HW 3.1 stock spec issue /fault

[fidspeed]

hi gurus
have an almost new HW stock spec in my sons snoring car and it keeps dropping from boosted into "blinky" mode if you stop and turn back on it "reboots" into boosted mode again for a while

tried different motors and sensor leads even different cars and radio gear

my only other idea is if thermal trip in esc settings is causing it (although motor is not particulry warm
someone mentioned trying a 4 pot capacitor set instead of standard two pot supplied with ESC

any ideas fellas ??

thanks dave