Overclockers UK Forums Click here for more details
Free Shipping for Loyal Forum Members - CLICK HERE

Go Back   Overclockers UK Forums > Life > Motors

Reply
 
Thread Tools
Old 24th Nov 2010, 17:54   #1
Justintime
Sgarrista
 
Joined: Jul 2006
Location: Edmonton, London, UK
Posts: 8,526
Turbo whine when cold..

Took a trip with a mate up to Lincoln today in his 530D 55 plate.. i noticed upon a cold start (it was about 1C as well) the turbo produced a siren like whine/whistle for about 4 miles before eventually dying off. I commented on it and was surprised when he retorted that my 320D (06) has this exact whine in the morning too.. i think i got so accustomed to it that it didn't occur to me. I started er up, drove and sure enough it was there, went away after about the same mileage. Is this usual in cold weather or am i looking at turbo issues here? Though, honestly i asked my dad and he reckoned he commented on the siren sound last winter. I do let turbo cool and idle it for about 1/2 minute before shutting down etc.. righteously since i bought it. Oh yes, its remapped to 198bhp btw (this summer).. not felt any loss of power, just the usual diesel letarghy for the first mile or so in the cold, all diesels i owned were like this though.

Cheers!

(\_/)
(O.o)
(> <) fap fap fap
Last edited by Justintime; 24th Nov 2010 at 17:56.
Justintime is offline   View trust for Reply With Quote
Old 24th Nov 2010, 18:09   #2
Dogbreath
Capodecina
 
Joined: Oct 2002
Location: Devon
Posts: 16,276
Are you certain it's the turbo and not e.g. low power steering fluid?
Dogbreath is offline   View trust for Reply With Quote
Old 24th Nov 2010, 18:11   #3
Justintime
Sgarrista
 
Joined: Jul 2006
Location: Edmonton, London, UK
Posts: 8,526
It goes up and down with revs.. i also only go hard on it when its warmed up (after 4 -5miles). Eventually it totally goes and no whine/whistle is heard.

(\_/)
(O.o)
(> <) fap fap fap
Justintime is offline   View trust for Reply With Quote
Old 24th Nov 2010, 19:34   #4
DannyDan
Mobster
 
Joined: Jun 2005
Location: Wirral, UK
Posts: 2,668
Mine whistles/whines slightly whether it's warm or cold (525d), and it has done for the 2 years that I've owned it.
DannyDan is offline   View trust for Reply With Quote
Old 24th Nov 2010, 19:37   #5
B@Th*nG
Soldato
 
B@Th*nG's Avatar
 
Joined: Oct 2002
Posts: 5,764
you sure it's not something like a fan blowing hot air into the cold engine? once the engine heats up it stops

B@

B@Th*nG
B@Th*nG is offline   View trust for Reply With Quote
Old 24th Nov 2010, 19:39   #6
-Ad-
Capodecina
 
-Ad-'s Avatar
 
Joined: Nov 2004
Location: Aberdeeeeen
Posts: 13,120
Woman in turbot?

Quote:
Originally Posted by Janesy B View Post
I think you're confusing banter with being downright retarded.
-Ad- is offline   View trust for Reply With Quote
Old 24th Nov 2010, 20:50   #7
Serpantine
Hitman
 
Serpantine's Avatar
 
Joined: Jan 2010
Posts: 569
mine whines cold between 1500 and 1700 rpm.
Serpantine is offline   View trust for Reply With Quote
Old 24th Nov 2010, 20:53   #8
Maz
Soldato
 
Joined: Oct 2002
Location: Newcastle.
Posts: 7,387
Secondary Air Pump?
Maz is offline   View trust for Reply With Quote
Old 25th Nov 2010, 08:55   #9
Matt82
Capodecina
 
Joined: Mar 2004
Posts: 16,509
Quote:
Originally Posted by Maz View Post
Secondary Air Pump?
i thought that too but it shouldnt vary with revs. the valve would only actuate on closed throttle too
Matt82 is offline   View trust for Reply With Quote
Old 25th Nov 2010, 11:16   #10
EliotG
Wise Guy
 
Joined: Sep 2006
Location: Farnborough
Posts: 2,181
My Grande Punto petrol turbo does this too. I was worrying about it but thought it must just be because of the cold.

| 2008 Mazda 3 MPS Aero |
| Lumia 950 || iPad Mini Retina |
| Custom build PC |
EliotG is offline   View trust for Reply With Quote
Old 25th Nov 2010, 11:21   #11
Dogbreath
Capodecina
 
Joined: Oct 2002
Location: Devon
Posts: 16,276
Quote:
Originally Posted by Maz View Post
Secondary Air Pump?
Not on a diesel.
Dogbreath is offline   View trust for Reply With Quote
Old 25th Nov 2010, 11:26   #12
Clarkey
Capodecina
 
Clarkey's Avatar
 
Joined: Oct 2002
Location: Wolverhampton
Posts: 17,030
The 320d does this, maybe just the turbo dying a slow death but yeah the noise really penetrates the cabin. Absolutely no mistake, the noise is from the turbo.

Clarkey is offline   View trust for Reply With Quote
Old 25th Nov 2010, 12:26   #13
Steedie
Capodecina
 
Steedie's Avatar
 
Joined: Jun 2004
Location: Oxfordshire
Posts: 16,090
Quote:
Originally Posted by Serpantine View Post
mine whines cold between 1500 and 1700 rpm.
This, more of a whistle though

After about 2 minutes driving it goes away

Steedie is offline   View trust for Reply With Quote
Old 25th Nov 2010, 19:56   #14
Justintime
Sgarrista
 
Joined: Jul 2006
Location: Edmonton, London, UK
Posts: 8,526
Takes a little longer for me, usually 3 miles or so, but this is in fairly slow traffic so i doubt the engine really gets up to temp by then. How the hell does one see the engine/oil temp on my car btw?
I listened carefully and the noise is still there when fully warm but much much fainter, almost undetecable if you don't know what to listen for. Drove the car again about 2 hours after i got home and the noise wasn't noticeable as the engine would still be a bit warm and its 2C outdoors now so i guess thats not bad at all, its definetly only when sat overnight and fully cold. On a side note the boost feels like a supercar in this cold lmao.

(\_/)
(O.o)
(> <) fap fap fap
Justintime is offline   View trust for Reply With Quote
Old 26th Nov 2010, 00:43   #15
energy
Wise Guy
 
Joined: Oct 2002
Location: North London
Posts: 1,257
My Peugeot Expert HDi does this when cold - its not loud but there is a faint wailing from the turbo for the first 2-3 minutes when the engine is stone cold. Similar to the usual turbo whistle noise but at a much lower pitch. There doesn't yet seem to be any problem with it, uses absolutely no oil and no smoke even when thrashed.
energy is offline   View trust for Reply With Quote
Old 26th Nov 2010, 12:53   #16
MrMoonX
PermaBanned
 
MrMoonX's Avatar
 
Joined: Dec 2007
Posts: 10,040
Our Picasso hdi does this as well, never bothered me as I don't drive it much and I hate it anyway lol
MrMoonX is offline   View trust for Reply With Quote
Old 11th Dec 2010, 17:32   #17
Justintime
Sgarrista
 
Joined: Jul 2006
Location: Edmonton, London, UK
Posts: 8,526
Well, yesterday was much warmer than most days at 10C, noise lasted about 8 mins from cold when i left work and promptly totally disappeared. So its definetly temp related, likely something to do with oil. Having a look about at a few forums, it seems to be a known issue though theres no definite explanation, has happened on brand new cars as well. Theories vary from dying turbo (though this issue was there last year too so i doubt the turbo is going anywhere), some sort of vane closing under a certain temp, to metal contraction. God knows.

(\_/)
(O.o)
(> <) fap fap fap
Justintime is offline   View trust for Reply With Quote
Old 12th Dec 2010, 03:01   #18
Scania
Capodecina
 
Scania's Avatar
 
Joined: Nov 2004
Location: On the road....
Posts: 19,345
My Scania does this, as did my old DAF XF.

Its nothing unusual (imo) and - certainly from a truck point of view - sod all to do with impending engine doom!

I have had virtually new trucks doing this (from cold) as well as my "regular" 290k Mile '08 Reg.


It made a hell of a racket for sure when I started up at 4AM recently, it was -17.

No more than a couple of minutes, once driving, for it to shut up generally although it'll whistle away for ever at a cold tickover, the engine won't warm up unless you drive it....

Last edited by Scania; 12th Dec 2010 at 05:15.
Scania is offline   View trust for Reply With Quote
Old 12th Dec 2010, 11:13   #19
webmonkeyuk
Wise Guy
 
Joined: Aug 2004
Location: Stockton-on-tees
Posts: 1,647
-17! where were you at, i have noticed that my astra diesel does the same when temps are under 5c then goes away when warmed up
webmonkeyuk is offline   View trust for Reply With Quote
Old 12th Dec 2010, 11:31   #20
Scania
Capodecina
 
Scania's Avatar
 
Joined: Nov 2004
Location: On the road....
Posts: 19,345
Quote:
Originally Posted by webmonkeyuk View Post
-17! where were you at
West Calder, West Lothian EH55 area.

I remember that by 07:30 it was a Balmy -14

Scania is offline   View trust for Reply With Quote
Old 12th Dec 2010, 11:37   #21
Muffin`
Caporegime
 
Joined: Apr 2004
Location: Bristol
Posts: 32,932
Mine makes a hell of whine above 2.3k rpm (2.2 TDCi) hot or cold

but during the cold snap the car didnt smoke at all on starup, when it's 1-2c+ it's like a mini smog patch


'96 DC2, '05 GSF 650, C4 Cactus - No ETA
Muffin` is offline   View trust for Reply With Quote
Old 12th Dec 2010, 11:46   #22
MikeHunt79
Capodecina
 
MikeHunt79's Avatar
 
Joined: Jan 2004
Location: \_(ツ)_/
Posts: 20,838
Air leak on the hose maybe?


Everything in moderation. Including moderation itself.
MikeHunt79 is offline   View trust for Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT. The time now is 14:24.


Powered by vBulletin®
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Overclockers UK (Ocuk Ltd)