I Have a 2000 Mitsubishi Eclipse with a 3.0L auto that has a p505 idle air control motor code it surges at a stop light. I have replaced two ilder air contol motors thinking that that was the problem. The old motor ildes at 750rpms the new ones ilde around 2000 rpms even though i have try to learn the new ones by driving and making a vacuum leak does any one have any thing i should try . LOST