I have 90 model brumby with an ea81 motor. When the pump is connected with the standard wiring (under the right hand side door from the pump to the battery) it does not pump any fuel.

 

When a wire is connected directly from the battery to the wire under the right hand side door the pump will start working.

 

I'm not sure where the wires go once the move forward past the door. Is there a wiring diagram or sorts somewhere to solve this? or would anyone off hand know?

 

Cheers

There is a tach pulse sensor that will not allow the pump to run unless the engine is being cranked. There may be nothing wrong with your pump wireing at all - have you verified that you in fact *do not* have fuel or may it be the case that you don't have spark/ignition?

 

GD

Though probably not recommended, I had the same problem and circumvented it by grounding the NEG terminal on the pump directly to the mounting bracket. I'm sure I disabled some safety function though (ie turbo fuel cut out, etc)

 

http://www.ultimatesubaru.org/forum/showthread.php?t=103540

There is a tach pulse sensor that will not allow the pump to run unless the engine is being cranked. There may be nothing wrong with your pump wireing at all - have you verified that you in fact *do not* have fuel or may it be the case that you don't have spark/ignition?

 

GD

 

Will need to check what it is actually doing. When the pump is connected straight to the battery I can start the car and move it around the yard. So I would think it is pumping some fuel around (only put the motor back in last weekend).

 

Will check and post what I find if I can't get it working.

 

Thanks for the replies.

The fuel pump relay should be checked.

I recently had the same problem, and in my case it was the Fuel Pump Control Unit. (Black box located next to the hood release under the dash.)

 

http://www.ultimatesubaru.org/forum/showthread.php?t=99877&highlight=FPCU

 

I also replaced the fuel pump in case the old one was drawing too much current and burning out the transistor. The old pump pumped well when connected to the battery, but that didn't really tell me how efficiently it was running. The car runs like a champ now.