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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 03-10-2013, 07:35 AM
EWeis EWeis is offline
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Location: Ohio
 
Join Date: Jan 2010
Posts: 29
Mein Auto: 1999 328i
Transmission leak

Not so much a leak as it was a gusher. Was reversing out of driveway and it was barely moving. Then I notice a large pool of fluid. It gushed out about a quart.
I got it up on stands and looked around hoping that it was just a cooling line that broke or popped off but it appears to be coming from the transmission housing.
See attached pic. In addition to the drips on the outside of the housing, looking through the inspection hole I could also see drips.

What does this mean? What is this likely to be?
I have a '99 328i with the automatic GM tranny.

Sent from my EVO
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Last edited by EWeis; 03-10-2013 at 07:56 AM. Reason: To add pic
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  #2  
Old 03-10-2013, 09:21 AM
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halltristan halltristan is offline
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Location: Tennessee
 
Join Date: Feb 2012
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Mein Auto: 325i and X3
Could be the filter housing gasket. Can't tell from pics though.
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Old 03-10-2013, 09:45 AM
EWeis EWeis is offline
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Location: Ohio
 
Join Date: Jan 2010
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Mein Auto: 1999 328i
I've been reading around and found people talking about large leaks out of a breather hole for the transmission. And, those people usually associated it with cold weather. Same as my situation.

So, what causes the fluid to gush out of the breather hole?
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Old 03-10-2013, 07:31 PM
EWeis EWeis is offline
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Location: Ohio
 
Join Date: Jan 2010
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Mein Auto: 1999 328i
Re: Transmission leak

Here's an update.
I did a fluid and filter change. After changing the fluid I continued running it through the gears while up on the stands. And boy it sounds bad. Lots of grinding and slipping. It wasn't on the ground and of course not under any real load and I couldn't even give it any gas because it would just slip and grind...both in drive and reverse.

The transmission/limp mode light (the one with the triangle and exclamation point) kept flashing when I tried to give it any gas.

Unless someone thinks it could be anything else, I think I'm in the market for a rebuilt transmission. Just surprised that is have such a serious failure with no symptoms. It had been driving strong and shifting smoothly.

Anyone know where I can get a transmission near Columbus, Ohio? I might be up for trying it myself but I may use a shop. Any good ones in the area?

Sent from my EVO
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