Why would this only happen when i turn on my AC?

Question

Why would the problem only exist when I turn on my AC. 65,000 miles. Had all 4 injects replaced at about 50,000 miles. Also, could this be an electrical issue as suddenly, my stereo amplifier only works half the time. Side speakers completely stopped workibg. Also causes error code P0300 and states an issue with traction control and stability systems.

Answer 1

When you turn the a/c this puts a load on the engine RPM, The ECM has to maintain a target RPM because the RPM if it goes low you can set misfire codes. either two events the charging system is not maintaining a adequate charge. or the a/c pressure switch is shorting. Pull a code not only for the powertrain but for the Body control.