2000 Toyota Tundra noise in rear

SPUD3369

MEMBER
2000 TOYOTA TUNDRA
6 CYL
2WD
MANUAL
116,000 MILES

I am hearing a whum-whum somewhere around the differential when I am decelerating between 50 mph and 30 mph. I rotated the tires and no difference. I then went to the rear u-joint and changed it with no difference. I then raised the rear wheel wheels off the ground and put it in gear and reved the accelerator. I then heard a similar noise coming from the differential so I put my screwdriver to the left side of the diff. And listened and then put it to the other side and listened. There was no difference in sound from one side to the other, I was thinking of a wheel bearing but I thougtht I would hear a big difference from one side to the other with the bad bearing being louder. What do you think?

3 Replies

RACEFAN966

MECHANIC
5,029 POSTS

This could be either an axle bearing or it could be the differetial bearings or the gears inside. I take it you checked the other u-jiont and the carrier bearing if so equiped?

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Monday, November 30th, 2009 AT 9:18 PM

SPUD3369

MEMBER
3 POSTS

Yes, I had the whole driveshaft out and everything appeared fine, nothing was tight or sloppy. To remove the diff. Will I need anything special such as torch or hyd. Press? Will the axles come out fairly easy or will I need a slide hammer? Any other tips? Thanks much

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Tuesday, December 1st, 2009 AT 5:22 AM

RACEFAN966

MECHANIC
5,029 POSTS

Now this all depends on what all you need to do. If you plan on rebuilding the rear end then don't, take it to a shop that does rear end work, as you will need tools to check backlash and pinion depth and so on. Now if you plan on doing the rear axle bearings then the only thing needed is a press. You will loosen the lug bolts, raise and support the truck, remove the wheel then remove the brake drum then remove the 4 bolts that hold the backing plate onto the rear axle tube, remove the brake line from the wheel cylinder disconnect the e-brake cable and then pull the axle out. Now you cut the old bearing and retainer off and have the new seal, bearing and retainer pressed on and put it back together. Here is a pic of what you looking at.