Internal exhaust rattle. Any advice? - Mustang Evolution

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Old 08-25-2015, 07:25 PM   #1
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Internal exhaust rattle. Any advice?

So after going to multiple shops and getting my car checked multiple times, there is some sort of internal exhaust issue causing a rattle at specific rpm. It is a very weird rattle that occurs frequently while the car is cold, but as it warms up it will sometimes go away. It's a pypes mid muffler dual exhaust, and the shop that installed it welded it shut. Any ideas on how to fix it other than blasting my radio constantly, because this rattle is audible to people outside my car and that bothers me. Since I paid a lot for the exhaust set up. Any advice would be nice.

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Old 08-30-2015, 03:50 PM   #2
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I had a simalar problem when I installed my axle backs..... I tightened the bolts pretty tight and they rattled... I got under there again and really really tightened every thing and the slight rattle I had went away.
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Old 08-30-2015, 05:00 PM   #3
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Crazy I have the same issue with my Ataks I installed. Gonna try the solution above and see what I can do


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Old 08-30-2015, 07:39 PM   #4
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I have tightened as tight as I can. Maybe I need to either get a really strong friend or power tools.

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Old 08-31-2015, 08:12 PM   #5
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Tighter isn't always better. If somethings distorts the clamp and if enough torque is applied can shear the bolts.
If the noise was being caused by an under tightened bolt, you should be able to locate the source with a second person.
Or determine if it's internal to the muffler.
What does "welded it shut" mean?
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Old 09-01-2015, 09:19 AM   #6
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Every piece of the exhaust kit is welded together. They didn't use the clamps included with the kit, so I can't just take it off and look inside.

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Old 09-02-2015, 08:50 AM   #7
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Took mine back to the shop, they got it all sorted out. Apparently with me lowering the car some part of the exhaust was rattling against something underneath the car. Was a pretty quick fix


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Old 09-02-2015, 01:09 PM   #8
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I have stock suspension. That wouldn't be my issue. Someone else told me that it is the hanger arms at the very back of the car touching the body of the car.

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Old 09-02-2015, 02:08 PM   #9
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Here is a thread i just posted? Does this seem like the same? if so lets keep each other posted. BTW I actually overtightened the AB clamp. I ordered a new one because it got bent. the new one is on now so can be overtightened

Another noise thread
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Old 09-02-2015, 02:33 PM   #10
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We're my rattle was coming from I believe is the bolts that hold the hangers to the body on the axle backs.... Not the clamps that connected the over axle pipes to the axle backs...
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Old 09-03-2015, 08:37 AM   #11
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I may need to check those again.

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