So just a few days ago I started to notice a grinding noise under the hood of my 2000 Grand Prix GTP. It has gradually gotten worse, and now it is much louder than the normal engine noise produced by the car. I hadn't noticed it until my friend remarked, "Jeez man what did you do to your car? It sounds like a diesel." A few of my other friends then agreed. Upon starting my car there is a real loud grinding noise by the engine that lasts just over a second followed by a quieter grinding noise that continues during the entire time in park or idling. I have noticed that it diminishes slightly with the A/C off, sometimes more than usual. It does not grind if I am cruising along, at least noticeably, but as soon as I come to a stop it begins again. It seems louder in park as well. The car has a smooth idle around 800 rpm and it runs perfectly (besides a suspension issue I have yet to address, most likely a CV axle). Does anyone know what could cause this, as well as the things I might be able to do with very limited mechanical experience to solve this problem? Thanks a bunch
