Quote Originally Posted by BillBoost37 View Post
If it were surging, as in you have to hold it back with brakes and it's trying to get away from you at lights etc. That's common of a TPS. Lurching though sounds like you are driving and all of a sudded it jumps.
When I accelerate the car is fine initially and then its like the engine almost dies and then it picks back up, once up to like 40 or 50mph, the car is fine.

This only happens after a long high speed expressway drive, its like something is getting hot and some sensor is retarding acceleration to protect the engine or something.