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Thread: Rear End Squeak

  1. #1
    Join Date
    Apr 2017
    Location
    San Diego, CA
    Posts
    232
    My Cars
    90' 735iL, 90' 535i, 93'

    Rear End Squeak

    Ever since I acquried my 5/90 735iL w/Lad there has been a squeaking in the rear end that is only comparable to the noise a spring mattress makes when two people are enjoying themselves on it .

    I thought my LAD was dying but after reading shoguns opinions on the quality of the system and discovering a very loose power steering hose I have been able to safely consider that the noise is coming from something in the suspension like a dirty bushing or ball joint. If anyone has any experience with a similar issue I would greatly appreciate any advice.

    This vehicle had one owner for 170k miles and the maintenance has been immaculate with the exception of some suspension neglect. Thanks in advance!
    Chaz

  2. #2
    Join Date
    Jun 2011
    Location
    NYC & Long Island & So FL
    Posts
    1,119
    My Cars
    '93 740il '84 633Csi
    Does the squeak happen if the car is parked, engine running and you jump up and down in the trunk (lid open of course!)? If you hear it, get a mechanic's stethoscope from HF (or a long handle screwdriver) and put it on the top of the shock tower bolts. That may help you isolate the noise. The shade tree solution is to spray the rear suspension with silicone lube which would quiet the rubber stuff. Happy hunting...

  3. #3
    Join Date
    Jan 2005
    Location
    Japan
    Posts
    54,654
    My Cars
    11/88 E32 750iL+98 E36M3
    I had such noise some years ago, turned out to be the dogbones. I had used some cheapo dogbones, they even did not have enough grease inside, did not last very long. Use quality dogbones like these http://www.bimmerboard.com/forums/posts/51276
    http://www.bimmerforums.com/forum/sh...-no-more-noise
    Last edited by shogun; 06-20-2017 at 03:43 AM.
    Shogun tricks and tips for the E32 series are HERE!

  4. #4
    Join Date
    Mar 2013
    Location
    Green Bay, WI
    Posts
    1,332
    My Cars
    1992 750il / 1991 560 SE
    Ditto on the bones. I had the same thing, replaced with two Lemforder ones. BavAuto.com had the best price, by far, at $39.00 each.

    10643 02 REAR TRAILING ARM LINK - LEMFOERDER $39.95 2 $79.90
    ______________________________
    1992 750iL

  5. #5
    Join Date
    Apr 2017
    Location
    San Diego, CA
    Posts
    232
    My Cars
    90' 735iL, 90' 535i, 93'
    I had suspected a dog bone issue from reading through the forums but wanted to hear it directly from the forums mouth.
    Is new the only way to go on those, or is it realistic to pull some from the junkyard?

    thanks again!

  6. #6
    Join Date
    Jan 2005
    Location
    Japan
    Posts
    54,654
    My Cars
    11/88 E32 750iL+98 E36M3
    That are wear items, on the junkyard you probably only find old ones with the rubber boots already damaged and the grease gone
    Shogun tricks and tips for the E32 series are HERE!

  7. #7
    Join Date
    Sep 2015
    Location
    San Diego, California
    Posts
    323
    My Cars
    94 740i, 03 525iT, 86 VW
    I am now having this issue after installing what I thought were decent dog bones, but the rubber still looks fine. Is there a particular spray lube that will do the trick? I do have some white lithium grease in an aerosol can.

  8. #8
    Join Date
    Mar 2018
    Location
    Asia
    Posts
    94
    My Cars
    1992 E32 M60 V8 RHD
    i remember once, on my older car (not a bmw, only a diesel car) i replaced upper arm brand new, not oem, its brand new, and it squeaks like crazy. i tried to lube the rubber, the inner collar that the bolt arm protrude through, no luck..i went back to the workshop, the mechanic lubed here and there, loosen and tighten everywhere, mentioned that my hub caused it... and i said, change it, and if the noise still there, im not gonna pay for the hub, and yes its still there. i told them to change to a new upper arm. and all the squeaks is gone..sometimes factory defect or low quality items caused unecessary noises..
    1990 730i M30B30 RHD - Sold
    1993 730i M60B30 RHD

    Others:-
    2012 Toyota Fortuner 4WD 3.0
    2012 Kia Optima 2.4L
    1990 Suzuki cavalcade (motorbike for hobby)

  9. #9
    Join Date
    Jan 2005
    Location
    Japan
    Posts
    54,654
    My Cars
    11/88 E32 750iL+98 E36M3
    Remove the the dog bones, take the rubber caps off, add grease, rubber caps on, doene, as I did here with pics https://www.bimmerforums.com/forum/s...-no-more-noise
    Shogun tricks and tips for the E32 series are HERE!

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