First of all thank you all for all the tips and safety messages, I found that it's kind of tough to replace the pump not just for the lack of tools if not mostly with the risk of fire at home, I decide to take it to the garage they succecfully replace it in a couple of days, the job was not unexpesive at all tough, the good think is that the car is running now, but it's very important to know where are located those relays to be ready to replace them once in a while.

Gracias