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Weird noise from rear end, thunk thunk thunk

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I have a mystery noise and for the life of me I can't figure out what is causing it.

 

It only does it after I have been driving for a few miles. When it's cold there is no noise. Its coming from the passenger rear. It sounds like a thunk thunk thunk, while driving straight, as soon as I turn the noise changes to a grinding sound. When I put it into 4wd the noise stops. It's louder while decerating.

 

I have pulled the wheel off and the drum looked at the brakes... everything looks fine.

 

Could this be an axle or wheel bearing?

 

It's on a 88 GL w/ 235k

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good call on the lug nut, my wife had a wheel fall off after a certain large tire shop changed the tires. if the noise changes very dramatically like that it prob is lug nut. I find most thunks are axles, and most grinds are bearings though if those lugs are tight.

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could be a bone dry bearing. check them cuz i had the same exact sound and it was a dry bearing. the solution to that is simply repack and ur good to go.

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could be a bone dry bearing. check them cuz i had the same exact sound and it was a dry bearing. the solution to that is simply repack and ur good to go.

 

That's what I think I had one go out in eastern Wa and drove all the way home with a thump thump thump. sounds just like what I had going on.

 

Jeff

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I think I'm leaning toward the bearing idea. The lug nuts are tight and so is the castle nut (those where the first things I checked)

 

Just a repack or should I replace the bearing?

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Pull the bearings out and check to see if there's any discoloration or marks on them. If there is, replace but if not, repack and try it again. Basically a bearing pack is labor but the bearing replacement is kinda expensive. Did it on my RX and the bearing retailed at like $120:eek:

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