2004 BMW 760 N73 "A big mistake"

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AndreyB
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2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Play stupid games - win stupid prizes. Let's see how this $975 winning bid + $807 fees vehicle would turn out.

VIN WBAGN83454DK10828
http://bmwfans.info/vin/decoder?vin=WBAGN83454DK10828
https://bimmer.work/vin/d4b749a96ec7f5e28b953a8a8cbe5e040/

https://www.patreon.com/rusefi because https://www.patreon.com/rusefi is very relevant here.


ECU pinout spreadsheet

https://github.com/rusefi/rusefi/wiki/BMW-e65

https://github.com/rusefi/rusefi/wiki/BMW-N73
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mck1117
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Re: 2004 BMW 760 N73 "A big mistake"

Post by mck1117 »

does it do burnouts?
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Re: 2004 BMW 760 N73 "A big mistake"

Post by stefanst »

I'll get the turbos. Because more turbo more better.
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Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Fun BMW fact: BMW (and Mini) uses quite an unusual thread size/pitch for towing hook attachment. There is a chance that the only compatible vehicle is Kia Stinger.

Towing dolly & motel booked, Kia Stinger tow hook in the trunk. Plan is to drive to CT on tomorrow and hopefully touch my big mistake this Wednsday.

Please send your condolences.
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Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Car does not smell inside - probably not a flood.
Inside coolant reservoir there is low level of clean coolant - not milkshake.
Car has key, key lights up dash, zero reaction on start button - no cranking no dash blinking.

That's all I know about this car, I've left it at Manny's one hour north on NYC - Manny is a great mechanic/shop owner/Lemons racer. He will look at this car next week.

I am home in one piece which is the most important part of this trip.



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Re: 2004 BMW 760 N73 "A big mistake"

Post by puff »

so beautiful! congrats!
"theft prevention standards"? may be that's the root cause of zero reation on start button?
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Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

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Kudos U-Haul for painless damage handling.
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Re: 2004 BMW 760 N73 "A big mistake"

Post by mk e »

Whoa, there!...you're not planning to drive a V12 car are you? I thought there was an understanding in the club that these are projects, to talk about, share pics of and such but never actually drive? Nobody else is driving their's........

:lol:

Nice find...but now I feel like the pressure is on to to also make mine drive :)
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Re: 2004 BMW 760 N73 "A big mistake"

Post by pk386 »

AndreyB you are crazy!

but in a good way :)
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Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

$300 for a fancy battery plus one hour labor to install it and the engine is running!

It has dumped a lot of power steering fluid out so PS pump is strong!

It does not go into any gear and while there is communication with some modules, there is no communication with many modules like ABS and TCU.

I've asked Manny to fix PS hose and to invest few more hours into this big mistake of mine to see if he can get it to drive at least at 5 miles per hour. Next call next Friday :)
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Re: 2004 BMW 760 N73 "A big mistake"

Post by bill »

you RAWK!
Did Manny send you the BMW computer printout of the good/bad/ugly?
We would like to check it out...
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Re: 2004 BMW 760 N73 "A big mistake"

Post by puff »

a rotten can-bus wire? you'd need to invest in a cable tracker to investigate such issues...
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Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

puff wrote:
Fri Oct 23, 2020 8:00 pm
a rotten can-bus wire? you'd need to invest in a cable tracker to investigate such issues...
At the moment I am investing in Manny and I hope he has relevant skills. With engine running I have motivation to invest a bit of $ into the car.
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Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Title has arrived - previous owner got the car in 2013 with 87K miles and a 5 year lean with BMW Bank of North America. Hopefully that roof and headlight damage was enough to total the car at 140K miles and hopefully the car was somewhat drivable prior to the accident.

mechatronic is EGS (computer) and valve body plate. Here are removal instructions:

1) remove oil pan/oil filter (two dozen torx I assume?)
2) Unlock and disconnect the round electrical connector from the back of transmission. https://github.com/rusefi/rusefi/wiki/oem_docs/Bmw/2003_7_Series_e65/6_speed_sleeve_replacement.pdf
3) pull tan tab inside transmission to unlock sleeve https://github.com/rusefi/rusefi/wiki/oem_docs/Bmw/2003_7_Series_e65/6_speed_sleeve_replacement.pdf
4) Pull out the sealing sleeve without twisting or rotating motion. https://github.com/rusefi/rusefi/wiki/oem_docs/Bmw/2003_7_Series_e65/6_speed_sleeve_replacement.pdf
5) remove 7 long and 3 short T40 bolts (do not remove smaller T bolts
6) mission accomplished, you should have mechatronic (computer and valve body plate) in your hands?
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Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Status update: non-original and melted due to contact with exhaust wiring was found between engine bay and transmission. Investigation slowly progresses.
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Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Status update: more broken wires were found, also fuse box 1-1394367-1 seems to be a problem.
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Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

AndreyB wrote:
Thu Apr 08, 2021 3:44 pm
fuse box 1-1394367-1 seems to be a problem.
Nope, 1-1394367-1 replacement did not get the car moving.

First DMV visit and a title drama came up! Working with autobidmaster to figure that out.

The funniest thing? According to Copart this 760LI is green.
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Re: 2004 BMW 760 N73 "A big mistake"

Post by JRockland »

OMG that is the best thread ever. I'm following.!

It is like a good old M73 BUT with soo much more electronic and problems...... I actually wish I could help, I love those projects..

hmm before spending any money on the tranny, check the valve seals on the engine, they usually go bad and it is really expensive to fix..

Transmission is linked with EVERYTHING.. so check any bad connection and rusted grounds..
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Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

TL,DR: next step is to replace coil packs, there is an opinion that this would help transmission. Bear with me:

760IL is now with Sergey at shop #2. Those hacked wires which were melted on cat and maybe replaced? Those were two CAN networks. Sergey says OEM CAN wiring is totally fine and he is removing those hack jobs wires.
Apparently there is CAN comms with trans as long as engine is not running. Once engine is running, and Sergey says it's misfiring, CAN comms is lost.

Sergey says he has seen broken coils emitting magic and killing CAN like this.

In other news: variable valve timing module is damaged or full of water, it has just burned a new set of 40A variable timing fuses. $100 replacement ordered.
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Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

And now MORE news:
Ок good news and bad news.
Good news, trans drives, was missing 6 quarts of fluid, we topped it off and fluid will need to be replaced... but good news transmission shifts, took it around the block, has Christmas's tree of lights, but works.
Trans pan leaking and I think the plug is leaking as well. Need that vvt module, to continue...
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Re: 2004 BMW 760 N73 "A big mistake"

Post by blundar »

I nickname this car "sauerkraut"
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Re: 2004 BMW 760 N73 "A big mistake"

Post by stefanst »

blundar wrote:
Tue May 18, 2021 10:45 pm
I nickname this car "sauerkraut"
Sauer = pissed, unhappy.

So, a pissed German? (not the English-English pissed)
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Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Happy movements

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Re: 2004 BMW 760 N73 "A big mistake"

Post by blundar »

stefanst wrote:
Wed May 19, 2021 3:23 am
blundar wrote:
Tue May 18, 2021 10:45 pm
I nickname this car "sauerkraut"
Sauer = pissed, unhappy.

So, a pissed German? (not the English-English pissed)
yep... We can rename it when it's less pissed
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Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

There is good and bad news ...
The Vvt module came, but then it started throwing camshaft codes, maybe there was a problem with the chain... but there is also a lot of mouse shit under the hood ... so maybe the mice ate something ...
Also on the raise, both rear bags leak, both sides fall every day ...
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Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Air spring strut
37 12 6 785 535 left and 536 as right
trying to understand if that's with or without EDC
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Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Bill says "Big Blu Micro Leak Detector (1 Qt.)" for all kinds of leaks
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Re: 2004 BMW 760 N73 "A big mistake"

Post by Simon@FutureProof »

I believe it is with EDC as those strut part numbers are listed as with EDC.
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Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Two months and 42 calls to AutoBidMaster, Copart and Utica National Insurance and I now have limited power of attorney signed not just by one but each of the two owners.

DMV appointment on Monday. Plan is to get at least Salvage title in my name.

Next open question salvage inspection. The nice lady on the phone has informed me that whatever was reason for salvage has to be repaired to "showroom condition". I would not get rebuild title until I repair the damage.

Primary damage was top/roof. I believe that we are talking about this dent. I have a feeling that inability to repair the transmission played some role in the decision to total the vehicle due to the dent on the roof.
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Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

I now officially own this vehicle. It's officially a salvage due to roof damage. Here are better images of what has totaled this amazing vehicle.
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