rattle from beneath!!
ok so i need some suggestions here! ive got the rattleing sound that starts when engine is warm and starts at 1200prm and dies off at about 1700rpm...its not the cam phasers bc i have that and know that sound:mad:...this noise is coming from right under the cab...does it in park and when moving...sounds like a heat shield or something but i have been under the truck and bent around the shields that were close to other parts...still rattles!
its hard to explain but just sounds like a metal rattle...i have aftermarket duals with no mufflers but still have stock cats...the exhaust is all solid as a rock! any suggestions would help! thanks in advance guys and gals!!! |
Check the lifting points on the engine up on top. My buddy has a 4.2L and his were rattling whenever he was at about that rpm range. It took us forever to locate.
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i think i have the same problem, but i think its cats.. i have custom exhaust too but stock cats
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i had the same rattling lift points on my 07 v6 too....ill have to check into that....
aidswold-can the cats cause this? maybe something inside the cat? |
well if one of your cats is done. it will rattle when you rev it.. just get someone to rev it. while u are under listening
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yea havent had anyone to help me out with that yet...tried reaching in to push pedal while beside truck but didnt work out to well!!
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Could be a loose baffle in the muffler as well. Try rapping with the wood end of a hammer on the outside of your muffler to see if that's where it's comming from.
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That's what happened to my original exhaust. Had a Flowmaster 50 series muffler on and rattled but only under certain times. Finally figured out a weld on a baffle inside the muffler was broken. A rubber mallet would work too, just nothing metallic. |
no mufflers on the trucks...4 cats and straight back from there....anything else?
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