As debut seasons go, Onyx should have been happy with 1989 as Stefan Johansson finished third in Portugal and fifth in France. But behind the scenes the team was a shambles. Jean-Pierre Van Rossem was supposed to be funding the venture but his money never materialised, and he was eventually replaced by Swiss businessman and car manufacturer Peter Monteverdi who renamed the team after himself. His involvement did not end there as he started to tinker in design, even cannibalising his own sports cars for parts. It was also rumoured he was telling his drivers how to set up their cars. The team withdrew from F1 in the build-up to the 1990 Belgian Grand Prix, and although it had a car ready for 1991 it never raced.