1997 Eagle Talon hey

You know we need more than that to go on. Does the pitch change when you increase engine speed? Have you actually looked under the hood to determine where the sound is coming from? Is it a squeal, a thumping, a rattling sound? If you can't provide any kind of description, hint, or observation, you'll need to find someone to listen to the noise and look for the source. We can't do that over a computer.

If the noise is related to the engine, you have to list the engine size. There's three possibilities and they're all very different.