I just need car radio code without serial number

The car is misfiring only coil 1to3 that is working number4 did not have current at all i tried change the coil it was the same thing, I tried to diagnose the car the machine didnt show any fault i re… 

Even though the four coils are working, coil number 1 has no spark. I was told this has to do with a computer failure. The strange thing is that sometimes it works and others it does not. I've already… 

Where is engine number on my ford focus titanium 2010?

I need the number for a front wiper fuse for 2005 Ford explorer eddie Bauer

I need to put a new catalyst on my corolla 98 but i need the family engine number and i cant find it under the hood does anyone know that number ?