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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 07-08-2012, 06:07 AM
540iver 540iver is offline
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Location: virginia
 
Join Date: Mar 2012
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Mein Auto: bmw 540i
anti freeze leak

I've got small antifreeze leak coming from under motor! Any answers where it could be coming from? Just had radiator/expansion tank replaced. Haven't replaced water pump/thermostat yet getting to that next.
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  #2  
Old 07-08-2012, 06:19 AM
MurrayP MurrayP is offline
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Location: Kingston Ontario
 
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Mein Auto: 98 540i
If the small leak is at the back of the engine and dripping out of the bell housing, it is likely the valley pan gasket. Here's how to fix it!



Replace the water pump/thermostat and CCV on the back of the intake manifold while you are at it.
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1998 540i M62 completely stock with $25K of maintenance to keep it that way!
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  #3  
Old 07-08-2012, 07:04 AM
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bluebee bluebee is offline
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Location: San Jose, California
 
Join Date: Mar 2008
Posts: 19,181
Mein Auto: 02 BMW 525i M54 automatic
If it's the VPG, then these will help:
- How to fix poorly designed V8 valley pan gaskets that leak coolant (1) (2) (3) (4) (5)

If not, check out this thread for where else you can leak coolant:
- Pictorial look at typical E39 cooling system failure modes (1)
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Note: Your mission, should you decide to accept it, is to add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need, in seconds!
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  #4  
Old 07-08-2012, 11:01 AM
JimLev JimLev is online now
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Location: MA
 
Join Date: Dec 2003
Posts: 3,474
Mein Auto: 540/6, S60 Volvo, Tribeca
It could be from 10 different locations. Do you have an automatic of a manual?
What year is the car.
Drop the lower engine cover and take a look, that will be quicker than reading tons of post that are pointing to every leak these cars have ever had.
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2000 540/6 Slightly tweeked...everywhere
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  #5  
Old 07-08-2012, 04:36 PM
540iver 540iver is offline
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Location: virginia
 
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Yeah its a automatic! 97 model! I'll play it smart and take your advice JimLev, drop the lower engine cover and take a look.
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