I ve done some checking on the electrical parts of my car and it seems that a have a bad relay only thing i dont know what is there. Is on the left side of the car in the back seat behind the safaty belt panel. I think is either the fuel pumb controller or some kind of an amplifier. Anyone knows what it is?

Silver box with cooling heat sinks on ? will be the fuel pump controller.

Typical faults will be poor idle/ erratic when cold, poor pick up when flooring the pedal caused by low or intermitent output voltage to the fuel pump.

 

By removing and taking apart faulty components will show up on the board as burnt or blackened, there are a series of resistors in the middle section that fail, often just a dry joint that needs resoldering.

 

Be cautious though as the very same symptoms can be caused by other factors so as is often the case identifying the actual cause can be troublesome, borrowing a good known one is a good idea.

 

Jeff TT

Yes that will be Jeff. I think it's the relay's fault as when i disconnect the negative pole and put it back it makes a tick tick sound.