My '95 Grand Marquis (or as I like to call it, a Grandma Rquis) is suddenly very loud. There doesn't seem to be any issue with the performance, and when it's idling, it's as quiet as can be. I'm wondering if there is a vacuum or air leak or if it's something else.
I've recorded audio of it. I hope links are permitted here. Any help would be great! I'm hoping to avoid a costly repair, though I'm going to take it in to the mechanic tomorrow.
EDIT: Also, the sound is coming directly from under the hood. It's impossible for me to tell where since I don't have anyone to hit the gas for me while I listen.