Need help 03 regal

[03regalSEMO]

My 03 regal is acting up and I think I've pinpointed it but I can't keep spending money if I'm not sure, started off with EGR valve and a miss code, well I went down a money pit figuring out issues, some because of my own a
Stupidity, long story short I cleaned throttle body, replaced air filter, cleaned mass airflow, replaced map sensor, replaced EGR valve, spark plug wires and coil pack, my car doesn't want to accelerate after 2nd gear, the transmission was replaced and shifts great when it's not under load, so I'm not worried about that, so I don't have a EGR code anymore but I still have a miss code, I'm going to clean the fuel injector tomorrow and see if that fixes it but I'm certain it's not that either because at idle I can throw pedal down and engine responds like it should, am I looking at a bad ICM and has anyone else had these issues, it's been going on for at least a month and everything I fix just keeps getting me further in the hole, I live in a small town and parts are ridiculously priced here

 

[MelsRegal]

My 03 regal is acting up and I think I've pinpointed it but I can't keep spending money if I'm not sure, started off with EGR valve and a miss code, well I went down a money pit figuring out issues, some because of my own a
Stupidity, long story short I cleaned throttle body, replaced air filter, cleaned mass airflow, replaced map sensor, replaced EGR valve, spark plug wires and coil pack, my car doesn't want to accelerate after 2nd gear, the transmission was replaced and shifts great when it's not under load, so I'm not worried about that, so I don't have a EGR code anymore but I still have a miss code, I'm going to clean the fuel injector tomorrow and see if that fixes it but I'm certain it's not that either because at idle I can throw pedal down and engine responds like it should, am I looking at a bad ICM and has anyone else had these issues, it's been going on for at least a month and everything I fix just keeps getting me further in the hole, I live in a small town and parts are ridiculously priced here

Is the code P0300 or something else?

 

[03regalSEMO]

Is the code P0300 or something else?

No it was a EGR out of range code and that finally stopped and now it's a miss on cylinder 2, I'm cleaning fuel injector out now but if that's not this issue I'm lost aside from replacing ICM

 

[MelsRegal]

No it was a EGR out of range code and that finally stopped and now it's a miss on cylinder 2, I'm cleaning fuel injector out now but if that's not this issue I'm lost aside from replacing ICM

Check the list of causes here

P0302 Cylinder 2 Misfire Detected

How to quickly diagnose and repair, and causes of a P0302 electrical code which indicates a detected misfire on the number 2 cylinder.

www.obd-codes.com