Hello Rev,
I have a 1985 318i and I am not getting power to the fuel pumps. I Found that I had No Power to the fuse that activates the key on power at the main relay (fixed). I am curious to know if there is cranking power at the main relay that sends power to the pumps. When I turn the key on I have 3 positive powered wires at the main relay; therefore, does that mean I am back feeding power somewhere, or is there supposed to be three hots before cranking?
I am also wondering if someone has a reference to the fuel pump wiring as I find nothing in the Bently unless I'm looking past it (probably)? Can someone provide a link to the pinout of the main relay or where it would be at in the Bently?
I know there is cranking power that comes from somewhere, just not exactly if it comes from the main relay or the ignition?
All Grounds have been checked and are intact. The Bently doesn't really cover this fuel system well as far as a specific fuel wiring diagram.
Any ideas or help would be greatly appreciated as I have lost the path and not sure where to go from here.
Thanks.
I have a 1985 318i and I am not getting power to the fuel pumps. I Found that I had No Power to the fuse that activates the key on power at the main relay (fixed). I am curious to know if there is cranking power at the main relay that sends power to the pumps. When I turn the key on I have 3 positive powered wires at the main relay; therefore, does that mean I am back feeding power somewhere, or is there supposed to be three hots before cranking?
I am also wondering if someone has a reference to the fuel pump wiring as I find nothing in the Bently unless I'm looking past it (probably)? Can someone provide a link to the pinout of the main relay or where it would be at in the Bently?
I know there is cranking power that comes from somewhere, just not exactly if it comes from the main relay or the ignition?
All Grounds have been checked and are intact. The Bently doesn't really cover this fuel system well as far as a specific fuel wiring diagram.
Any ideas or help would be greatly appreciated as I have lost the path and not sure where to go from here.
Thanks.
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