Vibrating gas pedal

you don't say where the noise is. that is important to give a clue where the issue is. when stopping on the brakes 3 things happen. you press the pedal and the abs pump starts pumping fluid. the second is the brake capilers start pushing on the rotors to slow the car. the rotors are attached to the wheels and that stops the car. so if the rotors are warped you will feel a vibration in the steering wheel when stepping on the brakes. if its your foot feeling the pump working that is normal for abs pumping. you should feel it and holding the pedal will keep it working and stop you from skidding if everything is working correctly

You may have front brake rotors which are slightly warped. The ABS only comes into play under very hard brakeing conditions. Typically you may also feel a slight pulse in the brake pedal as you slow down.That would be my best guess.If you have a vibration when you are stopped, that may be a motor mount issue. Either the front and/or rear mount may be weak.They are designed to isolate small engine vibrations you might feel when the car is at a stand still The motor mounts are designed to isolate small engine vibrations at a stand still at idle as well as limit the amount of travel the engine can make under a load. As a car gets older, the rubber which is what the mounts are made of get harder and often collapse slightly and can cause your condition because they are no longer plyable.Maybe this might shed some light on your problem. Good luck.

Your left front tire may be out of balance

That turning of the steering wheel puts lateral pressure on CV joints. IT can also put a load on the axel bearing. If the vibration stops then you have an idea where to look. IF it does not stop then it is most likely tires.

sounds like you have a bad wheel bearing, does sound change going around curves ?

possible tire balance out of whack. cheap quick fix get your tires balanced.

I would look at the half shafts or cv axles.

in all honesty havent a clue without a drive ,sorry

if it were the rotors it only happens when braking take in have them turn rotors see what happens good luck

That sounds like a left front wheel bearing gone bad My friend.. turning right transfers weight to the left side and it probably has a roar similar to a turbo fan jet.. Try it and lemmie know.. thank you