Car stuck in limp mode..accelerator is not responding..changed accele.

You need to find the fault codes and that will give you a idea what you need to physically check. So this has a throttle sensor and you changed it and it didn't do anything. You need to test each sensor for input voltage and output voltage from the sensor to the ecm/pcm. You could have a mouse that chewed a wire. You need to find the flow chart for the trouble codes and follow them. Repairing automotive computer systems is not easy. It takes a lot of education and skill and thousands of dollars of equipment. My advice is if you aren't a trained automotive technician who specializes in diagnostic repair and has spent thousands of dollars on equipment, I would recommend taking it to a repair shop. You will probably pay more money throwing parts at it and not fixing it.