High Pitched Hissing When Touching The Accelerator ( T3 D-4d )

[djs2009]

Hi all, new to the forum.

I bought an 04 T3 D-4D second hand.

Today I noticed that there's a high pitch hissing (similar to the noise some old CRT TV's used to make).

It only happens when I put my foot on the accelerator. When I take my foot of the pedal the noise will stop after around 1 second.

I don't know anything about cars, but my guess would be it may be something to do with the Turbo kicking in? As the noise stops when i take my foot off the pedal.

If anyone can advise me what it could be, that'd be great.

Thanks

[Vitz_man]

Sounds perfectly normal to me, you do know turbo's are supposed to make a hissing noise, so im assuming this is a hissing that doesn't sound right?

[DaronB]

You may have one of your air intake pipes to or from the turbo which has come loose , get someone to check all the air intake pipes , one might also be split.

[Cyker]

I thought turbos made more of a high-pitched whine than a hiss?

I'd think a hiss is more likely some sort of air leak (e.g. turbo air hose as mentioned above...)

[djs2009]

Thanks for the replies.

I drove the car again today. Sorry, I shouldn't really have described it as a hissing noise.

I'm not too sure how to describe it, it's very high pitched, and it's like a mega fast "ticking" (with a hiss)

But it sounds like it's coming from the left hand side of the car (when you're sitting in the driver seat)

I have to drive with the radio on as it's quite irritating to hear it.

Is the turbo "drone" meant to be that annoying?

[mela]

Hi

I also have a yaris D4d since one month ago and I feel from the beginning a different noise not when I touch the acelerator, but when I change the gear and touch the clutch.

It' my first diesel but I don't know if it is normal. Do you think it is better go to the toyota garage??