# Humbin coming from rear end? **URL:** \ **Category:** SON240sx Automotive\ **Created:** [August 31, 2007, 10:05pm UTC](https://forums.speedlife.net/t/humbin-coming-from-rear-end/109060 "2007-08-31T22:05:24Z")\ **Posts on this page:** 1\ **Showing post:** 4
**Author:** ![DarkForceJackal](https://avatars.discourse-cdn.com/v4/letter/d/b38774/32.png) [@DarkForceJackal](https://forums.speedlife.net/u/DarkForceJackal)\ **Post date:** [September 1, 2007, 9:40am UTC](https://forums.speedlife.net/t/humbin-coming-from-rear-end/109060/4 "2007-09-01T09:40:39Z")
> [@Just another new guy](https://forums.speedlife.net/t/just-another-new-guy/13567/16): > > just about a month ago my car started to make a humbing noise when i am on teh gas pedal and the noise gets higher pitched witht eh rpms adn is the highest in 5th gear, im pretty sure its not a wheel bearing becuase it only does it when im on the gas. i was wonderign if it was the rear diff fluid running low or my rear diff all together, any help would be greatly appreciated. Although it probably isn’t a rear wheel bearing, you could confirm by “slaloming” the car in a parking lot and seeing if the sound goes away when the car leans from one side to the other. IE. A hard right turn that makes the noise go away would imply the driver’s side bearing would be bad (less load on it) and vice versa. Other than that, my first stop would be the diff fluid indeed…good luck. --- _[View the full topic](https://forums.speedlife.net/t/humbin-coming-from-rear-end/109060)._