Need help, car has no electrical power
 

Im stumped on this, it's a 2005, I just got the car back from getting rebuilt motor. I had other issues due to the car sitting for almost 3 years. So I'll go down the list of parts that have been replaced or tested.

Replaced window motor
Replaced Alternator
Replaced all coils
Replaced coil bracket
started tested good
battery tested good
120amp main fuse shows intact
15amp engine fuse shows intact
STOP fuse shows intact
found cut wire in third brake light and fixed it

After getting the motor replaced the EPS hasn't worked except once randomly. I cleaned all connectors as requested in other forums with no success. I had two coils get hot and melt which blew the 15amp engine fuse and shut the car down. After replacing the fuse and coil I let the car idle for 10 minutes and rev'd it a little. I waited a couple minutes and wanted to test a hot start. So I turned it off and waited a minute then turned the key and lost all power.

I know it's obvious, but that looks like a bad battery and/or bad post connections.

Try a boost from a known-good vehicle/battery - if it starts, "there's your sign".

Engine bay fuse box in the right fron corner, there is a 120 amp fuse where the wires come into the box.

https://www.rx8club.com/series-i-tro...-wrong-244901/


https://www.google.com/amp/www.autog...x-diagram/amp/



.

Had the battery tested and they said it was good. I already checked that fuse and it doesn't appear blown.

Boost or bust....
 

You can rely on that test, or you can actually get your motor started - your choice....

Lol, I'll pick up a new battery tomorrow. If it's that I'm really going to be annoyed since I have taken so much apart on the car to find an issue.

Thanks again as that was my problem. I figured I ruled the battery out with 3 tests from two different autozones.

And Thanks to you, for getting back to us with your solution!

Glad you got your baby back up and running! Great success story. Its nice to see people not give up on older cars. I have a few friends with 8's who are planning to sell or junk theirs when they run into their first serious problem.