If a car has a loud humming noise when accelerating, it could be that the air filter is missing. The air filter housing might also be loose. A loud humming noise can also be a signal that there is something wrong with the alternator belt or the fan belt.
MAKE CAR MAKES THE SAME NOISE AND REPLACING THE PVC VALVE FIXED THE PROBLEM
could be your wheel bearings
it does that because it has a generator which makes the engine makes these sounds
as far as the humming noise and the grinding noise it sounds like your power steering pump is either out of fluid or gone bad completely. as for the muffler? ?MAYBE? the strain from the bad power steering pump is overworking the engine causing it to make noise? answer definetly a bad steering pump as for muffler, the sound can be transfred and magnified on a car, replace steering pump before bothering about the muffler sound may be gone
when you turn your key and you only hear humming noise, the problem will most likely be that the starter is not engaging the fly wheel, its turning but is not sliding forward to do its job. have the starter check.
Is the humming noise happening all the time the brakes are applied? Does it change pitch as the car slows? Is it loudest just before stopping?
Depends on where the noise is whats making the noise. Can you be more descriptive of where and what?
Sounds like you have an older 4 cylinder car. I had a Pontiac 2000 4 cylinder that did that.
Possibly a wheel bearing
Answer Humming noise from front endI just got my car fixed with the same problem and it was the wheel bearing and it is gone. Was it a fwd car?
could be fuel pump on the right side of car