HELP! WHISTLE SOUND WHEN ACCELERATE!

Anonymous · February 15, 2010, 16:07

It would be lovely to know if anyone's had this problem or knows what one earth it could be! If I don't get this fixed I am going to lose my mind!

Every time I put my foot down on the accelerator my car makes an extremely annoying high pitch whistle sound, it doesn't continue if I keep my foot down it only makes the noise at first.

It isn't clear exactly where in the engine the noise is coming from and I've had opinions off three different mechanics, one from a Toyota dealer itself. They all assumed this whistle sound was a result of an air leek and a problem with the inlet manifold gasket. After having my engine taken apart and the inlet manifold gasket system changed, it's now clear that this whistle cannot be an air leak! Now each mechanic appears clueless!

The car performance is only slightly affected and not entirely noticeable, when the car whistles it seems to have a tiny flat spot. The engine light isn't on so It can't be causing any damage to the car, only me and my head!

ad_car_08 · February 15, 2010, 16:09

Is the car completely standard, or has an aftermarket filter been added etc?
Might help to narrow down where the whistle is coming from

Anonymous · February 15, 2010, 16:17

Thanks for replying so quick!

It's completely standard! I bought it in august it's a w reg. The person before me said it had been making the whistle noise since he had it in 04, i've even had someone say it sounds like the cambelt is slipping but it's not and nothing to do with that.

I personally think it sounds more high pitch when it's been raining.

cclarke99 · February 15, 2010, 16:29

It could be the accesory drivebelt slipping, this will get worse if it's wet. Inlet manifold noises (downstream of the throttle body) are generally worse when the engine is idling as the vacuum is stronger and will disappear if you accelerate (vaccuum is less). Upstream of the throttle body there isn't enough pressure difference to make it whistle. I'd ask someone to look at the accessory belt tension - if it's been slipping since 2004 it will be pretty worn by now

mrzwei · February 15, 2010, 16:30

Hasn't got a cam belt its got a timing chain so no worries there.
Auxilliary belt (fan belt); an easy check just to eliminate.

uktotty · February 15, 2010, 16:39

what is an accessory belt? Sounds like something from Primark

Anonymous · February 15, 2010, 16:40

lol!!! primark!!!!!!!!!!

Thanks to both of u!

Ahhh I think I have heard someone mention the accessory drivebelt before,

Sorry i'm going to sound like a real girl now, is that under the car? Like when you put your foot down it pushes some thing under the car to the engine, something to do with it's power? oh I don't even know how to explain ?

uktotty · February 15, 2010, 16:42

dont ask me babe, I didnt even know what it was LOL!

Anonymous · February 15, 2010, 16:44

lol okay question directed to cclarke99 or anyone else who knows!!!!!!!!!!!

StuM · February 15, 2010, 16:51

As you look in the engine bay, it's a belt round some pulleys visible low on the right hand side.

Anonymous · February 15, 2010, 17:02

Thanks!

Do you think as well this could be the culprit of the whistle?!

StuM · February 15, 2010, 17:06

I would normally describe a slipping belt fan as a 'screech' noise, rather than a whistle. Does it do it all of the time, or is it intermittent?

There might be a member local to you that could have a listen.

Anonymous · February 15, 2010, 17:21

Quote from: "danielle3989"Thanks!

Do you think as well this could be the culprit of the whistle?!

How hot are you? Could be builders etc perhaps?

Anonymous · February 15, 2010, 17:27

Sounds like it could be the belt, this may happen if the tensioner is on it's way out or a bearing is seizing up.

Does the sound seem like it's coming from your right side when you are driving the car.

Where are you based.

cclarke99 · February 15, 2010, 19:40

Sorry I was in a bit of a hurry replying and didn't explain it properly. It's a drive belt that connects the engine to the alternator, air conditioning pump and water pump. If the belt is loose and the engine speeds up it can't pull the other bits round fast enough and the belt slips, which makes the sound. StuM is right, it's more of a screech than a whistle. It's worse when it's wet, obviously and also often first thing when you start, as it's cold and doesn't grip so well, also because the alternator is working harder to charge the battery. Any garage should be able to look at it and tell you if it's the problem.

Anonymous · February 17, 2010, 12:24

Thanks peop!

It's deff worse when wet and I'm not sure about when engine first starts i'll have to listen more... It doesn't happen when the car's over 60mph?

It's a screechy whistle, not like builders lol!!! Maybe more of a screech if you compare to an actually swiss swoooo. Hard to describe! It's deff more of a screech when wet.

Each time I put my foot down and make the car speed up it makes it.

I can't really figure out what side it's coming from, if i have a passenger they'll say it's behind them which would be left but when I have my window open or roof down i think it's behind me!!! It's just loud!

Is it quite rare because it didn't pop to any of the mechanics minds when listening?

I'm in Bristol.

muffdan · February 17, 2010, 12:27

it does sound like the belt is slipping, but I'd have thought a mechanic would have picked it up straight away. I assume they've gone out in the car and heard it?

Anonymous · February 17, 2010, 12:33

Oh yes!!

Two have raced it around to get the ear full, their heart was set on it being an air leek though.

Can this happen to all cars?

One mechanic used to work for peugeot and said he's never heard anything like it and the other deals with all sorts except bmw''s. I even asked a toyota mechanic and he was like inlet manifold gasket for sure bla bla bla

Anonymous · February 17, 2010, 12:54

I just spoke to one of the mechanics again he doesn't live far and he's determined it's still and air noise just doesn't know what!

Ilogik · February 17, 2010, 13:07

you didn't get done by this lot did you

m http://www.youtube.com/watch?v=jpl_ey5cVnk m s:lol: :lol: s:lol:

uktotty · February 17, 2010, 13:10

replace the whistle with a horn
m http://www.youtube.com/watch?v=XvdjOsvB ... re=channel m

Ilogik · February 17, 2010, 13:16

Those two black dudes looked scared, probably thought it was a drive by s:lol: :lol: s:lol:

Anonymous · February 17, 2010, 13:21

No I don't think they did it!!! lol

If changed the lovely screechy whistle to a horn I think i'd cause a lot of accidents !

Including my own !

That was indeed terrifying.

Anonymous · February 17, 2010, 17:13

Will anyone ever no what's what with my poor baby s:(

s:(

Ilogik · February 17, 2010, 17:14

where are you located btw? i can recommend a garage that will probably find your whistle sound if in the midlands. You dont have an induction kit of any sort do you?

HELP! WHISTLE SOUND WHEN ACCELERATE!

uktotty

uktotty

uktotty