Online innovation communities become increasingly important in fostering innovation. While the fluid, open, and non-hierarchical collaboration in these communities promises learning and knowledge exchange, it also poses significant challenges for temporal coordination. In this study, we explore how members of online innovation communities engage in temporal work to coordinate themselves. As a case study, we analyze time-stamped contributions to a prominent open-source software project to uncover temporal coordination patterns. Findings reveal that contributors engage in bursts of collaboration as means of temporal work to manage the challenges of incomplete design processes. Our research contributes a specific temporal lens to coordination in online innovation communities.