Loud Noise while idling and driving

I recently encountered a tinny-vibration noise coming from my car, it seems to be constant and sometimes increase with reving. I've checked the engine over and it seems to be coming from around the alternator/throttle body area. Has anybody seen this? Any Suggestions?

My mom has a 2003 that does it... We've taken it into the dealer (under warranty) two or three times. They say they don't hear it, which is typical of Ford, but I assume it's not a big problem. She has a manual, and it's particularly bad while going into first gear, but I don't know how it would be in an auto. Also, keep in mind that ALL ZX2's are just unusually loud when idling, in general.

My mom has a 2003 that does it... We've taken it into the dealer (under warranty) two or three times. They say they don't hear it, which is typical of Ford, but I assume it's not a big problem. She has a manual, and it's particularly bad while going into first gear, but I don't know how it would be in an auto. Also, keep in mind that ALL ZX2's are just unusually loud when idling, in general.

My mom has a 2003 that does it... We've taken it into the dealer (under warranty) two or three times. They say they don't hear it, which is typical of Ford, but I assume it's not a big problem. She has a manual, and it's particularly bad while going into first gear, but I don't know how it would be in an auto. Also, keep in mind that ALL ZX2's are just unusually loud when idling, in general.

Found it, it was the timing belt tensioner. thanx