Engine? Could be a bad hydraulic lifter? Power train? Could be a bad CV joint or wheel bearing Check the tires. You could have a rock lodged in the treads. Or something worse such as a nail or bolt that has punctured the tire, clicking every time it hits the pavement. (Caution! Don't pull it out until you are at a good place to change a tire! I learned the hard way!)
Get your oil changed! ASAP! Sounds like you may be getting low on oil; with a slight oil leak... and with a 98 Saturn, that wouldn't be surprising.
It could be, try shooting it with some wd40 and if it changes pitch or stops it probably is.
the humming noise is coming from a bad ground on you stereo
sound is louder around the alternater
The decibel level of a wristwatch ticking is typically around 20-30 decibels, which is quiet enough to not cause any hearing damage even with prolonged exposure. It may be slightly louder in a quiet room but is considered a low-level noise.
you probably threw a rod out, get it to a mechanic ASAP or you will have more problems.
I have the same ticking noise and it seems to be louder on hotter days. I was told by the service tech it's due to the synthetic oil being thinner. I have my doubts, but that's what they said. Still researching for the answer myself.
The exhaust system is falling apart probably from rust, have it checked soon, you don't want fumes getting into the car.
It may be a tire or something even more serious. You should have it checked by a competent mechanic.
A humming noise on a 1999 Park Avenue is caused by bad wheel bearings. When bearings are loose or worn they will create a loud humming noise that will get louder and louder as the car accelerates.
probably the lifters not getting sufficient oil
It could be the clutch fan that is going bad. I had the same issue & the expense of the part and manpower can be $400 to $700.