Whinning noise acceleration/deceleration 318i e46 n46

Hi All,

Ive noticed recently that when I start engine from cold I can clearly hear a whining noise on acceleration and deceleration. It last until the engine is warmed up. Thought it might have been the cold weather not so sure now.

Last night took it out for a spin and it sounds louder than ever before.

Any ideas?

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Originally Posted by detonator

Hi All,

Ive noticed recently that when I start engine from cold I can clearly hear a whining noise on acceleration and deceleration. It last until the engine is warmed up. Thought it might have been the cold weather not so sure now.

Last night took it out for a spin and it sounds louder than ever before.

Any ideas?

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Chain or alternator.

Women :rolleyes: They dont like the cold:tounge:

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Originally Posted by Venom

Quote:

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Originally Posted by detonator

Hi All,

Ive noticed recently that when I start engine from cold I can clearly hear a whining noise on acceleration and deceleration. It last until the engine is warmed up. Thought it might have been the cold weather not so sure now.

Last night took it out for a spin and it sounds louder than ever before.

Any ideas?

---

Chain or alternator.

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I purchased the car approx 2 months ago, Dealership had to get a job done on the timing chain, cost them near 1800euro.

Its still under warranty. Is summit gonna give if I continue to drive it?

Quote:

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Originally Posted by detonator

Quote:

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Originally Posted by Venom

Quote:

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Originally Posted by detonator

Hi All,

Ive noticed recently that when I start engine from cold I can clearly hear a whining noise on acceleration and deceleration. It last until the engine is warmed up. Thought it might have been the cold weather not so sure now.

Last night took it out for a spin and it sounds louder than ever before.

Any ideas?

---

Chain or alternator.

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I purchased the car approx 2 months ago, Dealership had to get a job done on the timing chain, cost them near 1800euro.

Its still under warranty. Is summit gonna give if I continue to drive it?

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hard to tell, take a vid and lash it up here. Where exactly is the noise coming from?

I reckon it's gearbox or diff, could be power steering pump either. Do you have the service history? Or any record of when the oil was changed or maybe topped up in either of them? BMW have "lifetime" oil in some but it's a load of crap, what's lifetime, 10 years? 20? 100k? 200k? 700k?

Take it for a spin and put it in neutral (while driving) and if the whine goes away then it's not the gearbox / power steering pump at least :)

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Originally Posted by Peter-E36

I reckon it's gearbox or diff, could be power steering pump either. Do you have the service history? Or any record of when the oil was changed or maybe topped up in either of them? BMW have "lifetime" oil in some but it's a load of crap, what's lifetime, 10 years? 20? 100k? 200k? 700k?

Take it for a spin and put it in neutral (while driving) and if the whine goes away then it's not the gearbox / power steering pump at least :)

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ok, I'll take a video when get home later thanks.
I'm told they serviced it just before I got it.

Quote:

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Originally Posted by detonator

Quote:

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Originally Posted by Peter-E36

I reckon it's gearbox or diff, could be power steering pump either. Do you have the service history? Or any record of when the oil was changed or maybe topped up in either of them? BMW have "lifetime" oil in some but it's a load of crap, what's lifetime, 10 years? 20? 100k? 200k? 700k?

Take it for a spin and put it in neutral (while driving) and if the whine goes away then it's not the gearbox / power steering pump at least :)

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ok, I'll take a video when get home later thanks.
I'm told they serviced it just before I got it.

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Do, hopefully nothing major :)

Service is a very vague term that can mean anything from oil and oil filter to, air filter, pollen filter, fuel filter and even brake pads etc. They wouldn't replace the gearbox oil or diff oil unless there was a reason to I wouldn't think they would just do it as routine maintenance. If the oil was replaced with the wrong kind of oil it might still whine anyway too! Best to ask them what exactly they did.

To be frank, if the car is under warranty I wouldn't even lift the bonnet, I'd call them and have them pick it up. Also if your not sure then don't drive it. Think of your safety and your pocket :smiling:

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Originally Posted by Venom

To be frank, if the car is under warranty I wouldn't even lift the bonnet, I'd call them and have them pick it up. Also if your not sure then don't drive it. Think of your safety and your pocket :smiling:

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Question,...So did doesnt make a difference we'll be still looking at the same possible issues even though these noises stop once the engine is up to operating temperure??

Ok posted video:

https://m.youtube.com/watch?v=K86h16kAhn8

Sound is constant, whines up and down with acceleration and deceleration.

Quote:

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Originally Posted by detonator

Ok posted video:

https://m.youtube.com/watch?v=K86h16kAhn8

Sound is constant, whines up and down with acceleration and deceleration.

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Can't view the video is set to private

Apologies, changed to public now.

jasus, hard to hear it properly with that video!!!


sounds like the box though, maybe the diff, its hard to tell. Which would explain why the whine goes away once it warms up. No harm to change the oil in them if you don't know when it was changed last.

edit: I presume when you start it from stone cold and give it a few revs before moving off theres no whining?