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  1. Bmw F02 850 Li. Battery drain, No sleep mode

    BMW 7 Series - Tech Talk For All Gen Of 7 Series
    Gentlemen Greetings Each time the car parked for two days it drains the battery... During diagnostic session Everything is normal as should be.. Except the CAS.. Reporting : 930741 Output, Terminal 15WUP Short circuit to positive. 930743 Output, Terminal 15WUP _RS short circuit to...
  2. Need 850 steroe amplifier repair help

    BMW 8 Series Forum - Technical Talk on the BMW E31
    Hi chaps, For the amplifier fitted in some 850s, Blaupunkt, p/n 7 607 666 040, does anybody have any or several of the following: 1. Repair/service manual 2. circuit schematic (even hand drawn and partial might help) 3. a dead one they don't use that I can have a look at 4. the value of R190...
  3. 850 csi ECU needed

    BMW 8 Series Forum - Technical Talk on the BMW E31
    Hi, i’m looking for these module for my 850csi: 1. ECU engine Part no- 12141429769 (2 units) 2. EML Control unit part no- 12711403275 Many thanks!
  4. 850 CSi drain battery + cluster problem.

    BMW 8 Series Forum - Technical Talk on the BMW E31
    Hello! I own a 850 CSi from -93 build 1992-10-02 that have some problems i cant figure out. First of all the car drain the batteries. I hooked up the multimeter and after 16 min it goes down to 0.4-0.3 amps and from what i know it should be 0.05. When i pull fuse number 1 in the engine bay...
  5. 1992 850 - Inspection Light Re-set

    BMW 8 Series Forum - Technical Talk on the BMW E31
    Hi Guys, I know its on this site somewhere, but I just can't find. Could someone please remind me how to reset the inspection light. Rich
  6. E31 850 brakes ASC-T

    BMW 8 Series Forum - Technical Talk on the BMW E31
    Help has anyone had there brake hydro unit asc-t 34511163086 refurbished as mine has started to leak have checked all brake pipes fittings and it's not leaking from them seems to be from the cylindrical block may be able to see more when it's removed Thanks for any help
  7. 850 csi EWS DME re-sync using DIS

    Auto Electrical Forum
    Hi just wondering if it's possible to re-sync the ews and dme using DIS? Have an 850 csi that has been sat for 6 years and has lost sync and maybe even the coding between them so the car won't start? If so I should get a copy of DIS tomorrow if someone could do a step by step guide. I...
  8. Neglegted 850 csi

    BMW 8 Series Forum - Technical Talk on the BMW E31
    Neglected 850 csi Good afternoon all. I'm new to the forum so a brief intro... Had a few bmw's over the years and now own a tuned 535d but that's not why I'm here. Unfortunately 6 years ago my dad had to put his 850 csi into storage, one thing after another and the bmw got forgotten about. I...
  9. 1992 850 E31 - Another Re-build

    BMW 8 Series Forum - Technical Talk on the BMW E31
    I've been quiet as I'm fuming. In Oct 2016 we fitted a replacement V12 (see pic) as the previous one had multiple failures due to sheered cylinder head stretch bolts. It ran beautifully for just shy of 11 months then slowly misfires crept in, mostly on start up. It's now undrivable due to the...
  10. 850 E31, intermittent lack of power

    BMW 8 Series Forum - Technical Talk on the BMW E31
    Started up, (engine not cold) tick over a little bit low, drove for about 100 meters and could feel a definite lack of power, then a sudden judder and trans fail alarm. Stopped and turned off engine and restarted, all fine. What went wrong, any clues where to start, thanks.
  11. Replacing thermostat 850

    BMW 8 Series Forum - Technical Talk on the BMW E31
    Hello, Car's overheating, getting very close to red on gauge. I was hoping it was low coolant, air bubbles. After looking closer bottom hose on radiator doesn't get hot when heater hoses are near boiling, so hoping it's the thermostat stuck, I've bought a new one. Car's currently miles from home...
  12. 1991 E31 850 Rebuild

    BMW 8 Series Forum - Technical Talk on the BMW E31
    Hi all, thought it time I posted my new project! Having now run out of things to do to my 840, I couldn't resist buying another project. I'm sure many saw it on ebay and thought 'who would' but I did have many of the parts missing such as doors, wing, sunroof cartridge, full interior,ecu's...
  13. E31 850 CSi Exhaust Back Boxes Available

    BMW Parts for Sale
    Hello This original exhaust system is on my '94 850CSi vehicle number CC88076. It will be replaced shortly. The part numbers are: Back box left 1316196 Back box right 1316199 The outer casing of the down pipes has been removed. The downpipes are rusted through. Collection would...
  14. E31 M70 850 I only firing on one bank

    BMW 8 Series Forum - Technical Talk on the BMW E31
    Just got home yesterday after being away for a month and the 850 is starting fine, but will only fire on 6 cylinders, I know there are probably numerous possibilities, but can anyone give me a pointer on where to start troubleshooting. Is there anything that can be easily checked, for instance...
  15. 850 Trans fail

    BMW 8 Series Forum - Technical Talk on the BMW E31
    I left the 850 for a month connected to my CTEC charger, as I normally do, but the charger packed in and when I came home both batteries were totally discharged. I recharged them both, but when I stated the car I very soon had trans fail alarm. The RPM on idle was low compared to normal and when...
  16. e31 850 1993 - ASC light on

    BMW 8 Series Forum - Technical Talk on the BMW E31
    Help Has anyone had trouble with ASC light coming on (top of cluster) As I have been rebuilding car for MOT over the last 6 months sometimes when starting her up the ASC light wont go out, now it wont go out at all. last problem to fix so I can get her back on the road. I have replaced all...
  17. 1993 850 CI, a keeper or not

    BMW 8 Series Forum - Technical Talk on the BMW E31
    I am in a dilemma whether or not to keep my 850 CI, I have owned it for 10 years now and barely use it. Although I keep it serviced, MOT'd and taxed, the miles I put on it are negligible. These machines are meant to be driven, and to be honest I do feel guilty neglecting this. My question is...
  18. E31 850 1992 - 8Tech to the Rescue

    BMW 8 Series Forum - Technical Talk on the BMW E31
    On Saturday I made a comment on this forum that my 850 couldn't be running better, well that killed it. Upon smelling petrol, a quick peek under the bonnet and I could see fuel squirting out from one of the rear fuel lines. Less than an hour later everything was back together with new hoses and...
  19. E31 850 1992 - My Last Drag Race

    BMW 8 Series Forum - Technical Talk on the BMW E31
    Hi Guys, this was the final test of all the hard work. Ran it down the drag strip and my best time was 15.11 @ 96.77mph (crossing the line in 2nd gear lol) I wanted a 14.99 but it was never to be, so time to quit. The video attached was of another run during the day. I'm now retired from drag...
  20. 1992 E31 850 AC Schnitzer Electronic Front Shocks

    General BMW Discussions
    First time posting so hope I do it right! My much loved 850 has developed a fault with one of the front shocks that needs replacing / refurbishing (is this possible?) Unfortunately I don't have the cash to just get them from BMW - does anyone know where I might get some replacements or have any...
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