hey, does anybody know where I can find any type of protection for the computer (ecu) such as a relay or fuse? thanks
2004 RX-8 4-port

 

The ECU is behind the IGN and/or Room fuse I believe. How about you describe the problem you're having and we figure it out from there? It's probably not a fuse.

 

the car wasn't starting and I checked coils plugs and the fuel pump so I went on to check the fuel lines and those were fine and i got to the injectors but i noticed they weren't receiving a ground signal and wouldn't open which comes from the ecu i'm guessing that's my problem and why i'm checking the ecu.

 

So you're getting spark but not fuel injection?

 

yes I took apart everything that is needed to remove the injectors and i checked the injectors on their own and they work but the ecu isnt sending a signal when cranking

 

ESS signal?

 

im not to sure what that is or how to check it

 

Equivalent to crank sensor
. Its on the front of the engine to the right of the main pulley ...looks like a small silver cylinder. Is it plugged in?
Give us some history on the problem

 

yes that is in i actually took it out to check it and plugged it back it in but the problem persists, i took off some parts to change a sensor because the would idle until warm and then shut off so i changed the water temp sensor and when everything was put back together it didn't even turn on so that when i started checking everything and i got to the injectors which seem to be the problem