It is the alternator....
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.
If this is a general noise, it could be the transaxle. When you are accelerating, the engine is pushing the gears, and when you let go of the pedal, the vehicle starts to shift back down. If this is an engine noise, it could be predetonation or a valve problem.
hi it sounds like your universail joints or tail shaft
Sounds like your ignition timing is off.
that use to happen in my ford explorer and it was the transmission try to make sure you keep eye on fluids good luck
Noises have to be heard to be correctly diagnoised. Check the motor mounts to see if they are broken.
it depends on what kind of loud noise, a knocking noise, a grinding noise, a chatter. if you can tell me what kind of noise i can help if your car is a manual transmisison and the noise you are talking about is a "growl" when under load then it is most likely worn bearings on the input shaft to the transmision. Well if the loud noise in only during acceleration, and has no noticeable effect on the cars driving, then it is most likely a hole in your exhaust. I have a 91 325ic and It had a loud accelerating noise, but when i plugged the hole and the harsh noise ceased. There are plenty of ways to plug holes for free just find one and try it and if it works..great!
Sounds like a loose or worn belt, alternator or fan tends to do that when they get worn or loose.
It is more than likely a bad wheel bearing they go out a lot in these cars
Loud and sustained or repetitive noise.
A noise that is 55 decibels loud is considered moderate in volume.