Hi Cheelam. Want to ask about my wife's year 2007 wire SE. On September the aircond suddenly not cold when idle or speed is slow. I thought need service or refill gas. As i don't know anything about car aircond i went to aircond shop for checkup. The mech show me the fan not working well as it spin very slow. So advice me to change. When he dismantle it i saw a string stuck on the fan. So i ask why don't he just remove the string & put back the fan see if it is spinning after removing the fan as i can see the fan still spinning but slow. But the mechanic just say even put back the fan already spoil, so just change new fan. So i agreed. After changing the fan i ask him to check others for service but he say no need since gas still ok. Then he say other parts are ok. After few weeks later my engine start to have rattling noise coming especially when starting the engine early morning. I thought it was the timing belt maybe loose or something. So when i went for car engine service the mechanic ask me to check the aircond. Maybe not enough oil or gas. But he warned me that sometimes aircond workshop may say need to change this & that even its not spoil & yet problem still happen. Same like my fan.The mechanic didn't bother to test it but change to new one. the aircond not cold enough when level 1 on afternoon but on level 4 its ok. Need your advice on what may cause the rattling noise & what can i do?