He continued to struggle in the IndyCar Series, finishing 18th overall in the 2004 season points and falling to 20th in the 2005 series. In the 2005 Indianapolis 500 Foyt was involved in an accident with Champ Car World Series driver Bruno Junqueira, who sustained a fractured back. The season did not improve as the team switched from Toyota to Chevrolet power mid-season and Foyt was replaced for the late-season road course events by Jeff Bucknum.