2004 Hyundai Tiburon Q&A
2004 Hyundai Tiburon Question: Transmission is shifting hard between second and third gear.
Provided the transmisson fluid is up to level, clean and clear, you need to get a transmission specialist or a Hyundai specialist to diagnose it for you. Sounds to me, if the fluid's OK, that you may have a line pressure control problem and it needs to be diagnosed by a pro. Here's a directory link for you: https://repairpal.com/directory?address=04668&car_brand_names=Hyundai - Superbob