SSR

I have recently been talking to people on this site and they were very helpfull. When I start up my dads 2006 chevy ssr. It used to run at 750-1000rpm. I cleaned the filter and some other stuff. It droped itself to 500rpm which is good. When you start it up and let it run for 30 seconds and hit the gas it acts like it wants to die. Any idea I did get some codes that I shared with people. I will re post the codes. Here are the codesThe code P1682 ignition switch circuit could have been set from crqnking it without it starting and the battery voltage dropping too low. There is a bulletin for that code setting because of that condition. The P0300 is random missfire the P0443 is evap purge solenoid control circuit. The P0102 is mass air flow sensor performance. The P0102 can be caused by the same reason the P1682 can low battery voltage.I would have the battery tested make sure the alternator is charging properly also make sure the battery cables are clean and tight. Also have a back pressure test done to make sure you dont have a plugged cat. That could set a random missfire code the mass air flow code etc. Any idea why it would act like it wants to die. I think it may be the throttle body but I am not sure. Thanks.