strange noise when accelerating over 45mph??
Technical Article Contributor
Joined: Oct 2005
Posts: 25,641
Likes: 19
From: MI
Too bad I have a full custom exhaust from the headers down..no warranty for me..As for the oil 5w-40 and like I said its overdue so maybe thats it.
No heat shield, already ripped both off in the past and I banged all over the exhaust with no rattling..so ruling that out.
Totally baffled, and this started right after my serp belt was replaced and the muffler was replaced..bringing it in tommorrow to the last guy who worked on it. PIA!
Thanks for all the attempts at diagnosing this, nice to be able to bounce these things off other people before getting "raked over the coals" at the mech shop..
No heat shield, already ripped both off in the past and I banged all over the exhaust with no rattling..so ruling that out.
Totally baffled, and this started right after my serp belt was replaced and the muffler was replaced..bringing it in tommorrow to the last guy who worked on it. PIA!
Thanks for all the attempts at diagnosing this, nice to be able to bounce these things off other people before getting "raked over the coals" at the mech shop..
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Yea, you don't want to screw around with the viscosity to much and the oil filters on these engines, this HAS proven detrimentle in the past. Once damage is done , it can't be reversed, - IF there is indeed damage at this point.
Sticking with the recommended is best all around.
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But yea, other than that - Idunno.
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Member
Joined: Dec 2008
Posts: 80
Likes: 0
From: RI
mech tells me that its a plastic piece that isloose on my step bar..didn't really buy it but had no choice. Took it home and secured the loose plastic piece..guess what? noise is still there.
This is definetely coming from under my truck/engine. Anyway this could be from my transmission? I checked fluid and the level is good, however I did notice moisture on the underside of the tranny and a small drip..
This is definetely coming from under my truck/engine. Anyway this could be from my transmission? I checked fluid and the level is good, however I did notice moisture on the underside of the tranny and a small drip..
Junior Member
Joined: Jul 2004
Posts: 9
Likes: 0
From: Iowa
I just had this done on mine. Weird thing is, it was the pinion bearing in the rear end. When I was able to get the sound going, I would stick my head in the back seat (06 Supercrew, 3.55LS diff) and I could def. hear it a lot better. Bad thing is, it is $700-1000 to fix. Mine was under warranty, the second time in and they said the first dealer tourqed down somthing too tight. (thg first time was for clutch packs at 16k)
Junior Member
Joined: Aug 2014
Posts: 1
Likes: 0
had same problem on my 2009 fx4
My truck exact same issue. The fix was the actuator on the 4x4 went bad and/ or the vacuum line had a crack in it. I replaced everything so I couldn't pin point it. I had a mechanic explain that the vacuum pressure drops at 45 and the hubs weren't all the way disengaged causing the noise.
Junior Member
Joined: Jan 2019
Posts: 2
Likes: 0
Do
I have been getting a rattling/metal clanging noise (excuse the weak description) when I am accelerating over 45mph. when I let off the gas, the noise stops. This started last week as very intermitent and now is very regular
I currently need new u-joints but I am not sure if this is associated with it. No vibration either, just a rattling/clanging noise..any ideas?
I currently need new u-joints but I am not sure if this is associated with it. No vibration either, just a rattling/clanging noise..any ideas?
Junior Member
Joined: Jan 2019
Posts: 2
Likes: 0
Yeah, trying to test my luck in this one. Thanks, man!