When on boost i get this whistling noise coming from under the bonnet, i can be doin 70 on the motorway and nothing as soon as i accelerate i get the whistle it also does it in all the other gears even low down.
Any ideas?
Cheers
Stu


PS: The whistle sounds like the noise you get when the window is open a tad.

 

thats your turbo spooling up

 

but it never used to make the whistle noise

 

Its prob wind passing over the misses private parts

 

ok seriously now


whats the car setup do you have a full decat or a downpipe decat ?

and what model is it ?

on my full decat i noticed that you can hear the turbo whistle alot louder then with a cat

leaking pipe somewhere ?

maybe worn turbo bearings, how does the car drive otherwise ?

cheers

reg

 

its a 2001 P1 its covered 31k totally standard

ive had the car just over a week, 1st time ive heard the noise

Cheers
Stu

 

its just standard ?

maybe a leak, check the pipes around the turbo area and see if any is loose or has partially off


reg

 

its totally standard yup apart from the P1 optional factory exhaust.. i will check for leaks is that all it could be ?

 

if the car drives normally it could just be a small air leak somewhere

have you messed around in the engine bay lately, common if you do some work you accidently push to some pipes or pull them off slightly unintendedly

reg

 

nope i dont go under the bonnet lol ive only had the car a week the noise just started on the way to work this morning

 

a week, then maybe the former owner messed around before he sold it to you ?

maybe a pipe that was loose has come even more off after you have given it some stick

i would check for that still, all the pipe work around the turbo area, small rubber hoses etc.

cheers

reg

 

the previous owner worked for Prodrive no messing around with the engine is deffo out of the question.. cheers for the help i shall investigate the turbo pipe work

Thanks reg for your advise

 

by "messing around" i mean that in a positive way

i wouldnt worry about the whistling noise i dont think its anything serious

good luck and i hope you find the cause

reg

 

I'd suggest it maybe asplit on the soft rubber part of the Inlet pipe that attatches to the front of the turbo.

I had a strange whistling noise suddenly appear, and when I got round to upgrading the turbo, found there was a split in this part of the hose!.

You would need to replace it, which is: A) Not very easy to do without alot of messing
B) Difficult to see if it is split until removal.

 

check bolts holding down dump valve on intercooler.will make a whistling sound if loose or seal damaged when boosting.