I drive 2004 HC DSI. Recently I noticed the engine sound was loud whenever I start the engine. I was asked to change the aircon belt and tension bearing at the SC. I did that ( cost RM 170.00 ). But now I get a new whistling sound when ever I start the engine ?. This sound dies off after few mts of drive. Can any one help?

I always consider the car mechanics and the doctors the same. Both deal with complicated systems. But both will beat around the bush if they do not know what to do. Mechanics will ask you to change the whole part and the doctor will ask you to go for unnecessary tests and operations. But if you get a good experience mechanic and good doctor both can fix the problem on the first visit. Just sharing my exeperience.