Knock in rear with Dana 44

  1. NO51

    NO51 Well-Known Member

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    After my lift was installed between 10 and 20 mph when not hitting the gas I am getting a knocking sound sounds like possibly from the rear drive shaft and one have a fix for this?? I know on my Tacoma I added a driveshaft spacer after my lift to adjust the driveshaft angle anyone else experiencing this problem after a lift?
     
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  2. MarkY3130

    MarkY3130 Well-Known Member

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    Probably need to supply more details to get help with this. What lift components/kit was used?
     
  3. LLANERO

    LLANERO Well-Known Member

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    X2
     
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    NO51

    NO51 Well-Known Member

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    RC 2.5 coil lift with Fox shocks
     
  5. Carlton

    Carlton Well-Known Member

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    Is it a constant knock, or a random occasional knock?

    If constant, 2.5 shouldn't be enough lift to cause issue with the rear drive shaft. If it was a taller lift, I'd suggest adjustable control arms.

    There could be a driveshaft issue if the axle was dropped too much without disconnecting the shaft during install of the lift. Additionally, improper re-install if it was disconnected can cause issues.

    If it is more of an intermittent knock, it could be a few things. 1. Over torqued or under torqued components. 2. A bushing sitting funny. 3. The coil spacers. Make certain they are installed from top to bottom: Spacer, factory isolator, coil spring. If they are out of order they will make a thump and crackling noise.
     
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    NO51

    NO51 Well-Known Member

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    It’s not a spacer lift so I know that’s not the issue, it makes the noise between 10 and 20 mph all the time I will have to get under and check on the torque of the bolts or just see if I notice anything that seems out of place I’ll have to contact the shop to see if they disconnected the driveshaft during install
     
  7. LLANERO

    LLANERO Well-Known Member

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    Is ts actually a noise or is it vibration?
     
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    NO51

    NO51 Well-Known Member

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    It’s a knock like as the driveshaft turns it seems
     
  9. Titan2727

    Titan2727 Banned

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    Check underneath really good, hopefully one of the techs didnt get stuck when they lowered off the lift.
     
  10. JMONEZ

    JMONEZ Well-Known Member

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    I have the same sound, between about 7-16 mph 2 or 3rd gear with foot off gas and slowing down, can’t seem to figure it out( driveshaft, rear diff, suspension, wheel bearing) no clue! Knocking rotational noise and I can feel it also. I have a coil lift, 2.5 rubicon express
     
  11. OP
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    NO51

    NO51 Well-Known Member

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    Glad I’m not the only one my buddy just bought a lifted Sahara with the Jeep lift already installed and his is also making the same noise
     
  12. D Arnett

    D Arnett Member

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    I also have a constant knock between 3rd and 2nd only off the gas or steadily slowing down dealer appointment in a week. Checked every bolt under checked everything lol
     
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    NO51

    NO51 Well-Known Member

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    Keep me updated it’s annoying at this point
     
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  14. Boothorp

    Boothorp Well-Known Member

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    I get the same thing! It's driving me mad! for me its pretty noticeable between 8-35 mph with foot off the gas. I really want it gone!

    I have a 2.5 JKS with RK front adjustable control arms.
     
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  15. Boothorp

    Boothorp Well-Known Member

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    Does anyone that experience this have aftermarket rear control arms or is everyone stock? I have stock for now.
     
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