[dscollins]

Hi i have started to notice a very slight whirring noise which appears to come from the front passenger side of car , ( Automatic) its only noticeable at low speeds increases with RPM ?

[Wgosma]

Not had this issue; trans in neutral and sound goes away would point to drivetrain/driveline issue...hard to say, could be anything from transmission to u-joint, bushing, etc.

Would seem car needs to be put on lift for diagnosis.

[BMWZ4]

Originally Posted by dscollins

Hi i have started to notice a very slight whirring noise which appears to come from the front passenger side of car , its only noticeable when the car is in motion and under drive ( Automatic) if i take the car out of drive whilst moving theirs no whirring noise. Any body had this problem ?

Is the fan running when you hear the noise? My fan (at high speed) makes a whirring sound

[TheCoolX3]

I posted this awhile ago and still have the sound. Good news is that it likely means your trans is not likely to explode. Note my use of "likely"

I suspect it has something with the fluid level in the transmission. I am going to be changing my transmission fluid next week. I will update if it solves my issue or if it doesn't.

https://x3.xbimmers.com/forums/showt...t=transmission

[dat1guy]

Originally Posted by TheCoolX3

I posted this awhile ago and still have the sound. Good news is that it likely means your trans is not likely to explode. Note my use of "likely"

I suspect it has something with the fluid level in the transmission. I am going to be changing my transmission fluid next week. I will update if it solves my issue or if it doesn't.

https://x3.xbimmers.com/forums/showt...t=transmission

I started noticing some new sound maybe like the one described here in the past 3 days. The sound is tied to the engine's RPMs and can only be heard at very low speed.

I changed my transmission oil roughly a month ago at a ZF certified mechanic. Transmission is acting great other than that.

[Oilverland]

Try turning A/C off, and wait a bit and see if it goes away. I get some whirring-like noise when mine is engaged. I can only hear it when driving slowly as other regular noises mask it once doing even city speeds. I ignore the noise. Just did a serpentine belt change and the compressor bearing seemed OK.

[dat1guy]

Originally Posted by Oilverland

Try turning A/C off, and wait a bit and see if it goes away. I get some whirring-like noise when mine is engaged. I can only hear it when driving slowly as other regular noises mask it once doing even city speeds. I ignore the noise. Just did a serpentine belt change and the compressor bearing seemed OK.

that seemed to be it... well the noise stopped even with AC on.

[dscollins]

BMW F25 2.0D SE AUTO, A whirring noise is noticeable with increasing & decreasing RPM whilst under drive and at standstill. This is an update to my previous posting regarding this issue, i have had longer to observe this problem. any advice would be greatly appreciated

[dscollins]

Originally Posted by dat1guy

I started noticing some new sound maybe like the one described here in the past 3 days. The sound is tied to the engine's RPMs and can only be heard at very low speed.

I changed my transmission oil roughly a month ago at a ZF certified mechanic. Transmission is acting great other than that.

How much fluid does it take to fill, did you change the plastic pan ?