Vibration when upshifting?

jclaib7 · 12-20-2013, 07:02 PM

When I rev up to roughly 5000rpm and up shift (paddle shifters) in 2nd - 4th gears, there is a quick vibration. It's annoying.

My first though was a heat shield or something.

Any ideas?

Overpar56 · 12-20-2013, 08:25 PM

Is it repeatable every time?

jclaib7 · 12-20-2013, 09:15 PM

Quote:

Originally Posted by Overpar56

Is it repeatable every time?

For the most part yes.

owen2001 · 12-21-2013, 09:55 AM

Quote:

Originally Posted by jclaib7

When I rev up to roughly 5000rpm and up shift (paddle shifters) in 2nd - 4th gears, there is a quick vibration. It's annoying. Any ideas?

I mentioned in another thread that I have something very similar. When I am upshifting somewhat aggressively, I get a repeatable buzzing/vibration in every gear around 3000rpm. I agree - it is annoying.

I cannot pinpoint where the buzzing is coming from and it only last for 1 or 2 seconds until I shift. Sometimes it sounds like it's behind me and other times it sounds like it's in front of me and near the passenger side. I have not attempted to get someone else in the car to help me nail it down yet, mostly because I just haven't had the chance.

For me, it's happened since mile 1 of the new car. I attribute it to the PE causing it at certain frequencies or something like that, but I don't know for certain.

jclaib7 · 12-21-2013, 03:03 PM

Quote:

Originally Posted by owen2001

I mentioned in another thread that I have something very similar. When I am upshifting somewhat aggressively, I get a repeatable buzzing/vibration in every gear around 3000rpm. I agree - it is annoying.

I cannot pinpoint where the buzzing is coming from and it only last for 1 or 2 seconds until I shift. Sometimes it sounds like it's behind me and other times it sounds like it's in front of me and near the passenger side. I have not attempted to get someone else in the car to help me nail it down yet, mostly because I just haven't had the chance.

For me, it's happened since mile 1 of the new car. I attribute it to the PE causing it at certain frequencies or something like that, but I don't know for certain.

I have the PE as well. Can you hear it with the windows down? Everything sounds normal with windows down, granted there is wind noise. It's only noticeable with windows up.

Wakka · 12-21-2013, 05:19 PM

my PE like... pops and gurgles a little bit when i upshift... but thats about it. Sounds really good actually (Manual)

Dackelone · 12-21-2013, 05:40 PM

I have a PE on my manual 135i and it doesn't make this kind of rattle. Only nice popping and gurgling type sounds.

OP - since you can repeat the noise... just show it to your SA or better yet the tech who will be working on your car. I am sure they could find the cause since you can repeat the noise.

I would look under your car at the exhaust. It might be something as simple as a stretched or broken exhaust hanger. I would also look at the exhaust for any shinny marks where it could be making contact with the body of the car. The rear X-brace would be my best guess where it could contact the car's body/chassis.

The clamps that join the y-pipe to the mids could also be loose. Tighten them to 45Nm.

DIY installing N55 mid pipes on a N54...
http://www.1addicts.com/forums/showt...=797160&page=5

You might also check the engine tray. There is a heat shield built into it that comes awfully close to down pipes/cats. You could be making contact here - especially if someone botched reinstalling the under tray after an oil change.

Dack

jclaib7 · 12-22-2013, 09:33 AM

That is good info. Thanks for the help.

12-20-2013, 07:02 PM	#1
jclaib7 First Lieutenant 142 Rep 324 Posts Drives: 2018 M2 Black Shadow Edition Join Date: Jul 2013 Location: United States, Beverly Ma. iTrader: (2)	Vibration when upshifting? When I rev up to roughly 5000rpm and up shift (paddle shifters) in 2nd - 4th gears, there is a quick vibration. It's annoying. My first though was a heat shield or something. Any ideas? __________________ 2018 M2 Black Shadow Edition
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12-20-2013, 08:25 PM	#2
Overpar56 Proud AARP member in good standing 28 Rep 635 Posts Drives: Me nuts Join Date: Oct 2013 Location: Skyline, Chile iTrader: (0)	Is it repeatable every time? __________________ 2012 135i DCT, Lemans Blue/black leather, PPK1, PE, Stoptech Sport rotors and Sport pads, unhealthy crackles and burbles and an aging demonic driver.
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12-21-2013, 05:40 PM	#7
Dackelone European Editor 10539 Rep 22,992 Posts Drives: N54 e82 Join Date: Feb 2010 Location: Bayern, Germany iTrader: (1)	I have a PE on my manual 135i and it doesn't make this kind of rattle. Only nice popping and gurgling type sounds. OP - since you can repeat the noise... just show it to your SA or better yet the tech who will be working on your car. I am sure they could find the cause since you can repeat the noise. I would look under your car at the exhaust. It might be something as simple as a stretched or broken exhaust hanger. I would also look at the exhaust for any shinny marks where it could be making contact with the body of the car. The rear X-brace would be my best guess where it could contact the car's body/chassis. The clamps that join the y-pipe to the mids could also be loose. Tighten them to 45Nm. DIY installing N55 mid pipes on a N54... http://www.1addicts.com/forums/showt...=797160&page=5 You might also check the engine tray. There is a heat shield built into it that comes awfully close to down pipes/cats. You could be making contact here - especially if someone botched reinstalling the under tray after an oil change. Dack __________________ Dackel's European Delivery Museum Guide
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12-22-2013, 09:33 AM	#8
jclaib7 First Lieutenant 142 Rep 324 Posts Drives: 2018 M2 Black Shadow Edition Join Date: Jul 2013 Location: United States, Beverly Ma. iTrader: (2)	That is good info. Thanks for the help. __________________ 2018 M2 Black Shadow Edition
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