will faulty crank sensor shut off fuel pump?

[jeeper31]

Originally Posted by Gelbster

When the CPS fails, I think the ECU 'thinks' the engine is not rotating. Therefore there is no need for any fuel.Therefore the fuel pump relay gets no signal.
CPS is not very expensive. About $90 in USA. The part number for mine(but verify for yours) is:
BOSCH - 0261210204

But doesn't the fuel pump run when you put the key in the on position (not the position to start the car) ?

[JFP in PA]

Originally Posted by jeeper31

But doesn't the fuel pump run when you put the key in the on position (not the position to start the car) ?

Yes, but only if the static fuel pressure is low; otherwise it does not run which is why you have to pull the relay and jumper the system to make it run on purpose for testing.