E87 Whine on acceleration

[Jeags]

Hi all,

Got a whine coming from the engine that has gotten progressively worse. Sounds a bit like a bearing or pulley to me but not certain. Has anyone else had a similar noise before? Wondering whether it's the water pump? See attached for audio. Cheers,

https://youtube.com/shorts/KHTM0gDOtsE?si=51zJJtmQjtydZNaD

Joe

[Greydog]

Morning Joe

When was the car last serviced ? Did they change drive belts ? At higher mileages I would change change Belts and Tensioners, plus while your in there with no belt in the way check the alternator water pump and aircon pump pulleys 

Certainly sounds like a pulley

Good Luck

Dave

[Jeags]

Morning Dave,

Serviced last in February. Had oil, coolant and brake fluid change. As of the belts and pulleys there's nothing in service history. The auxiliary belt does show signs of slight cracking, I've bought a new belt and water pump to do the job but wanted to try and source the noise so I can fix that while the car is in bits. Any suggestions on what pulleys I need? Wanted to try and replace only the worn ones but not a clue how many/which ones need changing.

Cheers,

Joe

[Greydog]

Hi Joe

Take a look at www.realoem.com if memory serves there is a deflection pulley and a tension pulley. The deflection pulley I think is plastic so could well be your culprit

Try a squirt of WD40 on the centre of each pulley (do it 1 at a time) if it stops the noise you know which it is

Dave

[Jeags]

Great, cheers Dave. Will try that tonight.