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03-03-2021, 07:54 PM
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#1
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Member
Join Date: Apr 2011
Posts: 45
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Clunking/knocking noise
I have a 2011 Fleetwood and since day one new there has been a clunking/knocking noise coming from underneath the front seat area. I know this is a crappy description but anyone have any ideas? I’ve gone underneath and try to rattle things, ridden in the bay behind front wheels and still can’t figure out what it is. 10 years and it hasn’t caused any problems, just annoying. TIA
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03-03-2021, 09:07 PM
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#2
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Senior Member
Newmar Owners Club Spartan Chassis
Join Date: Apr 2015
Location: Dallas, TX area
Posts: 634
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I read a story a long time ago about a guy that was having clunking/banging going on under his seat. It turned out to be a can of soda under the seat and the can was rolling about banging into the seat pedestal. Maybe?
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03-03-2021, 09:25 PM
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#3
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: May 2016
Location: Kamloops, BC, 60 miles from the Center of the Universe according to the Rinpoche, of the SF monks.
Posts: 7,321
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Need more info. Is it on turns, going over bumps, stopping, starting, ????
Maybe there is a spot on the house mounting that wasn't welded. I have seen that before.
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Happy Glamping, Norman & Elna. 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand!
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03-04-2021, 09:01 AM
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#4
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Member
Join Date: Apr 2011
Posts: 45
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It is pretty heavy sounding. Happens at 5+ mph with going over the slightest bumps. Don’t notice it at fwy speeds. At first I thought it was the pull out trays bouncing around but took them out to test drive and didn’t change noise.
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03-04-2021, 09:58 AM
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#5
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Senior Member
Fleetwood Owners Club American Coach Owners Club
Join Date: Mar 2011
Posts: 6,761
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We had an 09 Allegiance with the same type noise under the RF seat. It seems that the welds securing the chassis to the body were missing.
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2014 American Eagle 45T
DD 13, 500 HP
Pulling a Honda CRV
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03-04-2021, 10:04 AM
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#6
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Senior Member
Join Date: Dec 2009
Location: Out there, somewhere
Posts: 9,903
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Discovery,
Since you say it's maybe more noticeable going over bumps etc. at slower speeds, have you by any chance taken a look at your shock bushings, sway bar bushings etc.? I had the same exact noises happening for a while on ours and was puzzled. I looked around quite a bit before finding the problem. ON ours, it was the sway bar link bushings at the frame. Not the ones that the front torsion bar pivots on but, the ones that link that torsion bar to the frame.
They get a tremendous amount of stress on them over the years and they finally just give up the ghost and disintegrate. And the only way to see them is to get under the front end with a flash light and look at ALL the connection points for that torsion/sway bar. One more potential is, a broken support weld. That is, the coach builders often weld in pieced of steel from a sub frame that they've added, to outer steel structural components. And sometimes, those welds break loose and are not easy to find.
Look for rust at a weld. Rust indicates a crack or a full break for the most part. Although not normally loud enough for folks to actually HEAR, a glued on bracket from the structural part to the fiberglass can bang around too when the glue breaks loose. Things like grills, headlight brackets, hood brackets and more are quite often GLUED to the fiberglass insides. And, they break loose quite often. Let us know.
Scott
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2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '20 Honda NC750X DCT
Retired-29.5 yrs, SDFD, Ham - KI6OND
Me, Karla and the Heidi character, (mini Schnauzer)!
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03-19-2021, 01:33 PM
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#7
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Senior Member
Join Date: Nov 2013
Posts: 523
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I have a Tiffin on a Freightliner chassis and we, too, had a seemingly random "clunk" under the front seat.
In my case, it had something to do with worn shock bushings or sway-bar bushings. I can't say which it was, exactly.
I lived with the noise during our first 100 miles or so and then we parked it for about a year while we did renovations and mechanical improvements - including new shocks and a new sway bar.
After those items were replaced, the sound was gone.
Honestly, I had forgotten all about the noise when I replaced the components, otherwise i would have inspected them more carefully when I removed them.
Anyway, I'd look at any wear or play in those areas.
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Full -Time On The Road
2008 Tiffin Allegro Open Road 35QBA
6.7L Cummins ISB Tuned to 300HP
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04-15-2021, 01:00 PM
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#8
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Junior Member
Join Date: Apr 2021
Posts: 1
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Check to see that the front shock is tight, mine doing the same thing, and it was loose
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04-21-2021, 11:00 PM
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#9
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Senior Member
Join Date: Dec 2009
Location: Out there, somewhere
Posts: 9,903
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Well,
Must not be too worried about answers.
Scott
__________________
2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '20 Honda NC750X DCT
Retired-29.5 yrs, SDFD, Ham - KI6OND
Me, Karla and the Heidi character, (mini Schnauzer)!
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