01-03-2019, 06:33 PM | #1 |
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bad rattle coming from exhaust.
So i finally picked up a 2015 m235i xdrive.
It is in very very good condition and got it for a very good price. although after having it for 3 days now I've noticed its making a very loud rattle from the left pipe on the exhaust. It has the m performance exhaust on it and after taking a look under the car i noticed a wire that is just tapped up and there is no electronic piece hooked to the exhaust. Which I'm guessing goes to the electric dump in the car. I'm wondering if the dump isn't hooked up could this cause the plate inside the exhaust to rattle because it's not getting any power to the dump to hold it in place or could it actually be busted? thanks for any help/pointers! |
01-03-2019, 07:38 PM | #2 | |
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01-03-2019, 07:41 PM | #3 | ||
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01-07-2019, 09:59 AM | #5 |
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01-22-2019, 01:51 PM | #6 |
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Hi, I had the same problem on my 2014 228, from my understanding the dealer will tell you to replace the muffler. At least they did for my nonMPE exhaust. I know you can also do a valve delete but I don't know the process for it, if out of warranty it is a much cheaper option.
I had one dealership say it was covered under CPO due to it making a noise, while the other dealer did not believe it should be covered under CPO. I would call around and ask if you want to go the dealer route. I think it is a pretty common problem. I see you pretty much already came to this conclusion but just wanted to share my experience as well. Good luck! |
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01-22-2019, 01:57 PM | #7 | ||
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Yes so i am dealing with the old owner to get the cpo warranty transferred into my named then I'll bring it in and have it looked at. but for the mean time i took a piece of welding rod and wrapped the the valve open which holds it still. fixed the super annoying rattle for now until i have the cpo warranty transferred over to see if bmw will replace the parts. Also thank you for the insight! |
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01-23-2019, 03:53 PM | #9 |
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Does the 2016 M235i (F23) exhaust have a valve that give it the dual outlet in Sport and sport + mode?
I cannot find anything in my owners manual. It is stock as far as I can tell. Greg |
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01-23-2019, 03:55 PM | #10 |
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I'm not sure myself. Mine has the M sport exhaust. and if you look inside the left pip you can see the valve.
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09-02-2019, 03:04 PM | #11 |
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Look at this thread...
dreadful exhaust flap rattle . https://r.tapatalk.com/shareLink?sha...8;share_type=t |
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09-12-2019, 04:23 PM | #12 | |
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09-21-2019, 06:00 PM | #13 | |
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I removed the spring that connects motor to valve, then ended up tack welding the valve in the open position. I tried JB weld a couple times at first, but it vibrated loose each time and made a racket. I welded it in a way where I can break it off later and return to normal function if needed. |
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