Quote Originally Posted by Yendor View Post
So you have connected a wire to supply direct power to the fuel pump (green wire with a red trace) at the fuel pump control unit and it doesn't play up?. If so, this would eliminate any possible bad connection at the fuel pump or in the earth side of the fuel pump.
Yeah, it appears the connection(s) between the Fuel Pump Control Unit and the fuel pump is fine.
I drove it with the direct connection from the Fuel Pump Control Unit for couple of days now without any dramas.

So, the problem is between FPCU & the battery power line to it(I think).
Either FPCU is faulty or the connection to it from the battery/ignition.

I guess the next step is to check the power to the FPCU and make sure all the incoming power lines
to FPCU are properly powered when ignition's ON.