Volvo Community Forum. The Forums of the Volvo Owners Club

Forum Rules Volvo Owners Club About VOC Volvo Gallery Links Volvo History Volvo Press
Go Back   Volvo Owners Club Forum > "Technical Topics" > S40 / V40 '96-'04 General

Notices

S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004.

Information
  • VOC Members: There is no login facility using your VOC membership number or the details from page 3 of the club magazine. You need to register in the normal way
  • AOL Customers: Make sure you check the 'Remember me' check box otherwise the AOL system may log you out during the session. This is a known issue with AOL.
  • AOL, Yahoo and Plus.net users. Forum owners such as us are finding that AOL, Yahoo and Plus.net are blocking a lot of email generated from forums. This may mean your registration activation and other emails will not get to you, or they may appear in your spam mailbox

Thread Informations

High pitched whistle under acceleration

Views : 1830

Replies : 4

Users Viewing This Thread :  

Reply
 
Thread Tools Display Modes
Old Aug 1st, 2014, 11:27   #1
Alex121
Premier Member
 

Last Online: Oct 27th, 2020 11:45
Join Date: Nov 2011
Location: -
Question High pitched whistle under acceleration

Hi all,

Bit of a weird one here and I'm a bit stuck

Yesterday my car developed a high pitched whistle when on the throttle. It sounds just like a super charger (no I've not fitted one ) and happens when revving at a standstill too. The noise is definitely coming from the engine bay.

The usual turbo spooling whistle is still there but drowned out by this one.

So far I've -

- Checked for vacuum leaks.
- Taken heat shield off and checked turbo
- Checked exhaust manifold
- Checked air filter
- Checked all hoses around the TCV

The car is still boosting to 1.25 bar on the boost gauge which is dead on for my car, so I don't think there is a leak anywhere. Any ideas on what this noise could be?

Thanks for any help
Alex121 is offline   Reply With Quote
Old Aug 1st, 2014, 12:31   #2
Antz
No I'm not the redhead
 
Antz's Avatar
 

Last Online: Nov 25th, 2022 10:49
Join Date: Jun 2009
Location: North Yorkshire Coast
Default

Some kind of pulley making a noise? PAS pulley maybe or auxilery belt tensioner?
__________________
1988 Volvo 240 GLT T5

Swap a T5 motor into your RWD Volvo:The Guide
Antz is offline   Reply With Quote
Old Aug 1st, 2014, 12:45   #3
southportvolvo
Trader
 

Last Online: Nov 19th, 2021 14:18
Join Date: Jul 2007
Location: Southport/Merseyside
Post

Quote:
Originally Posted by Alex121 View Post
Hi all,

Bit of a weird one here and I'm a bit stuck

Yesterday my car developed a high pitched whistle when on the throttle. It sounds just like a super charger (no I've not fitted one ) and happens when revving at a standstill too. The noise is definitely coming from the engine bay.

The usual turbo spooling whistle is still there but drowned out by this one.

So far I've -

- Checked for vacuum leaks.
- Taken heat shield off and checked turbo
- Checked exhaust manifold
- Checked air filter
- Checked all hoses around the TCV

The car is still boosting to 1.25 bar on the boost gauge which is dead on for my car, so I don't think there is a leak anywhere. Any ideas on what this noise could be?

Thanks for any help
Turbo pipe has a hole?
southportvolvo is offline   Reply With Quote
Old Aug 1st, 2014, 13:15   #4
Alex121
Premier Member
 

Last Online: Oct 27th, 2020 11:45
Join Date: Nov 2011
Location: -
Default

I left work and took it to Volvo as I had a thought in the back of my mind that I wanted out.

Unfortunately that thought was correct, turbo shaft has a lot of play, that's what's making the noise.

New turbo at 680 + cambelt + other work it's booked in for - Is it even worth it anymore?
Alex121 is offline   Reply With Quote
Old Aug 1st, 2014, 13:28   #5
skyship007
Premier Member
 
skyship007's Avatar
 

Last Online: May 2nd, 2018 09:14
Join Date: Sep 2011
Location: DownSouth
Lightbulb

Quote:
Originally Posted by Alex121 View Post
I left work and took it to Volvo as I had a thought in the back of my mind that I wanted out.

Unfortunately that thought was correct, turbo shaft has a lot of play, that's what's making the noise.

New turbo at 680 + cambelt + other work it's booked in for - Is it even worth it anymore?
I would just keep the revs below 3K and change to a thicker 10/60 race oil (Mobil 1 10/60 EL etc), then sling in 300ml of Ceratec and hope for the best. If the turbo oil seal has not split, the turbo might well last a long time if the revs are kept low.
__________________
2003 V40 1.9TD Mods: Scratches, bent bumpers, raised REAR mats & internal mud guards.
SHELL ULTRA 5/40 & LIQUI MOLY CERATEC.

Everyone should DYOR (Do Your Own Research)
skyship007 is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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 +1. The time now is 06:10.


Powered by vBulletin
Copyright ©2000 - 2023, Jelsoft Enterprises Ltd.