MONTEREY, CALIF. ? Patrick Carpentier was vaulted into his first pole of the CART season after Michel Jourdain’s fastest lap was disallowed Saturday because his car was underweight.

Jourdain will start 13th today at Laguna Seca, based on his Friday qualifying speed of 113.524 mph. His lap Saturday was at 115.875.

“We are shocked and baffled at this development,” Jourdain’s team said in a statement. “The crew weighed the Gigante car just prior to qualifying and the car was overweight. The numbers just simply don’t add up.

“We are currently investigating the discrepancy in the weight of the car.”

Carpentier, fifth in the CART standings, initially was pleased just to move up to third on the grid after qualifying fifth Friday.

“For some reason with us, the seasons always started slow,” he said. “I am looking forward to the rest of the season.”

His lap at 115.8 lap was well short of the qualifying record of 118.969 set in 2000 by Helio Castroneves. Carpentier had not won a pole since last August.