M30B30 Not starting

[hh83]

Hello everyone, i got a 730i 1987 model. I'm having trouble with power to the fuel pump. I get power with wiring between pins 30 and 87 where the fuel pump relay is and also í get a power for the the relay but when i put the relay in the socket the power gets to 0V. So its like when the var gets resistance in the relay he shuts of power to the fuel pump relay. I changed the fuel pump, the fuel relay and the motronic computer. Nothing. I got the car started byr wire between pin 30 and 87 on the fuel pump relay but car did not run well, like he was not running on all cylenders. Is it possable it could be the crankshaft sensor og some other sensor?

[shogun]

Did you already check the crankshaft position sensor? Between PIN 1 and PIN 2 must be a resistance of 540 +-10% Ohm. Between PIN 3 and 1 or 2 an infinite resistance is measured.
the plug pins are shown here http://www.e32-schrauber.de/bmw/date...or_Stecker.png
CPS on the M30 http://www.e32-schrauber.de/bmw/date...Sensor_M30.png

[shogun]

Moved to E32 forum