Which one is fuel pump relay on e32 750iL 1992 ?

[krtica]

Hello!
I am having some problems with my fuel tank leaking, i need to disconnect the fuel pump relay so i can drive on TNG until i fix the gasoline tank. I dont know which one is the fuel pump relay.
There are 10 cubes and can someone tell me which one is it?
Thanks!

[bmwdirtracer]

Let's teach you to fish for yourself, because it's worth much more than just this single answer.

GO TO:
http://wedophones.com/Manuals/BMW/19...g%20Manual.pdf
This is the factory wiring diagram and electronics manual for your car.

After it loads, scroll down the list on the left, to group 7000 - Component location charts
Now, scroll through those pages until you come to "K" group, which is the relay group. Find fuel pump relay.

AHA! There are 2 of them! They are referred to as K210, and K211. (You have two, because like everything else on a 750's engine, each half of the engine runs as a six cylinder engine, so you have two computers, two distributors, etc.) You'll see they are listed in the right column as having Component Location views, on page 7100-24, view 01. Flip back to the left column, click on 7100 (Views), go to page 7100-24, look at view 1.

And there they are, above the right front wheel well in the aux relay box, just like the picture showed.

[krtica]

Thanks for answer!
Now i found third pump relay its on page 7100-01 named K201. Maby it's that one for the M30 engines or the M70 too have it?

[bmwdirtracer]

No, just the two on the far right of the aux relay box.

[shogun]

not all 750 M70 have the fuel pump relays on the far right of the aux box, up to 1988 they are in the middle, K210, K211, http://bmwe32.masscom.net/sean750/fu...gFuelRelay.jpg
from 08/1988 built year K210 and K211 are farest right http://www.e32-schrauber.de/bmw/s-relaisbelegung.htm
Relay Fuel pump 13631725654 1725654, Siemens 5WK2222 it is a black relay on my 11/88 750 and on top is written BenzinPumpeRelais = fuel pump relay, do not mix that up with the DME relays.
Only used on E32 750, BMW Relay (Si121 09-89) - BMW 13631725654 Pins 31, 50, 1 , 87b, 87, 15, 30. https://recyclebmws.com/bmw-e32-7-se...654/#gallery-3

alternative: STANDARD IGNITION RY-1663 - Intermotor Fuel Pump Relay, STANDARD MOTOR PRODUCTS RY1663 , price abt. $100,--
The fuel pump will only run when ignition is in position 2 and it gets a signal that ignition sparks are coming.
31
50
1
87b
87
15
30
Terminals definitions http://www.e38.org/understanding%20e...20diagrams.pdf