Need some help.

[Mdanehart]

I have a 2013 FLRX with S&S 124 and Procharger controlled via Thundermax.
The machine ran freaking awesome until today! Would not start, everything turns on, lights, instruments lights and fuel pump winds up.
i checked all fuses, ok, battery ok, fob battery ok, relays ok, i get spark, Thundermax code shows Low ACR.

BUT when I spray starting fluid in the rear cyclinder the bike fires up! But when I shut down it requires starting fluid again.
What is the next step?
Thanks

[rigidthumper]

Sometimes the check valve retaining balls dig into the fuel rail chrome cover enough to reduce fuel flow- try pushing up on the fuel rail where it goes into the check valve, at the tank outlet, and rotate the chrome cover 1/8 turn, then try again. 

[Mdanehart]

Thanks,
I give that a try in the morning. Running out of options.  Trying to secure a fuel pressure gauge to check the pressure. Since the engine runs after the squirt of starting fluid would that resolve the fuel pump working ??

[Mdanehart]

Fuel pressure indicated 60 PSI.
Leaning toward Thundermax issue.

[jmorton10]

Give them a call, their tech support is awesome (at least it was a few years ago)

~John

[Mdanehart]

All good. After all the troubleshooting the problem was a glitch in the software of the Thundermax. Thanks...