22RE idle problem

[NCYota4x4]

Has anybody had any experience with the idle going up and down while holding the brakes at a stop? Kinda sounds like a vacuum leak, but I can't figure out where it's coming from. I talked to a guy the other day with the same problem, so I figured it might be a pretty common thing. Thanks for any help.

 

[Bain]

did you spray everything with carb cleaner to see if the idle changes? that way you can eliminate vacuum leaks