I have a 2004 Mazda rx 8 6 speed it's been running fine. I got in my car and it won't do crap the lights cane on but nothing when I tried to start it. I have put a new starter on it and still nothing. The weird thing is we pooped the clutch and it started but no acceleration then took my key off and out the engine still running lol. So I had a friend put it on scanner and security things showed up and we fixed that then the relay switch was bad fixed that. Then it ran fine till this morning it won't crank or nothing. Can someone HELP me please

 

Welcome! We might need a but more information about what security things and which relay switch were fixed. Does it make a loud click when you try to start it? If so, charge up yout battery and clean the battery terminals and make sure they are on snugly. Alternatively, see if you can start it with jumper cables from another car. If that doesn't do it, get that scanner hooked up again and see what the car thinks the problem is.

 

I would make sure that you have a good battery. What is your B+?

If you replaced relay maybe you have a wiring issue that killed the battery

 

Check your relays and fuses.