So I installed Rx8Performances fan control mod on my rx8 as the instructions said and replaced fan relay 1&2 with the supplied relays. I drove my car for about 10-15minutes and the car got up to temp, about 80C-85C and the fans kicked on. Shortly after that,(couple minutes maybe) the car suddenly died while driving when I went to shift gears. I pulled over on the side of the road and turned the key. The car turned over but would not start.

When turning the key to on, the fuel pump did not prime & the ignition relay clicks rapidly. I uninstalled any electrical connections from the fan control mod and reinstalled the OEM fan control relays and tried to start it, still crank no start. So I disconnected my battery and let the car sit for about 10minutes and retried to start it, still crank no start. I swapped the ignition relay with the headlight relay and it still clicks rapidly, so relay is fine. I popped the fuse box cover bit off and inspected underneath the fuses and everything seems to be in order, nothing touching or out of the ordinary.

The car has brand new(2,000km~ old) NGK ignition coils and sparks plugs(Both OEM part #s) with ACDelco spark plug wires. The battery is on the newer side, just a couple months old, and tested to 445/530CCA with 12.3V. Apart from the fan control mod, everything else is stock.

 

Ever figure it out?

 

Yeah turns out I installed a fan temperature control mod from rx8performance & it kept popping my injector#1 fuse as well as I had a gauge screen plugged into my obd2 port that was really confusing the ecu