Register now to get rid of these ads!

Rear end creaks when pushing car in garage...what gives?

Discussion in 'The Hokey Ass Message Board' started by thekid1950, Apr 9, 2011.

  1. thekid1950
    Joined: Mar 2, 2009
    Posts: 68


    My 39 Chrysler has a brand new Ford 8" rear. The rear end creaks when pushing it forward or backward. Last year it only creaked when pushing it backward.

    The creak lasts about 1/2 turn of the wheel...then it's silent....then it creaks again.....then it's silent.

    I've put about 14,000 miles on it.

    Could the gears be too tight???
  2. borntowrench
    Joined: Jan 7, 2009
    Posts: 28


    loose lug nuts maybe?
  3. Howeird46Chev
    Joined: Nov 9, 2008
    Posts: 225


    Put some grease in it....
  4. moefuzz
    Joined: Jul 16, 2005
    Posts: 4,950


    If its a 'creak, creak, creak' then it is a universal joint.

    A worn universal joint will show small grooves worn into the surface when you remove the cups.
    This is the result of the needle bearings running dry at whcih point they will wear small grooves into the U joint. The U joint will then be said to have "brindled".
    The resulting 'creak creak creak' is the noise associated with the dry/worn needle bearings spinning in the brindled grooves.

    Last edited: Apr 9, 2011

  5. Or is rivet rivet rivet.......2x moefuzz
  6. u joint diagnostic
    Start it up,
    Foot on brake,
    Clunk indicates bad u joint.

    No clunk could still be u joint ..
    Trouble shoot,
    Jack up car and rotate spin wheels front and rear by hand,
    listen, feel for irregularities.
    Rotate drive shaft,
    Listen / feel for irregularities.
    Don't forget your stands.

    I'm going to guess it'd wheel related. 1/2 turn? Same spot? Rust ridge, debris in brake drum.
    If your gears were squeeking pushing it. It would be howling like the wolf man at a full moon when youdrove it.
    Last edited: Apr 9, 2011
  7. badshifter
    Joined: Apr 28, 2006
    Posts: 3,344


    Does it have a posi/limited slip? They can make noise and some need additives in the oil.
  8. kkustomz
    Joined: Jul 4, 2007
    Posts: 342

    from Texas

    U joint or brakes dragging
  9. silversink
    Joined: May 3, 2008
    Posts: 917


    after reading the title of the thread I was afraid to open it for fear of what I was going to see.
    Rusty springs from sitting is my 2 cents worth.
  10. Ebbsspeed
    Joined: Nov 11, 2005
    Posts: 5,535


    It likely isn't a ujoint unless you've got a 1:1 or 2:1 rear end ratio, based on you saying it happens every 1/2 turn of the wheel. I'agree with it being a dragging brake or backing plate to drum interference. Could also be a cracked wheel.
  11. LIL.TIMMYUser Name
    Joined: Jan 30, 2009
    Posts: 741

    LIL.TIMMYUser Name

    No kidding:) my rear-end goes "putt-putt-putt" alla time:p
  12. M_S
    Joined: Feb 20, 2008
    Posts: 542

    from SoCal

    Don't push so hard.
  13. Mr48chev
    Joined: Dec 28, 2007
    Posts: 29,606


    Rust on the brake drums from sitting all the time. Just enough surface rust to cause a squeek when that rust spot goes past the shoe again.

    I'd check the U joints though as that is a real possibility.
  14. chryco
    Joined: Dec 31, 2007
    Posts: 213

    from Winnipeg

    U - joint !!!!!!!!!!!
  15. Ditto!
  16. Rebel 1
    Joined: Oct 25, 2010
    Posts: 568

    Rebel 1

    I agree. My truck did the same and it was the locker.
  17. 1950Effie
    Joined: Sep 30, 2006
    Posts: 798

    from no where

    The U Joints have it!
  18. willowbilly3
    Joined: Jun 18, 2004
    Posts: 4,356

    Member Emeritus
    from Sturgis

    Or just look at them, most any U-joint dry enough to make noise will have rust powder coming out around the seals.
  19. Ebbsspeed
    Joined: Nov 11, 2005
    Posts: 5,535


    I'm really struggling trying to do the math that would point to a u-joint being the source of a creaking noise every half rotation of the wheel? Can anyone shed some light on what gear ratio you'd have to have in the rear end?

    Hell, it could be as simple as a wheel cover making the noise. Wheels do flex enough to sometimes make the wheel covers creak.
  20. Math :
    We are lacking critical info to make exact calculations here.
    so lets assume its a 3.0:1 rear gear.

    Drive shaft goes around 3 times for 1 wheel rotation correct?
    360 degrees in one rotation x 3 for the drive shaft = 1080 correct?
    ujoint at 90* correct? Yes and save for later.

    1 wheel rotation= 360 * and 1/2 rotation = 180* correct

    Lets pick just one u joint cup to watch .
    If the wheel goes around 180* that u joint cup went around 180x3 = 540* or 1.5 times.

    If it Only squeaked on the ( you pick any binding position, I'm picking upward) upward bind ; it passes this position only one time in 1/2 wheel rotation.
    Like this: 1/2 wheel "squeak" stop change direction 1/2 wheel "squeak"

    It will go past binding position 3 times for every 1 complete wheel rotation with a 3.0:1 gear but only once for 1/2 wheel rotation.

    My guess is wheel related also , 10 seconds in the drivers seat would determine drive shaft u joint problems. If its squeaky its clunky too.
    Joined: Dec 27, 2009
    Posts: 1,241


    It definately sounds like the clutches are "jumping".

    Solution : Make sure you have the Rearend filled with Gear Oil and make

    certain that you have a Posi additive.

    Good luck.

  22. i've had hubcaps make a creaking noise.
  23. Ebbsspeed
    Joined: Nov 11, 2005
    Posts: 5,535


    This would only happen if you were turning, not straight ahead or straight back.
  24. TwoLaneBlacktop
    Joined: Feb 23, 2009
    Posts: 213

    from Burien

    The Locker in my Sedan made noises like that for about a 1000 miles until it was broke in. Surely not 14,000............
  25. fearnoevo
    Joined: Nov 28, 2009
    Posts: 218

    from Iowa

    You should probably do some stretching to warm up before trying it again
  26. lvlynyrd
    Joined: Jul 25, 2010
    Posts: 49

    from Las Vegas

    Had a beater once that I just drove till it dropped. Someone riding with me once said "what's that noise coming from"? Cranked up my what was then outrageous (mid 1970's) stereo with my 15" home stereo speakers till the windows were shaking and said "what noise"?
  27. Engine man
    Joined: Jan 30, 2011
    Posts: 3,476

    Engine man
    from Wisconsin

    Arthritis? Can't you use a 4 wheeler to push it to save wear and tear on your "rear end"?;):confused:
  28. todztoyz
    Joined: Jun 21, 2008
    Posts: 176


    What type of lugnuts? Could they bottom out before wheel is tight? I'm thinking wheel/brakes, then u-joint.

Share This Page

Register now to get rid of these ads!


Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.