Rear end humming noise.

[audioatg 10+ year member]

when you lift a vehicle it changes the pinion angle and causes them to were out out much faster due to the torque angle being forced more to one position.

Whyd you quote the other guy when the vehicle in question isnt even lifted?? Or the OP hasent even said its lifted.

 

[SicAudio 5,000+ posts]

Whyd you quote the other guy when the vehicle in question isnt even lifted?? Or the OP hasent even said its lifted.

because I was correcting him and the OP said he was "modding" his truck. 1 might assume it has lift.

 

[Ken448 10+ year member]

I dont need correction. Improper pinion angle would fall right under the "beat on" category.

 

[audioatg 10+ year member]

because I was correcting him and the OP said he was "modding" his truck. 1 might assume it has lift.

Odd what did he say wrong to be corrected on. And OP said he is modding it could mean alot of things. And the noise is happening now not later when he modds it lol. Your not one of those types that thinks he knows everything because he past a ase test.

 

[SavageBlackout 10+ year member]

bearings. check for play

 

[joeboxer5876 10+ year member]

i get the hum in the rear end of my 98 s10. it was when i found out that i blew out the seal and replace that and the bearings. the hum stayed and i usually get it at about 70 mph. my buddy told me that the loss of fluid probably cause more heat and polished my gears and that why the hum is still there. i would take that back plate off and see how much fluid is in there and how much metal has collected on the magnet!

 

[SicAudio 5,000+ posts]

Odd what did he say wrong to be corrected on. And OP said he is modding it could mean alot of things. And the noise is happening now not later when he modds it lol. Your not one of those types that thinks he knows everything because he past a ase test.

I was correcting him for saying they dont wear out that often, but every situation is different and like he said : "being beat on" would also be one of those reasons.

the ? had also been asked if it had been lifted but there was never a reply about it. and it is "Passed an ASE test" learn to spell before you challenge me or any one elses credentials. I was an ASE tech for 22 years, you dont last that long in the business if you are a quack. ASE is a joke but it is unfortunately, the standard that the public recognizes. any idiot can read the book and take a test, but it doesn't mean they know a **** thing at all. experience is the true teacher.

all in all every answer I have seen are all good things, but I would have it checked if you dont know what to look for. In my experience as a very good diagnostician and finding what is causing that weird noise you hear when you are between 45 and 65 MPH it is usually a bearing or the rear end gears, but not always. I am not there to see it so I wouldn't say 1 way or another. If you know what a U joint or axle bearing going bad sounds like then by all means look for yourself, otherwise take it somewhere and have them tell you what is wrong. if it isn't the gears and you feel comfortable doing it, then fix it yourself.

 

[audioatg 10+ year member]

QUOTE=SicAudio;6097449]I was correcting him for saying they dont wear out that often, but every situation is different and like he said : "being beat on" would also be one of those reasons.

the ? had also been asked if it had been lifted but there was never a reply about it. and it is "Passed an ASE test" learn to spell before you challenge me or any one elses credentials. I was an ASE tech for 22 years, you dont last that long in the business if you are a quack. ASE is a joke but it is unfortunately, the standard that the public recognizes. any idiot can read the book and take a test, but it doesn't mean they know a **** thing at all. experience is the true teacher.

all in all every answer I have seen are all good things, but I would have it checked if you dont know what to look for. In my experience as a very good diagnostician and finding what is causing that weird noise you hear when you are between 45 and 65 MPH it is usually a bearing or the rear end gears, but not always. I am not there to see it so I wouldn't say 1 way or another. If you know what a U joint or axle bearing going bad sounds like then by all means look for yourself, otherwise take it somewhere and have them tell you what is wrong. if it isn't the gears and you feel comfortable doing it, then fix it yourself.

If you wanted to get it right. I didnt spell anything wrong I used the wrong word in the wrong context. If you are a 22 year old ase tech you would think if it was lifted and thus changing the pinion angle he would of said it was lifted but he did not. And if it was lifted that much do all of that. It would of taken out the u joints and pinion bearing long before it had taken out the gears. And he would have other vibrations as well. So there was no need to correct some one when he didnt get anything wrong. And if you wanted to correct me it wasent I spelled anything wrong I used the wrong grammar. We all cant be as perfect as a internet guy like you. Challenge you lmao.

 

[SicAudio 5,000+ posts]

WOW, you cant't spell period can you?, and fyi, I'm not 22 yrs old lolz. Guess you can't read to well either? I am a retired tech of 22 yrs not 22 yrs old.

and fyi: If the rear springs or perches are worn it can wear the gears w/o affecting the joints at all. The joints will take far more pinion angle w/o ever wearing out, than the pinion bearing will, (upto 9 degrees of angle whereas anything more than about 3 degrees will trash the gears & pinion bearing if it is not aligned correctly and properly shimmed)

Guess it shows how much experience you have. From the way you spell words consistently incorrect and by your poor grammar, I would be willing to bet you are a shadetree know it all type.

 

[dman4486 5,000+ posts]

1 or 2 piece drive shaft? If it is a 2 piece, it could be the center bearing on the drive shaft. Or like others said pinion, axle bearings. Gears dont wear that often unless they are ran dry, or beat on severely.

I wore out my 8inch 4.11 in 2k:crap:

I need a bigger axle

 

[dman4486 5,000+ posts]

this thread went shitty quick

 

[SicAudio 5,000+ posts]

sorry did not want for that to happen but I just can't stand morons trying to correct me for being right. lolz and as I had already said all the opinions were on track with the most likely issues that can cause it. personally I could care less either way what is wrong, you cant effectively diagnose a car without it being in front of you, so it is all conjecture either way.

 

[Einzee 10+ year member]

Just FYI to those that are still reading this thread.... Another way to narrow down the possible source of noise is to accelerate to the speed at which the noise is noisy and shift into neutral and let off the accelerator. If noise is still there then I'd start at the wheel bearings. If noise goes away, then I'd look more into the differential.

Just my 2 cents.

 

[audioatg 10+ year member]

WOW, you cant't spell period can you?, and fyi, I'm not 22 yrs old lolz. Guess you can't read to well either? I am a retired tech of 22 yrs not 22 yrs old.
and fyi: If the rear springs or perches are worn it can wear the gears w/o affecting the joints at all. The joints will take far more pinion angle w/o ever wearing out, than the pinion bearing will, (upto 9 degrees of angle whereas anything more than about 3 degrees will trash the gears & pinion bearing if it is not aligned correctly and properly shimmed)

Guess it shows how much experience you have. From the way you spell words consistently incorrect and by your poor grammar, I would be willing to bet you are a shadetree know it all type.

O wow. You cant even get things right you wanna correct me. 22 year old ase tech means you have been a ase tech for 22 years. Wow lmao. You wanna talk about me and my grammar. I know this thread went shitty when you came in here correcting ppl for not even being wrong. You just assumed he didnt know what he was talking about like you are with me. And I am with you. So his truck went from being lifted to having worn out springs and perches. All I asked is why you corrected that kid about asking if it was a one or two piece drive shaft. And you went off all knowing god like. Lmao . You crack me up kiddo. And We are talking about his truck not every one's in the world. His. And His truck is a dodge ram with a 1 piece drive shaft. Could be alot of things even wheel bearings.

If you wanna check it out. Jack that back end up put it on stands put some wood in front of the tires. Start it up run it to you hear the noise get under there and listen to were its coming from. I would just use my chassis ears but Im not with you.

 

[SicAudio 5,000+ posts]

i never said he was wrong, i was correcting that other things cause rear ends to go bad such as simple wear and tear maybe? i also said his suggestion was a good 1 if you reread it. and sorry man if you feel like thats what i was doing. also I am far from a "kiddo" lolz.

22 year old ase tech means you have been a ase tech for 22 years, wrong it means I would be 22 yrs old and an ASE tech.

I have been a tech since you were potty training lolz. doesn't make me any better than anyone just stating a truth. don't get it all twisted as I wasnt flaming anyone at all, just making an observation based on what was here.