Dodge Neon loud chatter noise at idle and engine lurching in gear, possibly related to AC compressor replacement on Dodge Neon

Some Dodge Neon owners report experiencing a loud chatter noise at idle and engine lurching in gear, particularly after an AC compressor replacement. This chatter may indicate issues with the idle air control (IAC) valve, which is a common concern among Neon vehicles. Additionally, engine lurching can be associated with a rough idle, low idle, and occasional RPM surging, often linked to a faulty IAC valve as well. Owners should ensure that the AC compressor replacement was performed correctly and that the compressor is functioning properly; if the AC compressor clutch fails to engage despite adequate system pressure, it may signal a different underlying issue. Furthermore, some owners find that while the compressor operates intermittently, the absence of cold air from the vents suggests potential problems with refrigerant levels, compressor operation, or other AC system components. A thorough inspection of the AC system is advisable to identify the cause of these issues, and if they persist, consulting a professional mechanic for further diagnosis and repair is recommended.