Done about 500 miles in the Z this weekend and I've noticed the car has started making a whining noise as I accelerate.

It's coming from the engine bay and sounds just like the noise a supercharger makes :confused:

Car is running great but a bit worried what it might be :eek:

boost leak, check hoses coming up and from actuator.

knackered AC or PAS pump sound just like this.

should perhaps have thought before posting that. AC will cut out when accelerating, if you even still have it fitted, and PAS rarely go wrong unless run dry of fluid, so yeah, ignore my last post :p

knackered AC or PAS pump sound just like this.

 

I think you might have it there.

My PAS has had a few leaks recently and it's been running very low on fluid a lot as it was just running out and costing me a fortune in fluid.

I actually got it fixed when I ripped out all the HICAS stuff a few weeks ago so bit of a shame if it's finally knackered the pump just as I've sorted it :(

Will see what happens but it actually sounds quite cool LOL

I've got a spare pump if that's what it is.

The aircon has been stripped out so unlikely ;)

 

It's not a boost leak, definately a mechanical whirring sort of whine that builds up with speed.

likely culprit then, easy to quickly whip the belt off and see if the niose goes away then.

likely culprit then, easy to quickly whip the belt off and see if the niose goes away then.

 

Actually I didn't notice it making a noise when I wasn't moving - I'll check tomorrow.

It seems to start as you pull away and can be heard up to about 35mph then it goes away or gets drowned out.

Surely if it was the PAS pump it would make a noise just revving the engine?

Does the speed sensitive side of things alter pressures that might affect it?

I'm not sure my arms are big enough to try driving it without the belt LOL

yeah it will make a noise when revving, and at idle. Varies with speed not rpm then? If so then err, gearbox? :confused:

Shiiiit I hope not LOL

Does seem speed related. I'll investigate tomorrow.

Mine did that, it was the oil pump

When my PAS pump went it only made a noise when under load - i.e. when the wheel was turned.

I think it might be the gearbox or diff.

It does it in any gear but kind of dies away above about 40mph.

If I dip the clutch the noise stops :(

I have been thrashing it a bit with close to 500bhp going through it.

Don't have much luck with that car eh :(

I have been thrashing it a bit with close to 500bhp going through it.

 

 

thats not like you chris :D

No i've just fitted a new OS Giken clutch that can finally take the power and the next weak link goes :(

Depends if it's likely to fail or just get noisier.

thats not like you chris :D

 

LOL I do drive like a tw@t it has to be said :rofl:

Every car I've had has had at least 2 gearboxes and new suspension LOL

meh just carry on with it and tell people you have straight cut gears :p

Try replacing the clutch release bearing, especially if the noise disappears when you dip the clutch

that would be related to engine rpm not road speed though.

It's only just had an OS Giken twin plate clutch along with their special bearing about 1000 miles ago and it's not the usual clutch chatter type noise you get.

Sounds more like an electric car pulling away.

I've noticed the same on mine it makes a noise like a supuercharger in 1-3 then stops in 4 and 5 and also the noise dissapears when the car is stationary soon as i dip the clutch??????

LOL I do drive like a tw@t

 

 

 

ENOUGH SAID.........................LOL..................... :nana2:

It's only just had an OS Giken twin plate clutch along with their special bearing about 1000 miles ago and it's not the usual clutch chatter type noise you get.

Sounds more like an electric car pulling away.

 

Possible Primary shaft bearing!! :shock:

That sounds expensive!