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NEED HELP: '87 325iS Running badly, brakes not working, help

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    NEED HELP: '87 325iS Running badly, brakes not working, help

    Hey guys-
    My girlfriends '87 325iS is having a problem with the brakes. The pedal is all the way tothe floor to get them to work at all, and even then they don't want to slow the car down much at all. we had this problem before, so re replaced the master cyl, and it was ok for a week, then the pedal started going to the floor again. Thinking that we ruined the master cyl by pushing the pedal too far while bleeding, we replaced it again months later (last weekend) and not the brakes are even worse. The car has a lot of miles, but the brake pads are new, the master cyl is new, and there is no sign of fluid leaks that she can see... any ideas? brake booster??

    the car also feels like its stumbling and falling on its face when you try and drive it. It used to do this when first started, but now it does it all the time.
    Both these problems just got really bad overnight while my girlfriend was home. The weather has been really cold, and it mighthave something to do with that, but when the car is warmed up, it still does it.

    Please help me figure this out, I have tried everything I can think of, and she is 45min away with the car.
    '88 M3.2 S54 Lachssilber/Black
    '07 335i Alpine/Black Sedan
    '12 X5 3.5i Alpine/Black
    iS Splitters For Sale, PM ME!
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    #2
    well, I just picked up a brake booster from a Euro E21 at a wrecking yard here in town, I am sure that this is the problem.
    later guys!
    '88 M3.2 S54 Lachssilber/Black
    '07 335i Alpine/Black Sedan
    '12 X5 3.5i Alpine/Black
    iS Splitters For Sale, PM ME!
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      #3
      Doesn't a bad brake booster cause the pedal travel to be limited and really hard?

      Fred

      '86 325 2.8i stroker - Arctic Blue
      '11 328i Sports Wagon - LeMans Blue
      Strictly Eta

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        #4
        yes, it did that, and now its all the wayto the floor with nearly no brakes. The engine also stumbles, which could be from a vacuum leak caused by the bad booster
        '88 M3.2 S54 Lachssilber/Black
        '07 335i Alpine/Black Sedan
        '12 X5 3.5i Alpine/Black
        iS Splitters For Sale, PM ME!
        sigpic

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          #5
          let us know how it goes
          Michael Spiegle

          '01 Ford Escape / Daily Driver
          '99 M3 / Track Car
          '87 325is bronzit / wtf car
          '06 Daytona Triumph 675 / Daily Rider

          Comment


            #6
            Bad brake booster would be my guese also, as when they fail you have a major vacume leak. plus the brakes with barely work.
            85 325e 2.7 ITB'd stroker

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              #7
              well, the E21 booster did NOT work.. the imput shaft was too long, so I cut it to length and drilled a hole for mounting the pedal to, but this thing leaked soo bad you could hear the vaccum leak LOUD in the car!! not cool...
              I had my gf order a new booster and I will install it in a few days when it gets here...
              what a pain in the ass!!!
              you M50 guys (trent, eric, stu) what did you do for the E21 booster to fit? hot did you modify the shaft that goes to the pedal??
              '88 M3.2 S54 Lachssilber/Black
              '07 335i Alpine/Black Sedan
              '12 X5 3.5i Alpine/Black
              iS Splitters For Sale, PM ME!
              sigpic

              Comment


                #8
                You ordered a NEW brake booster?

                Holy fuck... those are absurdly priced, I hope you got your discount on it.
                Tenured Automotive Service Professional - Avid BMW Enthusiast

                Vapor Honing & E30 ABS Pump Refurbishment Service
                https://mtechniqueabs.com/

                Comment


                  #9
                  Originally posted by Jordan
                  You ordered a NEW brake booster?

                  Holy fuck... those are absurdly priced, I hope you got your discount on it.
                  Only $281.72. :P

                  Comment


                    #10
                    naw, I paid $189 :P
                    '88 M3.2 S54 Lachssilber/Black
                    '07 335i Alpine/Black Sedan
                    '12 X5 3.5i Alpine/Black
                    iS Splitters For Sale, PM ME!
                    sigpic

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