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Howling Noise
10-03-2011, 09:06 AM
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#1
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Junior Member
Join Date: Oct 2011
Posts: 17
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Just bought a new 2011 Fleetwood Bounder 35H M/H. M/H is built on the Ford chassis. Noticed an unusual howling noise while crusing on backroads. Noise occurs between 38-45 MPH. Shifted into different gear and noise was still there so it seems to be vehicle speed related and not related to engine speed. Has anyone out there had a similar issue or have any ideas? 
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10-03-2011, 09:37 AM
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#2
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Senior Member
Ford Super Duty Owner Fleetwood Owners Club
Join Date: Sep 2007
Location: Rancho Cordova, California
Posts: 731
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Quote:
Originally Posted by aschuller1
Just bought a new 2011 Fleetwood Bounder 35H M/H. M/H is built on the Ford chassis. Noticed an unusual howling noise while crusing on backroads. Noise occurs between 38-45 MPH. Shifted into different gear and noise was still there so it seems to be vehicle speed related and not related to engine speed. Has anyone out there had a similar issue or have any ideas? |
If it's what I think it is, hundreds of us have had the same problem.
Bounder front grills are the cause of harmonic resonance and should be filled with very fine sand by your dealer and closed on both sides with a wood dowel. This problem started in 2006 with the advent of a new front cap and grill design and I thought this was finally corrected in plant.
Yours must have not been filled.
Steve
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Steve Bernard
2008 Bounder 35E/Ford
2007 Saturn Vue RedLine
Bounders United/Gold Country Roos
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10-22-2011, 05:34 AM
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#3
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Member
Join Date: Dec 2000
Location: Pasco County Florida
Posts: 92
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i noticed the same thing on my 2011 35H. I was thinking it might be the holes in the aluminum rims; but now I'll check my grille too. Thanks.
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2011 Bounder 35H
2012 Ford Escape Ltd
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10-22-2011, 05:57 AM
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#4
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Senior Member
Workhorse Chassis Owner Fleetwood Owners Club
Join Date: Mar 2009
Posts: 560
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Could it also be that you are hearing your electric fans, those things do some howlingas well!
RovinOn...........
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LONG LONESOME HIGHWAY
Going down that long lonesome highway,Bound for the mountains and the plains
Michael Parks / Then Came Bronson - 1969
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10-22-2011, 09:55 AM
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#5
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Senior Member
Ford Super Duty Owner Fleetwood Owners Club
Join Date: May 2005
Location: Fernley,NV
Posts: 335
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This time of year it could be werewolves. 
Seriously, if you have a tv antenna, make sure it is not vibrating up there. On my Southwind, that was my howling.
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David F
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10-22-2011, 10:17 AM
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#6
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Senior Member
Vintage RV Owners Club Ford Super Duty Owner
Join Date: Oct 2011
Location: Jasper, Missouri
Posts: 340
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Tire noise is often most apparent at those speeds. If the MH is still "Brand New" it may still be the tires breaking-in, so to speak.
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Tom - Retired OTR 20 years 2 million mile club - 1984 Diamond Maxi
 I love everybody! Even some above ground!
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10-22-2011, 10:43 AM
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#7
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Senior Member
National RV Owners Club Workhorse Chassis Owner
Join Date: Apr 2011
Location: Federal Way, Wa.
Posts: 1,236
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I'll favor the grill---mine did it as well, exactly the same speed and symptoms---that's why we call her Moan-a---the problem was solved by National with some rubber inserts between the "fins" on the grill.
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I do all my own stunts
03 Dolphin LX 6355, Workhorse W22, 8.1 vortec, 04 CR-V, Blue Ox, Brake Pro----Norm, Barb and
Doc(He's a PhD)
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11-08-2011, 10:36 AM
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#8
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Member
Join Date: Dec 2000
Location: Pasco County Florida
Posts: 92
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Do you think filling the tubes with expanding foam would end the humm? Seems better than sand!
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2011 Bounder 35H
2012 Ford Escape Ltd
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11-08-2011, 11:23 AM
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#9
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Senior Member
Fleetwood Owners Club Ford Super Duty Owner
Join Date: Aug 2009
Posts: 3,006
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Quote:
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Originally Posted by Fla2RI
Do you think filling the tubes with expanding foam would end the humm? Seems better than sand!
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FW recommended sand and paid for it while I was still under warranty. I had plastic caps on the tube ends and siliconed them after the sand was put it. That was over two years ago. It works. Don't know about your foam idea nor have I heard of anyone else doing that.
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 2008 35e Bounder F53 V-10 Ford, 2009 HHR LT2 ,SMI stay-n-play duo, TST tpms.
Cliff,Tallulah and Buddy( 13 year old Shih-tzu )
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11-08-2011, 05:39 PM
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#10
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Senior Member
Ford Super Duty Owner Fleetwood Owners Club
Join Date: Sep 2007
Location: Rancho Cordova, California
Posts: 731
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As Cliff stated, sand is the way because of it's specific gravity causing a massive change in the tubing's ability to vibrate at speeds you would attain.
A word to the wise is "nuff."
Steve
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Steve Bernard
2008 Bounder 35E/Ford
2007 Saturn Vue RedLine
Bounders United/Gold Country Roos
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11-08-2011, 06:09 PM
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#11
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Senior Member
Ford Super Duty Owner Fleetwood Owners Club
Join Date: Oct 2010
Posts: 299
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I used 3/8 round doll rods then fill the ends with sealer.
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2009 Fleetwood Bounder 35E
Living the good life USCG
Todd, Cheryl, Allen, Megan & Kayla
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11-25-2011, 07:15 PM
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#12
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Junior Member
Fleetwood Owners Club
Join Date: May 2009
Posts: 9
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I filled the tubes with silicon sealant and that stopped the howling on my 2011 35H. Also found that the electric shade will rattle if fully retracted....leave a bit of space and the rattle stops
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2011 Fleetwood Bounder 35H
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