Slight throttle hum/whirr sound

[TurboDewd]

Hi guys

I only noticed this a few mths back but since it was so trivial I havent raised it here. Anyway, does anyone here notice (you have to have no radio/CD going) that you get a very slight/faint humming/whirring sound when applying throttle?

[JB]

Where from Turbodewd? Can you tell?

Possibly the stero if you have premium sound? Mine does the same thing

[TurboDewd]

standard sound.

It kinda sounds like its coming from drivers footwell but that could be my mind tricking me coz I know it comes on when applying throttle. Unless you were told you had this sound it may take you a while to notice it.

Ill listen closely on the way home n see if I can see where its comin from.

[ZAP]

you might find its the turbo spinning up.

Just because the car is not on boost does not mean its not spinning.

[God666]

or that big rattley thing next to the turbo.... what's it called..... yeah, the engine. Mine makes much more noise than a whirr.

Sorry, nothing useful to add.......

[joes]

I have noticed this noise as well when applying throttle. It will appear for short bursts

and disappear.

As I do a lot of freeway driving, I also noticed the noise when I was driving at

normal speed of 110Km/hour. It was a very windy day with large gusts of wind hitting

the car, the car would slightly jerk left or right to the gusts of wind and at this time

I heard the same whirring noise.

So I gather it is caused by airflow over some part of the car - maybe the windscreen

wipers or air getting blown past the vents under the windscreen wipers.

Regards

Joe

[jordak]

standard sound.

It kinda sounds like its coming from drivers footwell but that could be my mind tricking me coz I know it comes on when applying throttle. Unless you were told you had this sound it may take you a while to notice it.

Ill listen closely on the way home n see if I can see where its comin from.

Is it most noticeable when applying throttle in first and in particular when backing off in first or when it changes to second (auto) . If so sounds the same as mine. Nothing major just one of those enoying little noises that you would rather not have.

[turb06]

It could possibly be turbo noise coming throught the firewall. With an auto there is a big plug on the drivers side firewall where the clutch cable would go through for a manual, this is directly behind the turbo.

When I cut a hole in this plug to hook my boost guage up, I cut it a little bigger cause there is another wire to eventually go through for a trans temp guage, ever since I did that there is quite alot of noise. But I love the sound of turbo induction, so it doesnt bother me.

Dazza.