Dear all, today my ALTO 2010 idle RPM and Accelaration increased alot and after checking it from mechanic it reduced to normal. But when i drove to my home, it increases again. Now advice me what could be the reason. Becuase earlier my car was running fine and i feel that it incrases when i asked the mechanic to lubricate engine timing belts. Is there any relation between lubrication of belts and increased RPM.???