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    Whining noise on turn's while accelerating

    Hey R3v, my car is currently suffering from two problems. First is a groaning noise while moving forward (I'm pretty sure its a rear wheel bearing), and the other's a whining noise while making turns and accelerating. I made a video cause there's no way you guy's would know the sound I'm hearing by typing. My front wheel bearing failed about 4 weeks ago and I didn't replace it until today, so it's quite possible the front wheel bearing was masking the groaning noise from the rear. I also installed a new LSD differential yesterday so a bad differential is also a possibility. To me, it sounds like the rear wheel bearings are failing, more so after watching the video I recorded. Around town/ under 15mph it's hard to say what's causing the sound.

    The high pitch whining noise only happens when you make a 90 degree turn and accelerate moderately hard, maybe quarter throttle. The reason I swapped the differential out was because of the whining noise, and obviously the noise wasn't caused by the diff. because it's still happening. The groaning noise possibly could be caused by the new differential, but again the bad front wheel bearing could have been masking the noise for the past 4 weeks.. noise could have been present with the original differential installed I have no clue. No noises where present on the car 4 weeks back.




    -Wheel bearing's on the car most likely are original and have over 240k miles. I'd hate to have to remove the differential again and return it to the junk yard, the LSD diff had exactly 230,090 when removed from the junkyard.

    -Rear groaning noise wasn't present 4 weeks ago; however noise from front wheel bearing could have been masking/covering up the noise happening in the rear..

    -The whining noise while making turns on acceleration started a few weeks after the front wheel bearing started to fail, I decided to take the opportunity to swap out the "faulty differential", but obviously the original differential wasn't faulty/ broken because the noise is still happening.



    https://www.youtube.com/watch?v=N69RG7eZDW8
    0:10-0:36 seconds the car is in Neutral. Whining noise is at 0:04 and 0:43
    Last edited by KIRIEIW; 03-23-2016, 02:05 PM.


    1992 M tech 2 Convertible - S50 Swap
    1992 e34 Touring- S50 Swap
    1992 325i-S50 Swap (SOLD)

    1995 e36 M3 Mugello Red - S50 (SOLD)
    1991 325i Convertible Laguna Green (SOLD)
    1987 325i (SOLD);1992 M tech 2 Convertible (SOLD)
    1988 325i Convertible Alpine White (SOLD)
    1991
    Brilliantrot Convertible 80k Miles (SOLD)
    1992 325i Convertible Schwarz (SOLD)
    1992 318i Convertible Project-Finished (SOLD)

    #2
    No one huh? After driving the car around more I've noticed the groaning noise goes away while turning at high speed's, I'm now almost positive its a wheel bearing, specifically the rear passenger side. Now as for the high pitch whining noise (which also happens on the passenger side) I'd love suggestions on what to check out/ possibility's for the noise.


    1992 M tech 2 Convertible - S50 Swap
    1992 e34 Touring- S50 Swap
    1992 325i-S50 Swap (SOLD)

    1995 e36 M3 Mugello Red - S50 (SOLD)
    1991 325i Convertible Laguna Green (SOLD)
    1987 325i (SOLD);1992 M tech 2 Convertible (SOLD)
    1988 325i Convertible Alpine White (SOLD)
    1991
    Brilliantrot Convertible 80k Miles (SOLD)
    1992 325i Convertible Schwarz (SOLD)
    1992 318i Convertible Project-Finished (SOLD)

    Comment


      #3
      I listened to the video, but can't think of anything that would make a whining noise on the passenger side while you are making a turn. Power steering comes to mind, but it is on the opposite side.

      Comment


        #4
        Originally posted by dnguyen1963 View Post
        I listened to the video, but can't think of anything that would make a whining noise on the passenger side while you are making a turn. Power steering comes to mind, but it is on the opposite side.

        Thanks for the reply, I know it's strange, but it's 100% coming from the rear passenger side. I put my Dad in the back seat to help me pin point where it was coming from, and that's definitely where it's coming from. I kinda doubt a wheel bearing could make that noise from the change of load, so I was thinking maybe the CV joints but then again I have no idea what a bad CV joint sounds like from personal experience.


        Sent from my iPhone using Tapatalk


        1992 M tech 2 Convertible - S50 Swap
        1992 e34 Touring- S50 Swap
        1992 325i-S50 Swap (SOLD)

        1995 e36 M3 Mugello Red - S50 (SOLD)
        1991 325i Convertible Laguna Green (SOLD)
        1987 325i (SOLD);1992 M tech 2 Convertible (SOLD)
        1988 325i Convertible Alpine White (SOLD)
        1991
        Brilliantrot Convertible 80k Miles (SOLD)
        1992 325i Convertible Schwarz (SOLD)
        1992 318i Convertible Project-Finished (SOLD)

        Comment


          #5
          It might be one of the bearings inside the differential probably on your passenger side...


          Sent from th
          sigpic
          1987 325e Lachssilber w/ MarkD chip and late bumpers, Zender EVO spoiler, s3.25 LSD

          Originally posted by nando
          I don't think there's really strong evidence that ZDDP harms cats.

          Comment


            #6
            Originally posted by itsonlygeorge View Post
            It might be one of the bearings inside the differential probably on your passenger side...


            Sent from th
            That's what I originally thought, but the same noise was occurring with the original differential. One of the main reasons I swapped it out was because of this noise, and swapping it out didn't fix the problem.


            1992 M tech 2 Convertible - S50 Swap
            1992 e34 Touring- S50 Swap
            1992 325i-S50 Swap (SOLD)

            1995 e36 M3 Mugello Red - S50 (SOLD)
            1991 325i Convertible Laguna Green (SOLD)
            1987 325i (SOLD);1992 M tech 2 Convertible (SOLD)
            1988 325i Convertible Alpine White (SOLD)
            1991
            Brilliantrot Convertible 80k Miles (SOLD)
            1992 325i Convertible Schwarz (SOLD)
            1992 318i Convertible Project-Finished (SOLD)

            Comment


              #7
              what about rear wheel bearing?
              sigpic
              1987 325e Lachssilber w/ MarkD chip and late bumpers, Zender EVO spoiler, s3.25 LSD

              Originally posted by nando
              I don't think there's really strong evidence that ZDDP harms cats.

              Comment


                #8
                Originally posted by itsonlygeorge View Post
                what about rear wheel bearing?
                That's my guess as of now, I've never heard of a wheel bearing making a high pitch noise on turn's, but I guess anythings possible and it does seem like the rear wheel bearing/s are the cause of the groaning noise while moving.


                1992 M tech 2 Convertible - S50 Swap
                1992 e34 Touring- S50 Swap
                1992 325i-S50 Swap (SOLD)

                1995 e36 M3 Mugello Red - S50 (SOLD)
                1991 325i Convertible Laguna Green (SOLD)
                1987 325i (SOLD);1992 M tech 2 Convertible (SOLD)
                1988 325i Convertible Alpine White (SOLD)
                1991
                Brilliantrot Convertible 80k Miles (SOLD)
                1992 325i Convertible Schwarz (SOLD)
                1992 318i Convertible Project-Finished (SOLD)

                Comment

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