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  #1  
Old 03-11-2010, 01:16 PM
90fordranger 90fordranger is offline
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Join Date: Feb 2010
Posts: 685
Question rattle sound from under truck? help

every time i hit a bump i hear a rattle sound coming from under the truck.
hoping its just some gravel some were, just had it in the mechanic couple weeks ago they said nothing is wrong with the truck.
now ive been hearing a rattle sound under the truck when i hit a bump.
just did a lot of mudding and off roading recently, i think theres some gravel some were. not sure though.
anyone have any thoughts, ill appriciate them.
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  #2  
Old 03-11-2010, 01:30 PM
trcothorn trcothorn is offline
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Default Re: rattle sound from under truck? help

i know this probably isnt your problem but i had a rattle sound when i went over any kind of bumps and i didnt know what it was. when i put on my new exhaust it went away so i guess the exhaust pipes were rattling
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  #3  
Old 03-11-2010, 01:32 PM
90fordranger 90fordranger is offline
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Default Re: rattle sound from under truck? help

it might be, i have no idea what it could be. thanks.
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  #4  
Old 03-11-2010, 01:38 PM
dos0711 dos0711 is offline
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Default Re: rattle sound from under truck? help

Could be either your muffler baffles or catalytic converter ceramic is cracked...either will rattle.
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Old 03-11-2010, 09:11 PM
Magnus Magnus is offline
2009 Ranger Sport 4X4
 
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Default Re: rattle sound from under truck? help

Sounds like there is gravel somewhere or it could be the exhaust rattling. What I would do is when the truck is not in motion like on your driveway I would jounce all four corners and see if the noise appears close the corners. Then that way you can trouble shoot the problem a bit faster. Works better when some jounces and you are underneith listening for the noise.
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  #6  
Old 03-11-2010, 09:32 PM
Daedalus Daedalus is offline
Ford Motor Company
 
Join Date: Jan 2010
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Default Re: rattle sound from under truck? help

Somewhat related, when i first shift into 1st or 2nd with the windows down I can hear a distinct rattle from below the firewall. I'll knock on the cat tomorrow. But it seems all signs point to a bad cat?... Right?
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  #7  
Old 03-12-2010, 03:12 PM
90fordranger 90fordranger is offline
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Default Re: rattle sound from under truck? help

not sure what it could be, but it is coming from under the truck in the area wear the cats are, maybe ill nock on them tonight, see if thats it.
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  #8  
Old 03-12-2010, 03:27 PM
AngerRanger AngerRanger is offline
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Default Re: rattle sound from under truck? help

my rear bumber was a tad loose and i heard a rattle for a while till i just out of curosty seen it and fixed it check that out it may apear to be tight when you wiggle it but when you go over a bump it still rattles hope i help
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  #9  
Old 03-12-2010, 07:48 PM
RangerJ RangerJ is offline
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Default Re: rattle sound from under truck? help

I had a rattle sound under mine also it was a loose heat shield. I finished tearing it off. Problem solved
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  #10  
Old 03-12-2010, 11:09 PM
90fordranger 90fordranger is offline
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Default Re: rattle sound from under truck? help

thanks guys. =]
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