Check the engine oil level. Check the trnsmission fluid level. Is your mother in law still tied to the back bumber?
A faulty fan clutch.
Bad fan clutch!!
I would check the serpentine belt and pulleys
why is my '99 ford taurus making a knock noise and smoking from under the radator
Could be a wheel bearing/hub going bad.
Check your car if there's loosen tool that makes your car noisy when it accelerates.
it might be your starter.
Hello, my suggestion would be just opening the hood when the noise goes on. Try to locate where the noise comes from. I have similar problem with my Taurus 2000 SE. It occasionally makes the noise somewhere under the hood. I sent the car to pep boys today. they were not able to locate the noise because it was quiet . so i have to wait until the noise goes up again and open the hood and see.
A thumping noise on your Hyundai Sonata that accelerates when you go faster might be a tire balance issue or a tire that is coming apart. You might also have an issue with the tie rods.
no noise- no problem
The Ford Taurus does not have a timing belt, it has a timing chain. The timing chain is designed to last the life of the engine, and does not need routine replacement.
It 's your dang old cam shaft syncronizer.