Whining noise linked to RPM

**$w!ft** · 18-09-2013, 12:22 AM

Hi guys,

Can anyone confirm this noise on their car?

It was not apparent a few days ago on mine, maybe something linked to the recent cold weather kicked it in?

It is a whining noise, similar to a pump, linked to the engine RPM, (doesn't matter if in gear or not)

Short video, you have to listen carefully but you can hear it whining up and down

shane@mbtech · 18-09-2013, 12:30 AM

Is radio on?

Sounds like interference, heard it on a few cars before now with bad radio wiring install.

Is it in the cabin?

philo · 18-09-2013, 09:22 AM

Altenator it's sounds to me,only a guess

philo · 18-09-2013, 09:25 AM

Quote:

Originally Posted by lawsy

Is radio on?

Sounds like interference, heard it on a few cars before now with bad radio wiring install.

Is it in the cabin?

Same as I thought,needs suppressor in line,had this lots with old cars with upgraded hifi over the years,alternator noise through stereo.....if I recall

**shimmy** · 18-09-2013, 10:04 AM

kep an eye out for the alt red light....then you have circa 70 miles to dead battery

**$w!ft** · 19-09-2013, 02:25 AM

Quote:

Originally Posted by philo

Same as I thought,needs suppressor in line,had this lots with old cars with upgraded hifi over the years,alternator noise through stereo.....if I recall

no radio on, no a/c on.

I do have aftermarket hifi speakers with subwoofer and amps. Could be background coming through as you said philo.

It didn't do it today. Very strange. Replaced the alternator about a year and a half ago I think... would be surprised for it to go out again!

**$w!ft** · 25-11-2013, 12:33 AM

well well well.... Alternator just died on me today. Left me standing on chelsea embankment for almost 2 hours. Lucky it didn't happen on the bridge. Guess the prognosis was correct!

I all of a sudden got red battery light and 5 mins later it was gone.

Wonder what courtesy car ill get.

**glendog74** · 25-11-2013, 09:10 PM

Quote:

Originally Posted by $w!ft

well well well.... Alternator just died on me today. Left me standing on chelsea embankment for almost 2 hours. Lucky it didn't happen on the bridge. Guess the prognosis was correct!

I all of a sudden got red battery light and 5 mins later it was gone.

Wonder what courtesy car ill get.

Doh! I remember when mine let go - pants!

**shimmy** · 25-11-2013, 09:20 PM

Quote:

Originally Posted by glendog74

Doh! I remember when mine let go - pants!

Luckily mine let go when an M tech was driving it after dong some warranty work, apparently.

giraffe · 25-11-2013, 11:35 PM

Quote:

Originally Posted by shimmy

Luckily mine let go when an M tech was driving it after dong some warranty work, apparently.

18-09-2013, 12:22 AM	#1
$w!ft S5 - Full Throttle Join Date: Oct 2009 Location: London (W1) Posts: 309 Casino cash: $3311	Whining noise linked to RPM Hi guys, Can anyone confirm this noise on their car? It was not apparent a few days ago on mine, maybe something linked to the recent cold weather kicked it in? It is a whining noise, similar to a pump, linked to the engine RPM, (doesn't matter if in gear or not) Short video, you have to listen carefully but you can hear it whining up and down __________________

18-09-2013, 10:04 AM	#5
shimmy CSL Register Uber-poster! Join Date: Apr 2008 Location: Uk Posts: 14,646 Casino cash: $43909	kep an eye out for the alt red light....then you have circa 70 miles to dead battery __________________ .

25-11-2013, 12:33 AM	#7
$w!ft S5 - Full Throttle Join Date: Oct 2009 Location: London (W1) Posts: 309 Casino cash: $3311	well well well.... Alternator just died on me today. Left me standing on chelsea embankment for almost 2 hours. Lucky it didn't happen on the bridge. Guess the prognosis was correct! I all of a sudden got red battery light and 5 mins later it was gone. Wonder what courtesy car ill get. __________________

18-09-2013, 12:30 AM	#2
shane@mbtech CSL Register Uber-poster! Join Date: Feb 2009 Location: warrington Posts: 5,419 Casino cash: $19783	Is radio on? Sounds like interference, heard it on a few cars before now with bad radio wiring install. Is it in the cabin?

18-09-2013, 09:22 AM	#3
philo S3 - On the open road Join Date: Oct 2012 Posts: 112 Casino cash: $2593	Altenator it's sounds to me,only a guess