Johncock abruptly retired from IndyCar racing during the first week of practice for the 1985 Indianapolis 500, just before qualifications. He served on the IMS Radio Network in 1985 but decided to return to racing in 1986. He planned to enter the 1986 Indianapolis 500, but his funding for a car fell through. He wound up sitting out the race. He attempted another return in 1987. During the first week of time trials, Jim Crawford suffered serious injuries to his feet. Johncock was hired to drive in replacement and qualified for the race.