Ghinzani remained with Osella for , and in the latter half of that year he was drafted into the Toleman team to partner fellow Italian Teo Fabi. Despite the competitiveness of the car (Fabi managed to put his car on pole in Germany), Ghinzani suffered reliability problems and was unable to register a finish for the team. In he returned to Osella which brought predictable results in a car that was based on a 1983 design and with a turbocharged Alfa Romeo V8 engine that was unreliable, only moderately powerful and hard on fuel.