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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 05-05-2017, 12:19 PM   #21
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Might be the trans pan. A friend of ours hit huge rock that punctured the trans pan and misaligned his shifter.
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Old 05-05-2017, 12:32 PM   #22
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Old 05-05-2017, 01:26 PM   #23
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Remember this # in Japan a few years ago... car got stuck on a manhole cover due to stancebronationwerkz

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Old 05-10-2017, 09:03 AM   #24
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Might be the trans pan. A friend of ours hit huge rock that punctured the trans pan and misaligned his shifter.
Yeah, I have oil.

Trans pan looks much easier. (cheaper)
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Old 05-19-2017, 07:02 PM   #25
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F,

Mechanic can't find damage to the transmission pan.

Thinks it's the torque converter that took the hit but he's still checking.

Does that make sense?
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Old 05-19-2017, 07:24 PM   #26
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His suggestion is a new/used transmission
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Old 05-20-2017, 10:05 AM   #27
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How can a torque converter take a hit from road debris? It's inside the bell housing.
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Old 05-20-2017, 10:31 AM   #28
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Yep, that's me. Last month sucked.
bummer. Motor cycles are not supposed to fall down.

If you lost quarts of oil it should not be too hard to figure out where it came from. I'm surprised your mechanic could not identify the leak pretty quickly once it was on lift. If an axle hit your undercarriage it should be pretty obvious where it hit, and what damage it might have caused.

If you have insurance, take it to the BMW dealer. If you do not have insurance you have to diy or trust your mechanic. Leaks are usually pretty easy to find, fixing them is another matter.
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Old 05-20-2017, 11:42 AM   #29
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F,

Mechanic can't find damage to the transmission pan.

Thinks it's the torque converter that took the hit but he's still checking.

Does that make sense?
Not really. As mentioned, the torque converter is inside and protected by the bellhousing.

Where is it leaking from? If the bellhousing is cracked I guess the torque converter would be a possibility...
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Old 05-20-2017, 01:07 PM   #30
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had you taken to a dealer they'd certainly have damage over $1,000 for you. they would have you down for a new tire and wheel.

sorry OP, stuff like that sucks. hope it works out for you.
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Old 05-20-2017, 02:22 PM   #31
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Thanks.

Well, I'm taking it to a transmission specialist next week.

For him to even try to diagnose it he'd have to drop the trans and that alone's 500 bucks and if it's bad he'd rip and replace as he doesn't do work on the internals.

A hard hit probably broke the seal on the torque converter causing the leak and possibly damaged the transmission.

I'm guessing 2000ish on a car I bought for $3700 :/
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Old 05-20-2017, 04:01 PM   #32
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OP, here in Montreal there are a lot of DIY garages, they rent you a professional lift for 10$/h. They also have some specialized tools like engine hoists and transmission lifts which you can also rent for a little extra. I know at least 3 of these garages in my area. Look for one and if you can identify the problem you can maybe diy it. Good luck with the repairs.
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Old 05-22-2017, 08:32 AM   #33
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OP, here in Montreal there are a lot of DIY garages, they rent you a professional lift for 10$/h. They also have some specialized tools like engine hoists and transmission lifts which you can also rent for a little extra. I know at least 3 of these garages in my area. Look for one and if you can identify the problem you can maybe diy it. Good luck with the repairs.
Thanks,

In a perfect world that's a great idea. But it's not and I don't have the skills to DIY it.

The last transmission I took out was on a 914 but that was pretty easy as they're like big go carts.
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Old 05-22-2017, 09:42 AM   #34
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So it is not the tranny pan or the oil pan. Possibly the transmission oil cooler or oil cooler line?
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Old 05-22-2017, 11:29 AM   #35
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So it is not the tranny pan or the oil pan. Possibly the transmission oil cooler or oil cooler line?
Nope, the engine's full of oil. It's the trans,

Funny, I can't find anywhere on the interwebs where something like this has happened to a BMW.

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Old 05-22-2017, 01:21 PM   #36
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Nope, the engine's full of oil. It's the trans,

Funny, I can't find anywhere on the interwebs where something like this has happened to a BMW.

So possible the tranny oil cooler or oil cooler line is busted?
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Old 05-22-2017, 01:28 PM   #37
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Well, I'm taking it to a transmission specialist next week.

For him to even try to diagnose it he'd have to drop the trans and that alone's 500 bucks and if it's bad he'd rip and replace as he doesn't do work on the internals./
I'm confused. I repeat:

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Where is it leaking from?
Was the original mechanic not able to tell you this? Is it the trans lines? The pan? The bellhousing-block interface?
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Old 05-22-2017, 01:35 PM   #38
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What leaked out? Color? Feel? If you're still seeing some, put a pan under it to catch it so you can see what it is.
Fluid level in the coolant expansion tank?
What's the fluid level in the trans?
What's the fluid level in the power steering system? (It uses ATF, so a mech may have thought it was the trans.) The high pressure line runs in front of the steering rack, so it could have taken a hit.
What's the fluid level in the brake system?

The cooler for the trans is built into the radiator. Rads are prone to easy damage, so I'd take a good look there.
There is no oil cooler (from the factory) on a 330. It just has the transmission fluid cooler that's built into the radiator.
There's also a cooling loop up high for the power steering system.

You can inspect the underside of the car yourself - all you need is a jack, a couple of stands and some basic tools to unscrew/unbolt the under-pan.
It's exactly the same as changing the oil for access. (There are videos)
There's a secondary pan to the rear that I'd also pull. Both are plastic.
The tools will pay for themselves in a couple of oil changes and don't require much space to store.

Once it's up, take a good look and see what shows damage.
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Old 05-22-2017, 11:53 PM   #39
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i had some shop change my OIL on my 330 ONCE and they put the drain plug in so FN tight that it cracked the pan when i loosened the bolt the next time around.. sheared the bolt right off.. and cracked the pan..... those things are aluminum i believe.. easy to damage.

that cost me big bucks.. was not happy..

i hope for your sake its not the oil pan.

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Old 05-23-2017, 08:42 PM   #40
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Sorry, I'm on my phone but I started the engine before it got towed.

The engine's fine but when it put it on reverse I got nothing so I put it back in neutral and pushed it to the tow truck.

I find it odd too that he can't pinpoint the leak. He said it's the torque converter seal.

Thanks
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