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    Wtf is that sound

    What’s going on guys... so slowly I’ve been hearing this sound louder and louder in the last month, I think it might be the belt or clutch fan. This is my 1st e30 And I am not a Mechanic so I don’t know much

    Car: 1987 325i convertible stock m20 2.5




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    #2
    One of your belts is rubbing. Open the hood and look in there. It should be fairly obvious.

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      #3
      Originally posted by dnguyen1963 View Post
      One of your belts is rubbing. Open the hood and look in there. It should be fairly obvious.






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        #4
        Either belt is rubbing or slipping. Trying replace it and getting it tensioned properly


        1989 325is l 1984 euro 320i l 1970 2002 Racecar
        1991 318i 4dr slick top


        Euro spec 320i/Alpina B6 3.5 project(the never ending saga)
        Vintage race car revival (2002 content)
        Mtech 2 turbo restoration
        Brilliantrot slick top "build"

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          #5
          Get a can of belt conditioner and spray your alternator belt. Does the sound go away or change pitch? If there's no change, then spray your power steering belt. Once you know which belt it is, replace that one.



          Or just replace all three of your belts, they're probably overdue anyway.
          AWD > RWD

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            #6
            Sound went away on its lol.. im still going to use the belt Conditioner, thanks for the help guys


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              #7
              No, you still need to replace your belts. If your belt snaps at 10pm on 95 and it was your alternator belt, which also rotates your water pump, you'll overheat, your car will die and you'll be in a world of suck.
              AWD > RWD

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                #8
                Originally posted by Kershaw View Post
                No, you still need to replace your belts. If your belt snaps at 10pm on 95 and it was your alternator belt, which also rotates your water pump, you'll overheat, your car will die and you'll be in a world of suck.


                You are 100% right


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                  #9




                  same same... i have never ever had to use that shit. Where theres noise theres an issue.
                  Boris - 89 E30 325i
                  84- E30 323i

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