo, Ontario
Posts: 96
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Come on people, Someone out there must have a clue for my problem? Maybe I should contact Jon of UltraRVProducts.com [Workhorse parts]
__________________
Travelling with my wife Rita, and our Havanese Ambre, in our 2008 Winnebago/Itasca Latitude 39W, Workhorse UFO R26 Chassis, GM Vortec 8.1, Allison 6 spd. and 2016 Chev. Equinox LT in tow.
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11-04-2019, 07:17 PM
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#8
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Senior Member
Join Date: Jan 2017
Posts: 7,494
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Quote:
Originally Posted by NCY-UFO
Come on people, Someone out there must have a clue for my problem? Maybe I should contact Jon of UltraRVProducts.com [Workhorse parts]
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Hi,
I have not heard of this issue before. When I had brake issues with my Workhorse UFO Ultra Rv helped me immensely.
__________________
2008 Phoenix Cruiser 3100
2012 Jeep Wrangler Sahara JKU.
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11-04-2019, 07:24 PM
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#9
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Aug 2007
Location: Sonoma County, CA
Posts: 6,595
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My UFO is 12 years old and has 80,000 miles and no exhaust problems so I can't help, sorry.
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Wayne & Roberta
08 Winnebago Destination 39W Gas UFO Workhorse Chassis......It's really weird being the same age as old people. I thought getting old would take much longer.
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11-05-2019, 06:02 AM
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#10
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Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Mar 2017
Location: Drumbo, Ontario
Posts: 96
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Quote:
Originally Posted by UFO Pilot
My UFO is 12 years old and has 80,000 miles and no exhaust problems so I can't help, sorry.
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That's amazing! 80k without exhaust probs. What on earth is going on with my coach?
__________________
Travelling with my wife Rita, and our Havanese Ambre, in our 2008 Winnebago/Itasca Latitude 39W, Workhorse UFO R26 Chassis, GM Vortec 8.1, Allison 6 spd. and 2016 Chev. Equinox LT in tow.
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11-05-2019, 06:16 AM
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#11
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Senior Member
Retired Fire Service RVer's
Join Date: Jun 2018
Posts: 101
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maybe have UFO pilot take photos of his exhaust system to see if there is any difference, hanger bracket or brace. Something is moving to make things break.
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11-05-2019, 06:34 AM
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#12
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Senior Member
Ford Super Duty Owner
Join Date: Jun 2008
Location: Melbourne Fl
Posts: 2,705
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Quote:
Originally Posted by mdka99
maybe have UFO pilot take photos of his exhaust system to see if there is any difference, hanger bracket or brace. Something is moving to make things break.
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Friend had UFO. BLEW 2 ENGINES. Cause was fan failure.
Both were covered under after market warranty.
Traded for Tiffin RED.
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11-05-2019, 01:58 PM
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#13
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Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Mar 2017
Location: Drumbo, Ontario
Posts: 96
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Quote:
Originally Posted by Russ Silber
Friend had UFO. BLEW 2 ENGINES. Cause was fan failure.
Both were covered under after market warranty.
Traded for Tiffin RED.
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My engine blew in 2017 while I was near Daytona FL. Left it there for 2 months, for engine replacement.
__________________
Travelling with my wife Rita, and our Havanese Ambre, in our 2008 Winnebago/Itasca Latitude 39W, Workhorse UFO R26 Chassis, GM Vortec 8.1, Allison 6 spd. and 2016 Chev. Equinox LT in tow.
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11-05-2019, 02:08 PM
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#14
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Senior Member
Join Date: Sep 2018
Posts: 1,944
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Quote:
Originally Posted by mdka99
maybe have UFO pilot take photos of his exhaust system to see if there is any difference, hanger bracket or brace. Something is moving to make things break.
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Solid advice. But it's possible something isn't moving, as in the exhaust on that side is too rigidly supported, or was moved away from it's original location. I've had that happen on an old AMC car I once owned that would chew through exhaust manifold donuts (straight 6) because the engine mounts flexed, but the exhaust supports were too rigid and they were holding the pipe too firmly while the engine moved.
The OP can also take a look at the side that's not having trouble to see if there's any obvious differences in the support scheme.
__________________
Tom & Jeri
2018 Coachmen Galleria 24T Li3
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