Manufacturing process is more assisted by improvement projects to improve efficiency or decrease cost. These project teams usually cross different departments so engineers need to know coordination needs while executing such projects. This study examined twelve manufacturing process improvement projects to analyze coordination needs and their relationships with project performance. The results indicate that the project's uncertainty is generally higher than equivocality. But it is equivocality that has a correlation with performance. This finding means that adequate adoption of coordination methods to decrease equivocality will have impact on project performance. While comparing the projects with higher equivocality, the major difference is resulted from environment quality and personnel differences.