So I drive an 06 Saturn ion 3 L4 2.2. It has an issue of going into limp mode and while I’m at a stop sign/light the engine will have a change in performance and it’ll hesitate to go from a complete stop unless I rev it while I wait. The codes it shows are P0106, P0455, P0304. I’ve replaced all the plugs and checked the ignition coil and boots, I’ve replaced the map sensor, cleaned the throttle body and replaced all vacuum hoses, I cleaned the intake manifold out and replaced the gaskets and I even bought a new gas pedal because there was a code saying that. But yet after everything it still persists, kind of getting tired of putting money into the car but I know if I can just figure the issue out then it wouldn’t be a bad car. Any ideas?