EXO2030+375is a 42-second X-ray pulsar orbiting a Be star every 46 days. Previous work using epoch-folded frequency searches over 1-day intervals of BATSE data [1] indicated that EXO2030+375underwent a 2.5 year period of quiescence from 1993 September-1996 March. Improvements in the search method that reduced systematic errors due to (1) aperiodic noise from the nearby black hole candidate Cyg X-1 and (2) sources undergoing Earth occultation, have allowed longer time intervals to be searched, hence increasing BATSE’s sensitivity. Using the improved method with 4-day intervals, we detect EXO2030+375near most of its periastron passages during 1993 September-1996 March and for most periastron passages during BATSE’s 9 years in orbit. Earth occultation measurements in the 20-100 keV band, selected when Cyg X-1 was below the Earth’s horizon and epoch-folded at EXO2030+375’sorbital period of 46 days, also indicate that EXO2030+375was active for most of the mission. We will present histories of EXO2030+375’spulse frequency and pulsed flux. In addition, we will present results of a pulse timing analysis and evidence that EXO2030+375’soutbursts shift in orbital phase. ©2001 American Institute of Physics.