V50 Engine 2.0D : - A slight whine/humming noise

blacklab · Nov 12th, 2011, 19:58

Just noticed today my V50 2005 2.0D is making this whine/humming noise from the engine, that's how I can only describe it, sorry.

It only happens when revs are applied as on tick over it's not there. You can here it whilst driving, it's not an unbearable noise.

Had a listen with the bonnet up and its not coming from the alternator, it's just a strange noise!

Just wondered if you guys have ever had this?

Any ideas? Thanks.

DavieC · Nov 13th, 2011, 20:24

Mine was making exactly this noise until two days ago, when the alternator blew up (well, judging by the smoke and the burning smell it must have done).

benr7310 · Nov 14th, 2011, 00:34

hi blacklab,

would you be able to record a video of the sound your describing and either youtube it or photobucket it and share the link?
might help diagnosis

blacklab · Nov 14th, 2011, 19:13

DavieC, how long did you have the noise for out of interest? Can't hear a noise coming from the alternator when the bonnet's up.
You know when you hear older diesel cars turbo whistle, well it's not exactly like that, but if you can imagine a quieter version of this noise.

Car goes a treat otherwise.

benr, hadn't thought about doing that?! Ta

DavieC · Nov 14th, 2011, 19:55

I couldn't place the noise for a while, but I could hear it getting louder with engine revs. I had someone lightly apply the throttle whilst the bonnet was open and it was clearly coming from the alternator. Stupidly I thought I'll sort it after christmas unil I was 15 miles from home and I got the power system service urgent and batter warning lights on the dash.

The noise is similar to the turbo noise, however on my car this can only really be heard with the engine loaded and moving, the alternator whining however could be heard with the car idling and was a good bit louder.

I got the car back today, £300 for a new alternator fitted, so fairly happy.

blacklab · Nov 14th, 2011, 20:11

Thanks for the speedy reply.

Interesting bit is there is no noise when on tick over but can be heard when engine is under load or revs applied when stopped.

Did you go for the 150a alternator as mine has this but it's a 2005 so I guess it got replaced before I had it. I gather they used to be 120a? No doubt someone will advise on this.

DavieC · Nov 14th, 2011, 22:04

Mines a 2006 S40 2.0D. It had a 150a alternator.

Guru · Nov 14th, 2011, 22:27

Quote:

Originally Posted by blacklab

Interesting bit is there is no noise when on tick over but can be heard when engine is under load or revs applied when stopped.

High pressure fuel pump? just a thought...

blacklab · Nov 14th, 2011, 22:34

Now that's just expensive! Lol

I guess I'll just keep using it and see what happens I reckon?!
Will keep you posted................

blacklab · Nov 17th, 2011, 16:54

Update..Called in to the indi today who says that the noise, like davieC said, is from the alternator. So I'm going to take my chances and see how long it lasts!

Nov 12th, 2011, 19:58	#1
blacklab Senior Member Last Online: Jan 19th, 2024 19:56 Join Date: Nov 2009 Location: Swansea	A slight whine/humming noise Just noticed today my V50 2005 2.0D is making this whine/humming noise from the engine, that's how I can only describe it, sorry. It only happens when revs are applied as on tick over it's not there. You can here it whilst driving, it's not an unbearable noise. Had a listen with the bonnet up and its not coming from the alternator, it's just a strange noise! Just wondered if you guys have ever had this? Any ideas? Thanks.

Nov 14th, 2011, 19:55	#5
DavieC Member Last Online: Jan 11th, 2023 12:55 Join Date: Jun 2006 Location: Forres	I couldn't place the noise for a while, but I could hear it getting louder with engine revs. I had someone lightly apply the throttle whilst the bonnet was open and it was clearly coming from the alternator. Stupidly I thought I'll sort it after christmas unil I was 15 miles from home and I got the power system service urgent and batter warning lights on the dash. The noise is similar to the turbo noise, however on my car this can only really be heard with the engine loaded and moving, the alternator whining however could be heard with the car idling and was a good bit louder. I got the car back today, £300 for a new alternator fitted, so fairly happy. Last edited by DavieC; Nov 14th, 2011 at 20:06.

Nov 13th, 2011, 20:24	#2
DavieC Member Last Online: Jan 11th, 2023 12:55 Join Date: Jun 2006 Location: Forres	Mine was making exactly this noise until two days ago, when the alternator blew up (well, judging by the smoke and the burning smell it must have done).

Nov 14th, 2011, 00:34	#3
benr7310 Master Member Last Online: Dec 29th, 2023 17:48 Join Date: Sep 2011 Location: Thurrock	hi blacklab, would you be able to record a video of the sound your describing and either youtube it or photobucket it and share the link? might help diagnosis

Nov 14th, 2011, 19:13	#4
blacklab Senior Member Last Online: Jan 19th, 2024 19:56 Join Date: Nov 2009 Location: Swansea	DavieC, how long did you have the noise for out of interest? Can't hear a noise coming from the alternator when the bonnet's up. You know when you hear older diesel cars turbo whistle, well it's not exactly like that, but if you can imagine a quieter version of this noise. Car goes a treat otherwise. benr, hadn't thought about doing that?! Ta

Nov 14th, 2011, 20:11	#6
blacklab Senior Member Last Online: Jan 19th, 2024 19:56 Join Date: Nov 2009 Location: Swansea	Thanks for the speedy reply. Interesting bit is there is no noise when on tick over but can be heard when engine is under load or revs applied when stopped. Did you go for the 150a alternator as mine has this but it's a 2005 so I guess it got replaced before I had it. I gather they used to be 120a? No doubt someone will advise on this.

Nov 14th, 2011, 22:04	#7
DavieC Member Last Online: Jan 11th, 2023 12:55 Join Date: Jun 2006 Location: Forres	Mines a 2006 S40 2.0D. It had a 150a alternator.

Nov 14th, 2011, 22:34	#9
blacklab Senior Member Last Online: Jan 19th, 2024 19:56 Join Date: Nov 2009 Location: Swansea	Now that's just expensive! Lol I guess I'll just keep using it and see what happens I reckon?! Will keep you posted................

Nov 17th, 2011, 16:54	#10
blacklab Senior Member Last Online: Jan 19th, 2024 19:56 Join Date: Nov 2009 Location: Swansea	Update..Called in to the indi today who says that the noise, like davieC said, is from the alternator. So I'm going to take my chances and see how long it lasts!

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