2001 Lexus IS300 Base 6 Cyl 3.0L
what would cause the car to not be able to accelerate properly? once it gets to 50 MPH seems to be fine?
Plug in a code reader and see what fault codes may be stored in the memory of the ecu. This is where all diagnostics begins no matter who is going to fix this problem. if there are no codes stored after you check, please state that on the repost. The code reader can be purchased from amazon for as little as $20.