Mitsubishi Outlander Sport rough idle issue when air conditioning is on on Mitsubishi Outlander Sport

Some Mitsubishi Outlander Sport owners report experiencing rough idle issues specifically when the air conditioning is on, which may be attributed to several factors. A common cause is a vacuum leak, which can disrupt the air-fuel mixture, leading to rough idling, stalling, and decreased engine power. Additionally, problems within the air conditioning system, such as a lack of refrigerant or a malfunctioning AC compressor, can increase engine load and contribute to rough idling. Some owners also note that surging carbon buildup in the AC compressor can exacerbate the rough idle. While it is normal for the idle to rise when the compressor engages, significant RPM jumps causing shaking may indicate a malfunctioning idle control system. Furthermore, electrical issues related to spark, fuel, distributor, or wiring can also lead to rough idling. It is recommended for owners experiencing these symptoms to check for vacuum leaks, ensure the air conditioning system is functioning correctly, inspect the AC compressor, and evaluate any potential electrical problems.