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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 08-12-2007, 01:19 PM
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samsonite samsonite is offline
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Whining noise

Hey guys, is it normal to have a slight whining noise when accelerating in lower gears? I have noticed it when driving 4x4s so maybe it's because of the rear-wheel drive?

If it's a bad noise, I'll get my wallet out (again).

This is my first bimmer, so noises are all new. The engine sounds great though
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  #2  
Old 08-12-2007, 01:22 PM
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Could be a wheel bearing buddy, or possibly the diff needs some new oil

Open your windows while doing about 20 mph, dip the clutch and see if you still hear it. if you dont then i say the diiff, if you do then it is probably a bearing

Not expensive really. £100 absolute max for either
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  #3  
Old 08-12-2007, 01:27 PM
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The only thing that I can tell is it only happens while pressing the accelerator. If I take my foot off it stops...
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  #4  
Old 08-12-2007, 01:29 PM
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That is odd. Vacuum leak maybe....

Pop the bonnet and rev the engine and see if you hear it. if not, it maybe gearbox/drivetrain related
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  #5  
Old 08-12-2007, 01:33 PM
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I have the same thing, at low revs, bit whining noise. if i dip the clutch, the noise goes away. I only hear it in 1st and 2nd gears really, below 1500rpm. Then it goes away.

So, Pirate, you say that THAT is the diff needing new oil? Can i drive like this for couple of weeks?
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  #6  
Old 08-12-2007, 01:35 PM
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Yes buddy, but i would not advise it as you are only hurting a VERY expensive part
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  #7  
Old 08-12-2007, 01:46 PM
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my car whines all the time....when i'm sitting there idling, and then when i hit the gas it goes up, and when the rmp's go down, the whining goes down....kind of like a supercharger... ....it's done it since i've had the car so i'm used to it....and i've checked everything and replaced every fluid in the car numerous times already so whatever....

It is cool when people get in my car that have never been in it and they're like...is this thing supercharged?! and i just smirk and give them a little grin... and then i floor the car going around a turn or after i get to a complete stop i'll let the clutch out slowly and floor it and it'll spin the tires, then drive it normal the rest of the time their in the carand they're like...i can't believe this car is supercharged....

I DON'T SAY IT IS....i just don't say it's not either....

...this has happened to me about 7 times....
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  #8  
Old 08-12-2007, 01:46 PM
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Quote:
Originally Posted by Pirate_copy View Post
That is odd. Vacuum leak maybe....

Pop the bonnet and rev the engine and see if you hear it. if not, it maybe gearbox/drivetrain related
I'm sure it's gearbox/drivetrain related as it only happens when the clutch is engaged. I have done a couple of thousand miles with the noise now. Doesn't seem to be a problem as such, but if it's bad I would like to sort it out!
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Old 08-12-2007, 01:47 PM
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lol
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  #10  
Old 08-12-2007, 01:48 PM
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When it happens, push the gearstick further into gear (up for 1st, 3rd and down for 2nd and fourth etc) and see if it still happens
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  #11  
Old 08-12-2007, 01:52 PM
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Originally Posted by Pirate_copy View Post
When it happens, push the gearstick further into gear (up for 1st, 3rd and down for 2nd and fourth etc) and see if it still happens
Ok, will try on the way to work tomorrow. What will it mean if it stops? What if it doesn't?

lol.
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  #12  
Old 08-12-2007, 02:00 PM
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Dunno, just thought it sounded good hehehehe

I joke. If it stops it maybe a linkage problem, but i would still try the oil option first
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  #13  
Old 08-12-2007, 02:16 PM
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Cheers Pirate. I will bear this in mind. I'm going to take the car to a garage down the road - they will check it out for free. The garage I have used before charge for everything that they check out!
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  #14  
Old 08-12-2007, 02:21 PM
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I think the slight whining noise is simply the worn bevel gear that fits loosely against the differential of the rear axle. The whine is caused by the metal teeth resonating against one another. It isn't a problem. Do you have a lot of backlash when you put your foot down or change gear?

Otherwise, it's just normal gearbox noise!! 1st and 2nd gear always sound like that.
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  #15  
Old 08-12-2007, 02:34 PM
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Originally Posted by B/\/\W View Post
I think the slight whining noise is simply the worn bevel gear that fits loosely against the differential of the rear axle. The whine is caused by the metal teeth resonating against one another. It isn't a problem. Do you have a lot of backlash when you put your foot down or change gear?

Otherwise, it's just normal gearbox noise!! 1st and 2nd gear always sound like that.
No problems with driving or changing gear, just sounds like the millenium falcon in 1st and 2nd. still makes slight noise in 3rd & 4th until you get over 30mph, but then sounds sweet after that. I only really notice it in traffic jams, but on the fast roads it flies like good'n!
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  #16  
Old 08-12-2007, 03:04 PM
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If its only in first and second gear, I would suggest its just the syncro's in the gearbox meshing together.

When they get a bit worn and old (not saying there stuffed) they can make a bit of noise.

Cone
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  #17  
Old 08-12-2007, 03:14 PM
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If I am not mistaken, It could be that noise control valve on the exhaust outlets. The one wich opens up after 2,000 or 2,500 RPM's . It could be that right ? Maby stuck open or half open/closed ? Its the one on the right of the two outlets. Has a small door on the inside.
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  #18  
Old 08-12-2007, 03:20 PM
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Possible I supppose, but the noise happens as soon as I start moving and gets higher pitched the faster I go - that's why I guess gears/drivetrain. The best way to describe the sound is that it sounds abit like when you reverse any car at a reasonable speed - that kind of whining...
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  #19  
Old 08-12-2007, 03:22 PM
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Then I reckong its youre diff. Try changing the oil. Maby use a thicker grade.
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  #20  
Old 08-12-2007, 03:23 PM
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Wont have one on a 318i buddy, they are on stock exhausts with 2 pipes

If anyone on here has 2 exhaust tips and HASNT done the 'golf tee trick' DO IT NOW....NOW...NOW

It will give you an amazing rumble when the car is idling -

To do this look up under the car and you will see a little rubber hose going to the top of the exhaust tip. Pull that pipe out and put a golf tee (or similar) into the hose. This keeps the flap open and gives you a great rumble
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  #21  
Old 08-12-2007, 03:26 PM
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I guess this won't be the case if I upgrade to a twin exhaust?
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  #22  
Old 08-12-2007, 03:27 PM
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Quote:
Originally Posted by Pirate_copy View Post
Wont have one on a 318i buddy, they are on stock exhausts with 2 pipes

If anyone on here has 2 exhaust tips and HASNT done the 'golf tee trick' DO IT NOW....NOW...NOW

It will give you an amazing rumble when the car is idling -

To do this look up under the car and you will see a little rubber hose going to the top of the exhaust tip. Pull that pipe out and put a golf tee (or similar) into the hose. This keeps the flap open and gives you a great rumble
Not fair, I want that!
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  #23  
Old 08-12-2007, 03:28 PM
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At least the car drives great and I'm driving to Devon next weekend. A 4 hour journey, but that is a pleasure in a bimmer!
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  #24  
Old 08-12-2007, 03:28 PM
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Shame I didnt have that on my previous half burned 325i! I looked everywhere and it just wasnt there!
Japanese model's maby?
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  #25  
Old 08-12-2007, 03:32 PM
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What part of Devon buddy?
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