The team introduced its new car, the JS19, at the following race at Monaco but it performed poorly. The team reverted to the JS17B for the next few races while the JS19 was developed further. Cheever placed second at Detroit from ninth on the grid while Laffite qualified 13th and finished sixth. Both drivers retired from the next race in Canada, the last occasion at which both drivers used the JS17B. Cheever switched to the JS19 for the Dutch race, leaving Laffite with the old car; he qualified in 21st and retired from the race with handling problems. Laffite took over the JS19 and Cheever reverted to the JS17B for its final race in Britain. Here he qualified in 24th place but was unsuccessful in the race, retiring with an oil leak.