With the McLarens of Prost and Niki Lauda dominating , Arnoux had a less successful second season at Ferrari, only finishing 6th with 27 points, with his new teammate Michele Alboreto progressively taking the initiative and team leadership from him. After three wins and four pole positions in 1983, Arnoux failed to win or claim a pole position in 1984 (Alboreto won the Belgian Grand Prix from pole with Arnoux starting second and finishing third), though he finished second in San Marino and Dallas where he was forced to start from the pits due to an electrical fault on the warm-up lap and managed to keep his car out of trouble on the crumbling track. The only Grand Prix ever held in Dallas was also the last time Arnoux achieved a Formula One podium finish. As the season progressed, Arnoux appeared to lack motivation, and after finishing 4th in the opening race of the championship in Brazil, he left Ferrari by mutual consent. His place in the team was taken by Swedish driver Stefan Johansson. He was seen in the Brabham pits at Imola in Round 3, sparking rumours that he would join the team then owned by Bernie Ecclestone, but nothing came of it and he was rarely seen at races for the rest of the season.