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Discussion Starter · #1 ·
On my 2012 jku.. I had the diff fluids changed after 500 miles.. Ever since then the jeep feels heavy and sluggish. It's regeared to 4.88.. Ran smooth and felt very strong before then.. Any possible way the diff was overfilled causing this?? Or wrong weight??
 

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Its possible the pinion wasnt set to the right torque, or incorrect number of shims etc... Driving the few hundred miles went well until the parts have worn enough from being incorectly installed. Hopefully this isnt the issue, maybe im just being a pessimist. Fingers crossed.
 

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Discussion Starter · #5 ·
I did break it in correctly well I hope I did.. Just wondering how it went from running like a champ to feeling sluggish after the diff fluids was changed...
 

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The Bad Guy
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You said "you had" the fluid changed, implying someone else did the change. Why don't you check the fluid level to be sure? If anything its low. It's nearly impossible to over fill if you have stock covers.
 
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