Coyne returned with the same now two-year-old March in 1988 and after failing to qualify for the Phoenix race, Coyne made his first attempt to qualify for the Indianapolis 500, in 1988 but he failed to make that race as well. He made 9 starts in 14 attempts that year and finished two of them. He was credited with a single point and 12th place in the Miami race despite being knocked out by engine failure.