SwishOvBolton

why does my car whistle when i hit the turbo , it whistles like a womans high pitched voice only wen hittin like the turbo even when just gradually accelerating , i hope my turbo has not blown on me i will be mortified or even packed up , it had a dvalve on the other day but its worked fine untill today .... could this be cause it just sounds really bad like a scaletrics car accelerating , when the turbo comes in ,


HELPPPPPPPPPPPP

Scooby Roo

Depends if you have changed the downpipe for something a little different then the whistle is pretty normal. If it increases when accelerating then this should be ok. However, if it sounds labourous (please don't ask me to explain) then there is the poss that the turbo bearings are kaputt

Other than that get it checked.

Ta

SwishOvBolton

no nothing has been modded onto it only a blitz super sound , from apr racing , thats the only mod i have on it and its only been in the last hour its started to do it ,


the only thing i done to the car since was open the valve on the bov to make it louder , and im wonderin if ive opened it 2 much oor tightened it 2 much and the bov is squealin with an open air way somewhere , and air is escaping or whatever , but performance is not laggin or anything like that as i can tell not 1 bit really

New_scooby_04

iTrader: (4)

I've heard that over-filling with oil can contaminate the boost solenoid, which-apparently- manifests itself as a whistle on acceleration. I'm not a engineer or mechanic though, so I'd get it checked out by someone in the know.

Best.

trails

iTrader: (41)

I have a similar issue; sounds like a high pitched scream and gets more intense as boost rises...I have had a quick look and think it may be the pipe from the BOV on the right (on my MY00 anyway), as the rubber seems to have degraded quite badly...at least I hope that’s all it is I'll replace the pipe with a Samco (or similar), as soon as I find out exactly what it's called!!

Anyone had experience of this weirdness ?!?

morpheous

iTrader: (9)

I get a whistle around 1500 - 2000 rpm just when feathering the pedal its almost like a pipe leaking,but checked everything...when its on boost its a different sound,was told its because of open neck downpipe and filter in air box?? Maybe true cuz nothing before i modded....Goes well ands not causing any probs

trails

iTrader: (41)

Mine is at peak boost and only started doing it after sitting around with engine on\off for over an hour whilst trying to get out of the Jap Performance do at Santa Pod. Seems to be less power on full boost but that couls just be me worrying...

New_scooby_04

iTrader: (4)

Trails, what MY do you have? Impaired performance is another symptom of a contaminated boost solenoid and Pre MY99 were particularly vulnerable IIRC.

Best

trails

iTrader: (41)

its a MY00....

morpheous

iTrader: (9)

Whats the best way to clean the boost solenoid ?

dij

I have had this problem and couldnt find the cause.

I havent yet removed the heat sheild from the turbo yet to check if its the turbo to down pipe gasket.

Sounds like a screaching whistle,but only when it hits high boost.

Bloody annoying,coz Ive been through every pipe,join etc and cant find it.

I hope someone comes up with the answer soon.

I have heard a similar sound on a car that had a dodgy catalytic convertor,and am wondering wether this could be it?

Do all you others have the dp cat inplace?

trails

iTrader: (41)

Yeah, full de-cat. Check the hose from your bov, I'm sure its that...need a voluteer to sit in the engine bay whilst I nail it to try and locate the noise he he he

New_scooby_04

iTrader: (4)

Hmm, if memory serves, the MY99 onwards were less susceptable to contaimnation in the boost solenoid due to over-filling with oil, so its less likely. I'd go with Dij's suggestion mate.

Best.