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Old 12-20-2014, 12:13 PM   #1
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Weird Noise??

Hey guys I'm driving right now and I was driving on the highway, and it sounded like something almost came undone and it sounded like there's was a high-pitched drilling noise when I was on the highway so I pull off the highway and checked underneath, I checked my exhaust manifold and I checked my muffler but I can't find out what's making this noise, only when I give it gas and when I decelerate I can hear an extra pitch when I'm driving on a normal road, as I'm driving on my work right now it sounds like there's another hole in my muffler and it sounds like a motorcycle revving in addition to my normal exhaust sound. It passed my eye inspection but I won't know until I get home. Maybe a loose heat shield??? I would really appreciate any thoughts as I will know where to start checking once I get home.

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Nick


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Old 12-20-2014, 12:50 PM   #2
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High pitched? I can only think that maybe it's a belt rubbing or a bearing going bad. Of course, I can't hear the sound but I thought I'd throw that out there.
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Old 12-20-2014, 12:52 PM   #3
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Weird Noise??

Important note, the order thing that happened before all this was I was accelerating from 80 to maybe 85 but there was a moment when I wasn't getting any response, I didn't push it once it stopped responding. When I pulled off I checked everywhere and seemed ok, turned it off and back on, it's just the added noise is my concern


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---------- Post added at 01:52 PM ---------- Previous post was at 01:51 PM ----------

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High pitched? I can only think that maybe it's a belt rubbing or a bearing going bad. Of course, I can't hear the sound but I thought I'd throw that out there.

It could be, it's definitely from the back end, I checked the engine bay and didn't see anything out of place


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Old 12-20-2014, 07:02 PM   #4
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The sound only occurs when I accelerate from 20mph+. I'm thinking it might either be a cracked pinion coil or a problem with the rear differential. I can rev the hell out of it from neutral and it still sounds beautiful, it's only when I am moving at 20mph+ and apply the accelerator that it can be heard. When I slow down I hear the back end make a grogelly almost clunky sound...


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Old 12-20-2014, 07:24 PM   #5
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Have you ever cleaned the rear end or changed the fluid ?
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Old 12-20-2014, 07:25 PM   #6
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Check drive shaft, the oem shafts aren't that well balanced.
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Old 12-21-2014, 09:39 AM   #7
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Thought your alternator might have went kaput at first. Mine did and it sounded weird as well when I gave it gas


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Old 12-21-2014, 10:51 AM   #8
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Have you ever cleaned the rear end or changed the fluid ?

I have not cleaned it recently, it has been a couple months since I checked my transmission fluid.


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Old 12-21-2014, 10:55 AM   #9
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Thought your alternator might have went kaput at first. Mine did and it sounded weird as well when I gave it gas


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It's definitely something in the back, but yeah it sounds like it's hurting when I accelerate


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Old 12-21-2014, 12:43 PM   #10
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Thought your alternator might have went kaput at first. Mine did and it sounded weird as well when I gave it gas


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It's definitely something in the back, but yeah it sounds like it's hurting when I accelerate


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Old 12-21-2014, 04:05 PM   #11
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If it happens to be the rear end I still have my 7.5 drive shaft and sway bar w/ arms trying to get rid of but your probably not from cali.
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Old 12-21-2014, 04:10 PM   #12
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If it happens to be the rear end I still have my 7.5 drive shaft and sway bar w/ arms trying to get rid of but your probably not from cali.

I wish, I'm from the cold wonderland of Michigan lol


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Old 12-21-2014, 04:18 PM   #13
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Damn I only had a little over 16k on it too, on a 2010.
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Old 12-22-2014, 06:05 PM   #14
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Turns out it's the Pinion Bearing, a few months ago the seal was leaking and they only told me to keep an eye on it and it was an urgent fix. From what they said I can drive it still up until next week once the mechanic is in and he can go through and fix it. I am not sure if it's the seal or the bearing that needs to be replaced. If it's the seal then it should be pretty cheap to fix, but if it's the bearing then it will cost a bit more, and I'm not sure if driving it for the next week will wear the bearing down to the point where it will have to be replaced if it's only a bad seal.


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Old 12-22-2014, 07:12 PM   #15
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Hope it's the seal brotha, may the mustang gods be on your side
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Old 12-27-2014, 04:24 PM   #16
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Got a quote from a Ring & Pinion Specialist for just under $500, will see what my friend would charge on labour if his shop's not too busy.


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Old 12-27-2014, 05:35 PM   #17
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Damn wish you were in Cali would sell my rear with DS and sway bar w/ arms for $400. About 16,400 miles on it from my 2010.
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Old 12-27-2014, 05:39 PM   #18
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Ring and pinion I think AM was having a sale on V6.
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