My brothers '04 rx8 has been off the road for a little over a year now and after trying to start it today it didn't seem to want to turn over. It would crank for a second then stop altogether only to hear clicking coming from the fusebox. At this point I checked the fuse and found that the EG1COMP2 fuse had been blown, so I replaced it and tried again only to blow that one too. Read a post about disconnecting the o2 sensor, did that and the fuse still blew. I don't know why this is happening, I figure there's a short. Could it be a bad ground somewhere ? Please help, I have 2k saved up to use on repairs but I'd much rather a solution without taking it into the dealership. Would this be able to be cheaply fixed by myself or a mechanic ? Cheers, Dillon

 

I would check the wiring harnesses for chewed spots before I did anything...then follow the circuits for that fuse until you find the short ...

 

I had the same problem a while ago and it was caused by a short on the harness

 

short in harness sucks...

Start by looking everywhere that a wire is not in the bundle, at junctions, or any place you can see a wire. Good luck.

 

Looks like the EGI2 fuse feeds the :

Evap pump
Fuel pump speed relay
Power to MAF
Fan relay
Air Pump solenoid trigger

Do you have any CEL's? If the evap, MAF or air pump are not working you should get a CEL

You could pull the relays one at a time and see if they stop the fuse from blowing...and then you would know which circuit to chase. It could also be a relay that is shorted out...you might want to check them as well.....that would be a likely failure point as well

There is no easy way to do this...you have to be systematic and organized and check all the wires. At least it is always doing it ...it would be way worse if it did it intermittently

Do you have the electrical schematic?