Rear end noise

Hello everyone one, looking for help on my 2wd 2003 tundra. I have a hum and vibration in drive at most speed, in reverse there is a clicking/knocking noise. Any thoughts?

 

First thought is to check U joints in the driveshaft. Could be other things but that is where I would start.

 

Carrier Bearing needs to be investigated, as well. Its what holds the drive shaft up. The rubber boot around it may be ‘biting the dust’.

 

Thanks for the advice, I initially replaced the carrier bearing and investigated the remainder u-joints, everything seems to be fine....

 

May not be bearing related, but read this link anyways to help you narrow down (other) possibilities.

https://www.knowyourparts.com/techn...earings/symptoms-of-a-worn-wheel-hub-bearing/

 

When was the diff fluid changed last?

 

I don't like that one bit. Some of those symptoms hit too close to home.

 

Honestly don't know, I have had the truck for about two and a half years and I have never changed it. Kinda thought that was like the transmission pan that if you haven't every done it then it might be better not to start

 

That's largely a myth about the transmission fluid. A full flush should be avoided but drain+fill's are fine and should definitely be done. Sounds like a drain and fill of the rear diff is a good place to start. Do you know if you have an LSD back there?

 

I would change the diff fluid and look carefully for pieces of metal. Start with the simple things.

 

Ok that is where I will start, thank you for the help. I am assuming LSD is a limited slip differential and I thought most vehicles had this anyway but I could be wrong, again . Also is there additives that I need to use work the gear oil and what weight should I use?

 

You'll want to confirm if your truck has the LSD or not. There may be a sticker on the differential housing. Otherwise you can check by putting in your VIN on Toyota's website. Do you have your owners manual?

 

Rear end noise


I'm plagued by it after heroic quantities of nachos grande.

 

Ok upon further inspection, I found oil inside my brake drum, now what?

 

New axle seals.

 

Sounds like a river

Your axle seals are blown. They need replacing. You’ll need new rear brake shoes as the old are soaked in oil. You’ll replace the differential fluid with new. I highly suggest a new rear diff breather.

 

Ok thank you, with the constant "rubbing" noise driving straight and the knock in reverse coming from one side, should I expect a pressing of wheel bearings too? Could it be the wheel bearings that caused the seals to go bad or are they one piece?

 

My rear seals went bad and suspect the rear diff breather was stuck shut not allowing heat/gas/enchillada steam (long story) out of the heated diff. The heated oil blew out the seals.

Fix this brake problem first and move on to the ‘rubbing’. Your brakes are more important than this noise.

 

Brakes first, then bearings. Seals leak all the time, wheel bearings less so, so start with the easy things and work your way up. When you do your brakes and seals you can easily inspect your wheel bearings at the same time.

Wheel bearings and seals are different pieces. A badly worn out bearing could make the seal leak. But a bad bearing will be easy to find if that is the case.

 

Yay axle seals! That wasn't a bad job, but looks like it. Have fun!

 

Yeah, not too bad. Just a couple weeks ago I had a stuck brake that was smoking which is what prompted me to tear into it. Luckily the bearings where within spec. My breather was totally blocked so I suspect that was the case.

 

Brakes, seal, and bearing replaced. No more noise in reverse and drives as it should, going to replace the diff fluid today and bleed the brakes again, thank everyone for your help and have truckin!

 

So....which parts do you think where actually bad? How did the bearings feel?

 

I'd like to know this as well. I've got a clicking and knocking sound when my rear tires roll over a speed bump. Curious as to what was making the noise.

 

Pics of old parts!

 

When the axle was out and I turned the hub you could definitely hear a rubbing noise. There was a little bit of play in the hub also. Can provide pics later. Clicks from a speed bump could also be shocks or ball joints if it is in the front