Solenoid for 1994-2003 Ford Powerstroke 7.3L If you are having hard starting issues, injectors not passing the buzz test, this may fix the problem. This solenoid can be installed without removing the injectors from the engine. Test the resistance of each solenoid to find bad or failing solenoids. Any solenoids that test open circuit (infinite resistance) are bad. This solenoid usually fails causing the injector to not run or fail the buzz test. Also fits INTL DT444, 466 530. Fits ALL codes AA, AB, AC, AD, AE-BA, BD, BE, BI, BN, BJ