In his early years, he was largely considered a back marker; however, after joining the Rahal team in 2002, he became a championship contender.

Jourdain ended his Champ Car career in 2004 with 1 pole, 2 wins, and 9 podium (top three) finishes.

He was able to notch one top ten finish, however in July ppc Racing announced that the team could not continue with a full season due to insufficient sponsorship.

Later in the year he was signed to drive in the A1GP series for A1 Team Mexico, returning to open-wheel racing for the first time since his Champ Car days.

During the 2003 Baja 1000 Jourdain, supported by girlfriend Ana Paola Romo, raced a SCORE Baja Challenge class vehicle finishing 6th in their class with a time of 31:01.31[1] In October 2010 Jourdain and his co-driver Miguel Ángel Diez got the second overall in La Carrera Panamericana in a Studebaker 1953, just 12.9 seconds behind from Harri Rovanperä.