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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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Old 06-09-2006, 01:35 PM   #1 (permalink)
n00b
 
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Exclamation 540 - Water Leak - Radiator? Exp Tank? Water Pump?

Hi folks, I have a 97' 540 E39 with 130k miles. I noticed today I have green water coming from under the middle of the engine area. The radiator and expansion tank were replaced at 120k and was done by the previous owner (I have invoices). Could this mean, my Water pump is out?

Any suggestions on what this problem is and how much it will cost me to fix it? Thanks.
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Old 06-09-2006, 01:56 PM   #2 (permalink)
LOS
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It's really hard to tell. The only way to know for sure is to locate the leak. It could be a hose as well. Click on the link below. It shows the whole cooling system diagram.
http://realoem.com/bmw/partgrp.do?mo...88&hg=11&fg=35

They sell a green/bright stuff that you mix with the coolant and run the car. That's how they spotted & confirmed the leak coming from the water pump on my Fiero GT a few years back at the Pontiac Dealer.

LOS

Last edited by LOS; 06-09-2006 at 02:04 PM.
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Old 06-09-2006, 10:13 PM   #3 (permalink)
cnn
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Just did the whole write-up for my 98 528i

Quote:
Originally Posted by windarra
Hi folks, I have a 97' 540 E39 with 130k miles. I noticed today I have green water coming from under the middle of the engine area. The radiator and expansion tank were replaced at 120k and was done by the previous owner (I have invoices). Could this mean, my Water pump is out?

Any suggestions on what this problem is and how much it will cost me to fix it? Thanks.
Yours is 540i so a bit different but the idea is the same.

Here it is:
http://bimmerboard.com/forums/posts/199986

HTH.

cnn
98 528i 5spd 89K
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