Humming sound? Can it be as simple as the rear diff?
#1
Humming sound? Can it be as simple as the rear diff?
I started hearing this hum after i'm going about 20mph or more and it is only when steering wheel is turned left. It will even hum if truck doesn't lean when I turn. Front bearings have been replaced. The rear diff cover is coated in grease which I don't see how that is possible. If it was leaking I would expect fluid on the ground after sitting overnight. Also, there is no vibration. Hoping to fix whatever it is this weekend.
#2
#3
Not awake yet myself lol.
2000 3.9l. Front hubs were replaced and hum is still there. I'm checking the diff level soon as I can, working right now. I didn't know it would only drip when driving. As far as the grease on cover it kind of looks like it seeped out the drain plug then went in a circle around it to cover almost the entire cover. Just read that one some vehciles the motor mounts can break and cause engine to vibrate against frame.
Last edited by syllinx; 03-30-2012 at 09:06 AM.
#4
#5
#6
take a look
take a look I have a thread on pulling my Diff cover off cleaning the Diff out putting the cover back on and re filling it with some pic's this was back in Sept 2011 it was my first time doing it so I wanted some help.
You can get new Diff plugs in most auto stores I used a gasket and the ATF gasket sealer on the cover plate I think that’s what it’s called it was easy and fast.
You can get new Diff plugs in most auto stores I used a gasket and the ATF gasket sealer on the cover plate I think that’s what it’s called it was easy and fast.
#7
No the oil
Inside the Diff is a very large gear the ring and it slings oil all over the place it’s submerged in oil all the time that’s why it may only leak as you drive.
The hum is low oil
This may not even be whats wrong but its a start.
So pop the plug and check the oil level if oil seeps out it ok but if not stick a finger in and feel how low it is
The hum is low oil
This may not even be whats wrong but its a start.
So pop the plug and check the oil level if oil seeps out it ok but if not stick a finger in and feel how low it is
Last edited by 98DAKAZ; 03-30-2012 at 09:36 AM.
Trending Topics
#8
#10
Pcv grommet?
Any idea if they also have exact fit pcv grommet? mines hissing no matter what pcv i buy. I did just put a hose clamp on the hose and it seems quiet now, but with all the miles I have id like to put new grommet just for peace of mind. I can't check too many sites lol for car parts right now. They record my screen at any given time lol and when i'm on call with customer. 170000 miles(only been in shop for alignments and busted hoses)