The problem seems related to the powertrain control module problem never occurs when the vehicle is cold or from a stopped position. Problem is not consistent on average occurring once a day description of problem: In parking lot or after lot of low speed driving form traffic problem occurs?.. accelerate the rpms race on the tach and the speedometer is out of sink there is a delayed response a shudder, shift timing feels off kilter, erratic hunting, then a harsh forward this may be a one time event or several in succession and then returns to normal shifting pattern 2- cruising 30 mph problem occurred gave it some gas... tach shot to 4K delayed forward engaging then the car drove itself for 1/4 mile without me touching the accelerator 2006 Toyota Avalon.

- Memphis, TN, USA