I’ve attached a video of what I experience at times when parking after driving. At times if I accelerate a little heavier than normal I experience this rpm drop going from reverse to drive when I am getting ready to park. I don’t feel it’s necessarily trans related because the car shifts perfectly and never shows signs of lagging. No codes are being thrown at all and this doesn’t happen all the time. I sent it to a buddy that is a Toyota master tech and said he has never seen this issue before. Has anybody else had this issue? I’m wondering if maybe the flex disc could be worn out and might cause an issue like this.

 

Clean the TB, clean the MAF, clean the air mix ports, make sure the PS vacuum line has no breaks or leaks, make sure all other vacuum lines are intact with no leaks/issues, check PCV for leaks and flow.

That is usually a sign of some light air metering issues, nothing to really be concerned about but if it bothers you those are areas to start looking at to make sure nothing is leaking

 

thanks! I will for sure. I replaced TB gasket, power steering hoses, and a few ransoms recently but I know there are a few that are still brittle.