2002 Dodge Neon Grinding noise!

My wife and I just did a tune up and thermostat replacement on her car and everything appears to have worked perfect. The temp is normal, it runs great, no sputtering or backfires, smooth acceleration etc. She obviously has a small leak in her valve cover gasket as there was some oil in her spark plug chambers but no other problems. After we fixed it however, there is an awful and loud as hell grinding noise coming from her front passenger side area. It does it periodically at idle as well so my guess is that the cv joint isn't the problem as it also does it when not turning the wheel. It sounds like something is rubbing against something else and it is getting worse. Is it possible that when I jacked up the car I bent something that is not touching her axle or another moving part? I placed the jack under a big thick piece of steel and didn't hear any bad sounds as I was lifting the car. We did spill quite a bit of greasy fluid down there so I am not sure if that could be it. Maybe something rubbing against a belt or the cooling fan? Help!