# Rear End Noise on my Explorer **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [November 12, 2008, 7:17pm UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062 "2008-11-12T19:17:21Z")\ **Posts on this page:** 18\ **Page:** 1
**Author:** ![Beck](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/beck/32/28683_2.png) [@Beck](https://forums.speedlife.net/u/Beck)\ **Post date:** [November 12, 2008, 7:17pm UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/1 "2008-11-12T19:17:21Z")
Eddie Bauer Explorer V8 5.4L 4x4 I don’t know if it’s just road noise, or It’s always been there and I’ve never noticed it…but I have a humming coming from my rear end (of my truck, you pervs). It happens anywhere from 10 mph to 75 mph. It happens when I’m accelerating, and when I’m just coasting or coming to a stop. It “seems” to change volume when turning the truck (like a typical wheel bearing) but the load won’t change enough like it would in the front to make the noise go away. The noise seems to get louder when the truck is going slower speeds. Probably just wind noise flushing it out @ higher speeds. I’m thinking low tire pressure (about 10 PSI low on each tire), or wheel bearing (which is a common problem). Maybe my differential is fucked? I would think that if my differential is fucked, that the noise would only happen when I’m accelerating. :gotme: Help? ---
**Author:** ![ubengineering](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ubengineering/32/5171_2.png) [@ubengineering](https://forums.speedlife.net/u/ubengineering)\ **Post date:** [November 12, 2008, 7:36pm UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/2 "2008-11-12T19:36:25Z")
wheel bearing is the first thing that comes to mind, otherwise a noisy gear box, or which i highly doubt, rubbing of some sort in the wheel well ---
**Author:** ![Birdman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/birdman/32/5186_2.png) [@Birdman](https://forums.speedlife.net/u/Birdman)\ **Post date:** [November 12, 2008, 7:42pm UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/3 "2008-11-12T19:42:45Z")
first things first check ur tires for abnormal tire wear or flat spots in the tires on all four of ur tires even though it does sound like the noise is coming from the rear it still might be the front. You are most likely correct about the noise being louder because of wind and the sound carrying away at high speed. If you do not have any abnormal tire wear it can still be a tire that is out of balance or even a bent rim. If all that seems normal before balancing the tires check the wheel bearings for excessive play and movement. Make sure all ur suspension components are tight. ---
**Author:** ![Carbonfiberhooded](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/carbonfiberhooded/32/7608_2.png) [@Carbonfiberhooded](https://forums.speedlife.net/u/Carbonfiberhooded)\ **Post date:** [November 12, 2008, 7:47pm UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/4 "2008-11-12T19:47:04Z")
I’d guess tires too. How old are they/ how much thread do they have left?? ---
**Author:** ![Slvr97Teg](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/slvr97teg/32/7346_2.png) [@Slvr97Teg](https://forums.speedlife.net/u/Slvr97Teg)\ **Post date:** [November 12, 2008, 7:54pm UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/5 "2008-11-12T19:54:34Z")
Could be in the rear end. I have a cherokee that does the same thing, i was told that it could be the pinion gear… ---
**Author:** ![Beck](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/beck/32/28683_2.png) [@Beck](https://forums.speedlife.net/u/Beck)\ **Post date:** [November 12, 2008, 7:55pm UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/6 "2008-11-12T19:55:02Z")
> [@Carbonfiberhooded](#): > > I’d guess tires too. How old are they/ how much thread do they have left?? newer tires. about 50-60% tread life left. ---
**Author:** ![articzap](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/articzap/32/7361_2.png) [@articzap](https://forums.speedlife.net/u/articzap)\ **Post date:** [November 12, 2008, 8:14pm UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/7 "2008-11-12T20:14:06Z")
The fact that it gets louder and quieter as you turn different directions defiantly sounds like a wheel bearing. I know in our work truck everyone thought it was coming from the rear end till I drove it and told them it was the right front wheel. Check it out. ---
**Author:** ![psychopjv](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/psychopjv/32/7251_2.png) [@psychopjv](https://forums.speedlife.net/u/psychopjv)\ **Post date:** [November 12, 2008, 8:20pm UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/8 "2008-11-12T20:20:35Z")
without driving it and knowing Exploders i’d go with abnormal tire wear. It’s so common it’s not even funny. Rear wheel bearings not common at all/rear end even less common on them (doesn’t rule them out). ---
**Author:** ![ubengineering](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ubengineering/32/5171_2.png) [@ubengineering](https://forums.speedlife.net/u/ubengineering)\ **Post date:** [November 12, 2008, 8:31pm UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/9 "2008-11-12T20:31:51Z")
figure it out with a mechanics stethoscope (idk if thats what theyre called the listening tool? fuck you know what i mean!) ---
**Author:** ![Birdman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/birdman/32/5186_2.png) [@Birdman](https://forums.speedlife.net/u/Birdman)\ **Post date:** [November 12, 2008, 9:21pm UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/10 "2008-11-12T21:21:01Z")
just check the wear of the tires (possible alignment issue or just out of balance) and loosness of the suspension. ---
**Author:** ![ILLRACEU](https://avatars.discourse-cdn.com/v4/letter/i/ee7513/32.png) [@ILLRACEU](https://forums.speedlife.net/u/ILLRACEU)\ **Post date:** [November 12, 2008, 11:15pm UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/11 "2008-11-12T23:15:00Z")
What year explorer? ---
**Author:** ![Mr\_T](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mr_t/32/7454_2.png) [@Mr\_T](https://forums.speedlife.net/u/Mr_T)\ **Post date:** [November 12, 2008, 11:16pm UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/12 "2008-11-12T23:16:35Z")
wheel bearings.does the noise change when you turn? ---
**Author:** ![Beck](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/beck/32/28683_2.png) [@Beck](https://forums.speedlife.net/u/Beck)\ **Post date:** [November 12, 2008, 11:25pm UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/13 "2008-11-12T23:25:34Z")
> [@95mx6](#): > > wheel bearings.does the noise change when you turn? read my original post. > [@ILLRACEU](#): > > What year explorer? 2002 ---
**Author:** ![JustinH](https://avatars.discourse-cdn.com/v4/letter/j/9fc29f/32.png) [@JustinH](https://forums.speedlife.net/u/JustinH)\ **Post date:** [November 13, 2008, 3:08am UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/14 "2008-11-13T03:08:35Z")
When you do the bearings, do the diffs also man… Fresh fluid is a good thing to have in the winter, the rear takes a heavier weight than the front, read the manual for the specs. If they are lockup diffs then you need to buy the fluid with the friction modifier mixed in. ---
**Author:** ![E.Roy](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/e.roy/32/5073_2.png) [@E.Roy](https://forums.speedlife.net/u/E.Roy)\ **Post date:** [November 13, 2008, 4:16am UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/15 "2008-11-13T04:16:09Z")
if the truck has been offroad, i would suspect water mixing with the rear end fluid, either way, it should be changed if it has not been yet ---
**Author:** ![9c1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/9c1/32/7392_2.png) [@9c1](https://forums.speedlife.net/u/9c1)\ **Post date:** [November 13, 2008, 5:57am UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/16 "2008-11-13T05:57:49Z")
Totally different cars, but on my WRX I had a humming noise that came from the rear and it ended up being a bushing that had gone bad on a plate that covered the rear end. Just throwing that out there. ---
**Author:** ![chino](https://avatars.discourse-cdn.com/v4/letter/c/bcef8e/32.png) [@chino](https://forums.speedlife.net/u/chino)\ **Post date:** [November 13, 2008, 5:59am UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/17 "2008-11-13T05:59:51Z")
make sure nothings rubbing… it could be something gay like a weatherstripping in the wheel well that came lose and is contacting the tire? ---
**Author:** ![Beck](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/beck/32/28683_2.png) [@Beck](https://forums.speedlife.net/u/Beck)\ **Post date:** [November 14, 2008, 7:28pm UTC](https://forums.speedlife.net/t/rear-end-noise-on-my-explorer/58062/18 "2008-11-14T19:28:51Z")
jacked the truck up today and checked for play in the hubs… rear passenger wheel bearing has play. :tdown: getting it fixed tomorrow. thanks guys :tup: