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Message: <blockquote data-quote="dentac" data-source="post: 28952690" data-attributes="member: 501941">Its Zen Estilo 2011 - VXIThe problem is -1. My rpm set to 1000 RPM. cannot set to 900 rpm .when AC is on rpm goes down to 500rpm and comes to 900 again and again. so i set to 1000 rpm that's a one problem2. when im running with ac - if i make a neutral - then rpm goes down (500rpm) engine shaking - then i push the accelerate paddle then rpm automatically set to 1000rpm..car is running well without ac. cold start works fine when start first time on a day, Cleaned the throttle body/plug/ignition coils, replace alto IAC valve to check if its bad, Ac top-up. no any luck-can anyone tell me what is the problem and what to replace or check</blockquote>

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