I have an 05 Intrepid with a 2.4 dohc . intermittently while driving it will start running real rough and drop speed. I noticed if I can keep it under 2200 rpm it is ok, but once over that or try to give car more gas it starts running rough and drops in power.Code reader I had (cheap one) said 2 codes crank sensor, cam sensor. Changed crank sensor , still same problem. now code reader says cam sensor and knock sensor. Could this may be a wiring issue or maybe in the computer?

 

For some reason, with that engine, the crank sensor and cam sensor seem to both need changing at the same time. If you spend some time browsing old threads here you'll see people wind up changing both.
The knock sensor may just be reacting to the rough running. How old are the spark plugs?