everyone has rattle problems with the 05+ mustang. just turn your music up. Its a mustang, its not gonna be perfect

 

Yes I understand every mustang has certain rattles, but this is not a "normal" rattle. This is a metallic rattle, almost a grinding, that does NOT sound good. I do not want to wait until the warranty is up and then see I have permanent damage. I paid good money for this car, there is NO reason I should settle for or deal with such a loud, annoying, rattle that people outside the car can hear when I accelerate and think, "wow, what a piece of crap, that idiot can't even afford to fix his new car" etc. Frankly, it's embarrassing.

 

please keep me updated!!!

 

I have the same problem. I believe it is in the mufflers. Could be the clamp. I took my aftermarket ones off and put the stockers back on and it was gone. So it is either something internally in the muffler or the clamp because the clamps tighten up way before the pipes are ever tightly clamped on. But my car has the exact same symptoms that you described above wheneever I have my aftermarket mufflers on. Hope that helps.

 

Nope cant be cause i have stingers and different clamps altogether. Sorry to burst your bubble.

 

i've got this same noise. only when the engine is cold. once it warms up the noise goes away. it won't make the noise if i slowly accelerate, but if i even moderately accelerate it makes the rattle noise. first thought was a heatshield but those all seem tight.

 

Then I'm not really sure. I know I hear the noise at 3k rpm's on a cold start for about 2 minutes of initial driving. I assumed it was the mufflers.

 

i had a rattle at around 1500-2000 rpms. prob a totally different sound from urs, but it came from a broken or loose "trans cross brace". Maybe that would help. good luck

 

So, I FINALLY got the problem fixed! My normal Ford dealership was closed, so I had to take it to Woodfield Ford in Schaumburg, IL. Luckily, they had seen the problem before - and they're trying to get Ford to issue a TSB about this as it is common. So, here is the solution - and if anyone else has a problem, tell them to call Woodfield Ford in IL - 847 882 5031 - they've fixed the problem before, and did it again with me!

EDIT: the problem was the spacer plate between engine and transmission contacting the back of the engine - print the following out and give it to your dealer if need be!

[IMG]local://upfiles/44457/50CF3B92AD2F47B29EA2C9419A316316.jpg[/IMG]

 

read my tech report below - it's probably the spacer between engine and trans, like it has been for so many of us already...