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  #13  
Old 11-03-2010, 07:56 PM
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Re: Strange rattling noise from engine compartment

Quote:
Originally Posted by Marlin View Post
So many things it could be, but most likely a loose heat shield.
This is what I would think too. My bolts rusted off on passenger side before 50K.
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  #14  
Old 11-03-2010, 08:43 PM
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Re: Strange rattling noise from engine compartment

OK so I test drove it again today, it rattles no matter if I am driving straight or making a tight turn, so I dont think its the CV joints.

Irf I had a feeling it was the K&N, but I checked it and everything is tight! Im not sure what I am missing. Plus it sounds like it is coming more from the driver side. I am gonna get under there tomorrow and check the heat shields. Erggg its annoying!!
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Old 12-01-2010, 12:07 PM
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Re: Strange rattling noise from engine compartment

you ever find out what it was???
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  #16  
Old 12-01-2010, 04:41 PM
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Re: Strange rattling noise from engine compartment

Its unfourtunate but there is so much resonance and vibration at any given rpm it could be ANYTHING...

Have you seen the mythbusters where they put like a 7lb weight mounted to a ram on a bridge and they were able to tune in a frequency that made the entire bridge vibrate.

If it has not been figured out yet your best bet is to do what your doing, maybe get a co-pilot that can help pinpoint what area the noise is coming from then get into that area and make sure everything is tight.
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Old 12-02-2010, 02:38 AM
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Re: Strange rattling noise from engine compartment

I had a similar noise on my 07 with the 3.7 it ended up being the waterpump on its last legs
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