Mario Andretti's chance of winning the Le Mans 24 Hours virtually ended after electrical problems knocked his car out of action for an hour Saturday.
Porsches battled for the early lead after eight hours of the race.After coming in second last year, Andretti was back for another try at the only major international racing title he has yet to win.
His Courage-Porsche, in which he's sharing driving duties with Jan Lammers and Derek Warwick, was in seventh place, about three minutes behind, when trouble hit.
Just before three hours into the race the car, with Lammers driving, stopped on the circuit, near the pit entrance.
Lammers got out of the car and pushed it about 400 meters into the pit lane, where his team mechanics were allowed to come out and help.
The team repaired the damage to the ignition unit but lost 17 laps, or some 143 miles, and the car slipped to 44th place. It climbed to 37th at the eight-hour mark.
"I think it was electrical problems," Lammers said. "If I had to push it more I would have. We lost a lot a time but there's a lot of times to go."