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5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

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#1 (permalink) Old 05-03-2006, 06:18 PM
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noise from engine

When I have the car on (D) and I'm at a stop light I hear this whistling noise coming from the belt/fan area of the engine... as soon as I touch the gas (even a little tip) the noise is no longer there. One day I decided to spray the belts with WD 40 and the noise momentary stop but few min' later it came back on again.

What could this be?
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#2 (permalink) Old 05-03-2006, 06:20 PM
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Could be your belt has gone bad...check the belt for glazing, cracks, any signs of wear and replace both...if noise persists it could be a bearing in a pulley (but more likely from the sound of what you are hearing it's the belt)

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#3 (permalink) Old 05-03-2006, 06:29 PM
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How much does the belt cost at the dealer?
I have a 1999 528i

thx
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#4 (permalink) Old 05-03-2006, 08:44 PM
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it shuoldnt be too much... my guess is the fan belt concitering it doesnt do it all the tiem...
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#5 (permalink) Old 05-03-2006, 09:35 PM
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Mine has just started doing this as well. I took video of it tonight. Does it sound like this?

http://us.f13.yahoofs.com/bc/43ce3bc...uqWWEBcjcPzBos
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#6 (permalink) Old 05-03-2006, 09:40 PM
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Quote:
Originally Posted by tracetrimble
Mine has just started doing this as well. I took video of it tonight. Does it sound like this?

http://us.f13.yahoofs.com/bc/43ce3bc...uqWWEBcjcPzBos
Yup thats the exact sound man... did you find out what was cosin' it?
cool video man.
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#7 (permalink) Old 05-03-2006, 09:57 PM
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i cant play the link... it keeps saying its broken... post it on u tube and i can give you some of my help...
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#8 (permalink) Old 05-03-2006, 10:01 PM
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try to right click and hit save as.
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#9 (permalink) Old 05-03-2006, 10:03 PM
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Do NOT spray WD40 on your belts!
It will cause slippage, and mess up your belts.

They have a special grease for belts at auto shops.

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#10 (permalink) Old 05-03-2006, 10:05 PM
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still not working... i dono...
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#11 (permalink) Old 05-03-2006, 10:23 PM
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You know the price of the belts really isn't all that much and it isn't a hard job to accomplish either, but if you really have to take it to the dealer, expect to pay at least 1hr labor plus the price of parts

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#12 (permalink) Old 05-03-2006, 10:44 PM
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Could be a loose tensioner

Quote:
Originally Posted by Five-2.8i
When I have the car on (D) and I'm at a stop light I hear this whistling noise coming from the belt/fan area of the engine... as soon as I touch the gas (even a little tip) the noise is no longer there. One day I decided to spray the belts with WD 40 and the noise momentary stop but few min' later it came back on again.

What could this be?
The device that applies pressure on the roller to keep the belt tight.
Anyway, I do not have the problem but will do the Big cooling dept job this weekend and will post pics at bimmerboard.com.

Stay tuned.
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#13 (permalink) Old 05-04-2006, 08:48 AM
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No, I haven't figured it out yet. I've only heard it a couple times now, but it's very noticeable, and definitely coming from a belt-driven accessory. The fact that it comes and goes says to me it's something that runs intermittently (fan, a/c). I turend the a/c on and off, and it didn't change, so I'm checking the fan when I get a chance to work on it.

What's the big cooling dept job? Radiator & WP?
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#14 (permalink) Old 05-04-2006, 09:00 AM
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Quote:
Originally Posted by tracetrimble
What's the big cooling dept job? Radiator & WP?
I am doing the complete overhaul:

* Radiator + Expansion Tank
* WP
* Belts x 2
* Rollers x3
* Tensioners x 2
* Thermostat
* Hoses x 2

Will post picst at bimmerboard.com
Stay tuned.

98 528 89K
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#15 (permalink) Old 05-04-2006, 09:15 AM
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Guys, the belt replacement procedure is simple. Check out the repair manual for E34 on this forum. It's the same concept for E39's.
I replaced my belts on my 8 (E31) (again, same concept as E34/E39) and it wasn't that difficult. You'll need to draw a belt diagram that's shows you how the belts are attached to the pulleys/idlers.
I bought my parts from www.autohausaz.com

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