I have a 200 sunfire. It has started to make a clanking noise in the front passenger side. I took off the serpintine belt and started the car again. the only pulley that is moving is what I believe is the crankshaft pulley. Everything it tight. the noise is not all the time. the higher you idle the less it is. It sounds as if something is banging around but I cant find it. Dropped the oil pan to see if there was anything in ther but its claean as well. No engine light either. Any ideas???:confused:

It is possible that the crankshaft dampener is going bad. There is a rubber insert between the two halves of the dampener. If it goes bad it will make the noise you are indicating. The only way to repair it is to replace the dampener. I would go to a wrecking yard and get one. They can be quite expensive new.