I agree with inspecting for vacuum leaks.
With the car idling steady, spray some carb cleaner or throttle body cleaner around vacuum lines/connections.
If then RPMs rise, then you've found your leak.

Quote Originally Posted by Iceman6669 View Post
na he told me it only happens when going from D to R or R to D... Under load it is fine...
You realize engaging any gear is putting load on the engine...