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Clunking noise when shifting into reverse

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Old May 21, 2024 | 04:38 PM
  #1  
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cbn700
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Clunking noise when shifting into reverse

Hello all
i have a 2003 Lincoln Navigator and have a
”clunking” noise when I shift into reverse. It is worse when I do this with my foot on the brake. But no noise when I shift into drive. Any ideas on what this might be? Otherwise it seems to drive very well thanks
 
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Old May 22, 2024 | 07:19 AM
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It is either worn driveshaft U-joints, or a failing rearend. Most likely it's the U-joints.
 
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Old May 22, 2024 | 09:50 AM
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Hopefully is u joints and not rear end. Any possibility maybe a bad transmission mount or the dofferential stabilization arm bushing?
 
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Old May 22, 2024 | 09:51 AM
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Will have some time this weekend to crawl under and check driveshaft
 
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Old May 22, 2024 | 05:04 PM
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Originally Posted by cbn700
Hopefully is u joints and not rear end. Any possibility maybe a bad transmission mount or the dofferential stabilization arm bushing?
Possibilities are always there, but in your case it's very low. I still think the most likely cause are the u-joints. Assuming they are original, you have to think about the fact, the vehicle is 21 years old.
 
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Old May 23, 2024 | 06:28 AM
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Seems like someone on this forum, or other Expy forum, was recently dealing with a clunk and they found a bad mount at the rear differential. Get someone to help and apply a little power (with the brake pushed) in forward and reverse to see if the rear differential housing is shifting. It should be pretty firmly mounted.
 
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Old May 23, 2024 | 08:47 AM
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Will have a look at this on the weekend. Thanks for the reply
 
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