transmission knocking/popping sound? - BMW 3-Series (E90 E92) Forum

Chipedy · 05-21-2012, 04:40 PM

I posted this on the N54 forum and have had no responses. Hopefully posting it here I can get some information from fellow xi drivers.

I'm having an issue where if I don't shift very smoothly or I let off the clutch too fast, I get a popping/knocking sound that sounds like its coming from the transmission.

I drive an '08 xi 6MT. When I shift smoothly, nothing happens. I only hear it on those jerky every once in a while sloppy shifts. I just want to know if this is normal. I'm still under warranty through next month, and I'm trying to avoid taking it in for them to tell me theres no issues or that it's normal.

ExpensiveTaste · 05-21-2012, 04:51 PM

Quote:

Originally Posted by Chipedy

I posted this on the N54 forum and have had no responses. Hopefully posting it here I can get some information from fellow xi drivers.

I'm having an issue where if I don't shift very smoothly or I let off the clutch too fast, I get a popping/knocking sound that sounds like its coming from the transmission.

I drive an '08 xi 6MT. When I shift smoothly, nothing happens. I only hear it on those jerky every once in a while sloppy shifts. I just want to know if this is normal. I'm still under warranty through next month, and I'm trying to avoid taking it in for them to tell me theres no issues or that it's normal.

I would start by looking for play in driveline connections starting with the driveshaft, then going to the differentials then the cv axles...

335xi Kevo · 05-21-2012, 07:21 PM

Take it in your under warranty, if you take it in prior to the warranty coming up you may get a good faith fix, since you attempted to address the issue.

Hell I took mine in for a tick, ended up being the purge valves.

scooby9 · 05-31-2012, 01:26 AM

I get that noise too if I don't handle the clutch smoothly at low speeds i.e. 1-2 shifts. Quite noticeable in my parkade when windows are rolled down. It's been like that ever since I bought the car in 07 and I just mitigate it by shifting/clutching as smoothly as possible.

Chipedy · 06-03-2012, 08:46 PM

Yea, I just cant used to this damn CDV. I'm going to get the modifed CDV since I've alwaysed driven a manual and it makes shifting really weird and uncomfortable. It's not what I'm used to..

05-21-2012, 04:40 PM	#1
Chipedy Enlisted Member Drives: 2008 335xi Join Date: Apr 2012 Location: Virginia Posts: 35 iTrader: (0)	transmission knocking/popping sound? I posted this on the N54 forum and have had no responses. Hopefully posting it here I can get some information from fellow xi drivers. I'm having an issue where if I don't shift very smoothly or I let off the clutch too fast, I get a popping/knocking sound that sounds like its coming from the transmission. I drive an '08 xi 6MT. When I shift smoothly, nothing happens. I only hear it on those jerky every once in a while sloppy shifts. I just want to know if this is normal. I'm still under warranty through next month, and I'm trying to avoid taking it in for them to tell me theres no issues or that it's normal.
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05-21-2012, 07:21 PM	#3
335xi Kevo First Lieutenant Drives: 2008 335xi Join Date: Jan 2012 Location: CT Posts: 368 iTrader: (2)	Take it in your under warranty, if you take it in prior to the warranty coming up you may get a good faith fix, since you attempted to address the issue. Hell I took mine in for a tick, ended up being the purge valves. __________________ 08' 335xi 6MT Space Metallic Grey Premium, Nav, Cold weather, Sport Procede//PWM Meth//VRSF XI Downpipe//Forge DV//DCI//KW V1//SCOOPS//ETS FMIC//ECS GEOMET ROTORS//HAWK//CDV//PERFORMANCE SPOILER//CSL//

05-31-2012, 01:26 AM	#4
scooby9 Major Drives: 2007 E90 BMW 335xi Join Date: Jul 2007 Location: Calgary, Alberta, Canada Posts: 1,098 iTrader: (5)	I get that noise too if I don't handle the clutch smoothly at low speeds i.e. 1-2 shifts. Quite noticeable in my parkade when windows are rolled down. It's been like that ever since I bought the car in 07 and I just mitigate it by shifting/clutching as smoothly as possible. __________________ *2007 BMW 335xi 6MT TiAg* Part out thread: http://www.e90post.com/forums/showthread.php?t=837695

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06-03-2012, 08:46 PM	#5
Chipedy Enlisted Member Drives: 2008 335xi Join Date: Apr 2012 Location: Virginia Posts: 35 iTrader: (0)	Yea, I just cant used to this damn CDV. I'm going to get the modifed CDV since I've alwaysed driven a manual and it makes shifting really weird and uncomfortable. It's not what I'm used to..