It's according to where the noise is coming from if it's the rods knocking due to low oil it will get faster because they move up and down and move faster when the motor gets faster.
you may have a rod knocking and you need to take it to a shop asap
A bad harmonic balancer can cause a knocking noise. The harmonic balancer doesn't actually produce the noise, but it can cause the noise in the engine.
IT is your CV Joints which is making this noise.
It sounds like your CV (Constant Velocity) joints are worn and need to be replaced
A hole in the muffler would cause a knocking sound in your muffler. A loose exhaust pipe can also cause a knocking noise.
Sometimes squeaky noises can be a result of a damaged belt. When you speed up, the noise goes away. You should get your car inspected by a mechanic.
I would say you either have a rod knocking or lifter knocking. I know in the 3.8 litre motors they are known to knock alittle when you cold start them. Most Grand Ams, Grand Prixs are like this. My sister has a 2002 Grand Am that does this and the noise goes away once it's warmed up. I would also double check and make sure your oil is full. get your car to a garage for a def solution.
Power Steering?
you probably threw a rod out, get it to a mechanic ASAP or you will have more problems.
Having a bad rod bearing could cause a truck to make a loud knocking noise and shake when driving at high speeds. The engine having a coolant leak or an engine timing problem could also cause the knocking noise.
It could just be the heat shield on the under side of the catalytic converter.
With out hearing it, It is hard to say whats wrong. But the most common noise like that would probley be a ROD knocking. Time for engine overhaul.