Hi and thanks for using 2CarPros.com.
The loud clunk you hear when you place it in park, is it coming from the transmission? If it is, that may be the parking paw locking into park while the transmission is still turning inside. The first thing I want you to check are the half shafts (front axles) on the vehicle. If you have a broken CV joint, that would be why the car is not moving and the transmission clunks when you put it back into gear. Here is a link that describes its purpose as well as shows a picture of one so you can find it under the front of the vehicle:
https://www.2carpros.com/articles/how-a-cv-joint-works
Let me know what you find or if you have questions.
Take care,
Joe
Saturday, August 18th, 2018 AT 6:41 PM