Where are the p0320 and p1391 sensors located in the dodge intrepid?

It would help to know just a little more about your car:
https://www.askmehelpdesk.com/cars-trucks/when-asking-about-your-vehicle-303903.html

P0320 relates to the Crankshaft Position Sensor (CKP)
P1391 relates to the Camshaft Position Sensor (CMP)
These will likely have more symptoms associated with them but will also need to be thoroughly diagnosed and fault trace locally by your mechanic to determine what is causing them to set.