As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE WOULD NOT OPERATE NORMALLY IN COMPUTER MODE. ENGINE SPEED WAS NOT BEING REGULATED PROPERLY BY FUEL CONTROL TORQUE MOTOR ENGINE OPERATED NORMALLY IN MANUAL MODE. OVERHAULED FUEL CONTROL WAS INSTALLED AND ENGINE OPERATED NORMALLY IN BOTH COMPUTER AND MANUAL MODES.