The wire to fuel pump is not having current I therefore bypass it. Can a car consumption increase if ecu is bypass?
Whoa. I believe that car is fuel injected and fuel pump pressure is a big deal. Now here's the issue.
Older fuel injection cars (1980's and early 1990's) had TWO lines/hoses running between the fuel tank and the engine. A fuel supply line and a fuel return line. The pump ran all the time and pressure was controlled on the fuel rail at the engine. Excess pressure was controlled by letting some fuel return to the fuel tank. The problem with this was running the pump all the time doesn't help your fuel economy AND it generates fuel vapor inside the gas tank. If that vapor escapes to the atmosphere that's really bad for planet earth.
Newer vehicles have ONE fuel supply line. Fuel pressure is controlled by the pump. The way to do this is with a Pulse Width Modulated (PWM) controller. The PWM system is controlled by the engine computer and allows the fuel pump to put out partial load. There is no return line from the engine back to the fuel tank.
This PWM thing is s big deal. I'm guessing you have a one line system and your fuel pump control module (with its PWM internals) has become defective. You need to replace that module. Running the pump 100% would be bad. Really bad. I'd worry you start breaking fuel injectors. Additionally the pump won't last very long, not very long at all.
If you do have a two line system , and you can see a fuel pressure regulator on the end of the fuel rail then you are probably okay. The pressure regulator is a metal can about the diameter of a coke can and about 1/4th as tall as a coke can. The fuel tank return line is directly attached to this can.
Let's us know how the troubleshooting and repair goes.
Yes, although I don't see how a car is going to run with the ECU completely bypassed, I'm guessing you have made some sort of modifications. The ECU is a computer which calculates the right fuel-air mixture for your engine based on sensor date like air temperature, air density, engine operating temperature, exhaust gas temperature, and other factors. If the ECU does not have the information it needs to make that decision then the mixture it chooses will go for a default mix which is likely to work in a large variety of situations, and is often on the rich side. A rich mixture means higher fuel consumption, it also can foul your plugs, ruin a catalytic converter, and cause other problems.