My 2003 Corolla has developed a low-pitched hum which seems be coming from the rear. It is definitely speed-dependent and is most noticeable above 50 mph. Origiaally thought it was tire noise from my snow tires but the sound has continued with the change to my all-seasons. Is it likely to be a bearing? When the bearings went on my Jetta they really growled a lot and you could determine the side by turning both ways and seeing which way the noise was worse. Any suggestions?
The discount places sell the hub for about $115. & tax. any shade tree mechanic can install in 30 minutes. jackup the car. spin wheels sometime you can hear the problem. if not,then remove hub and spin by hand. the hub is interchangable. both of mine were bad.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Only when moving? Does pitch change with speed of vehicle?
Generally a humming sound from rear is a fuel pump warning you that it is getting near the end of its service life. You usually notice that more, however, when the car sitting still running and you walk around the rear of the car.
Wheel bearings can make a variety of different sounds, mostly noticed in the first half mile of driving. A "whomp whomp whomp" pulsing sound is the most definitive wheel bearing sound.
Slotted or drilled brake rotors can make a humming sound, but I doubt anyone put those on a '94 5 Series. Worn tires can get pretty noisy, but you would have figured that out if it were the problem.
MOST of the hums after a while come from the diff as the back axle does the driving and almost all its life runs the same way except when going in reverse ,is the rear diff meshing and worn on both the crownwheel and the pinion and the humming gets slightly louder the faster you go and almost goes when almost stopped and this can also be the slight vibration you get so get the diff oil drained and refilled and check if there is any metal in the oil when drained if so thats your problem But it will last for years like that..Let me know how you get on RON