car sounds like electric motor when driving

[jakex181]

Just wondering, my car seems to whine when im driving kinda like an electric motor sound or the sound of a straight cut gear. It's not very loud but I did notice it today with the radio off. Is this normal? Or a potential problem? Cheers.

[Pesky jones]

What speed?

[cooljimy84]

I changed my alternator pulley, as my clutch was slipping on it. Made a whine a bit like that while driving.
I removed my aux belt and ran the car for a seconds and the noise was not there, i checked the play on the tensinor and that was ok, so being in the middle of the range for life on the pull (60,000-80,000 miles) i had a stab and it was indeed that.

Hope that helps.

Youtube the noise, see if any match up with your noise.

[jakex181]

it only seems to make it when im driving

[TAPPY]

What sort of speed does it make the noise as it could be a wheel bearing

[jakex181]

it seems to stop when i get over 20mph, or i just cant hear it anymore

[cooljimy84]

and it doesn't make the noise when just reving the engine at a stand still?

[TomGTI]

Does it go off when you switch off the air con?

[jakex181]

No it only makes the sound when im driving

[Chris92]

It'll be the gearbox whining

[jakex181]

that doesnt sound good :/. Is this normal?

[jakex181]

Ive just checked again and its actually making the noise when standing still so ill take the aux belt off and see if it still makes the sound. Cheers

[jakex181]

The noise seems to have disappeared, i checked my oil level today and it was very! low, so topped it up and it seems to have stopped the noise :/. Hopefully it wasn't running that low for long