I have replaced the plugs, wires coil packs throttle body tps and the accelerator position sensor. I have cleaned the mass air flow and tried resetting the ecu by disconnecting the batter for about 5 minutes and it is still in limp mode. I cant get it over 3000 rpm even in park and it only goes between 20 and 30 mph. Any ideas are very helpful because I am lost and getting irritated.

 

What codes are present?

Lots of unnecessary parts replaced, but hey now you have clean sensors lol

 

there are no codes present that's the thing.