I have a 93 loyale, MT, 4x4 with 153000 miles. Getting EGR valve control, vehicle speed sensor 2, IAC valve, and EVAP purge valve codes but only get that hesitation when engine's cold. I'm thinking has to do with IAC valve not functioning properly. Once RPM's are above 1500 does fine when cold. Smooth acceleration at normal driving temperatures from a stop or while driving.