I have a 2000 2.4 L auto and recently my car started to idel high like 1300 rpms. When i shift from park to drive when the car is cold the idel bounces from 600 to 1300 about 5 times and then settles at like 1300. I'm thinking it's a vacume leak but can't find any. Does anyone have any clue what could be causing this?

Thanks, Chris



2000 z24 Cavalier