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Car behaves like a bucking bronco at low speeds

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    Car behaves like a bucking bronco at low speeds

    While driving at slow speeds at my car behaves like a bucking bronco. No real issue if I'm just excelerating thru the gears even though I think it could be smoother.

    So, is this possibly a transmission issue, throttle linkage issue, something else?

    Your thoughts/inputs would be greatly appreciated.

    Thanks.
    - 90 325is, 5 spd

    #2
    Has it always been doing this or just recently? Only when cold?

    1991 325iS turbo

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      #3
      It's been doing this for quite some time now and it exhibts the same behavior with the engine cold and at operating temp.
      - 90 325is, 5 spd

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        #4
        Did you pull the head off at any point? Is it backfiring into the manifold? Mine did this when the timing was 180 degrees off.
        Originally posted by LJ851
        I programmed my oven to turn off when my pizza was done, should i start a build thread?

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          #5
          Did redo the head when I got the car due to a broken rocker arm. Doesn't seem to be backfiring tho. Perhaps I need to re-adjust my valves.
          - 90 325is, 5 spd

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            #6
            Is the idle rough or unstable? If so I'd suspect intake leaks and or a problem with the AFM. It could have a worn spot in the resistance track or a stinking vane.
            The car makes it possible, but the driver makes it happen.
            Jim Levie, Huntsville, AL

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              #7
              Originally posted by jlevie View Post
              Is the idle rough or unstable? If so I'd suspect intake leaks and or a problem with the AFM. It could have a worn spot in the resistance track or a stinking vane.
              Agreed, take a sniff around and find out

              ;)
              1991 318iS
              1992 911
              2006 330i 6-Spd ZSP people hauler

              Gone:
              1989 M3 S50B32, 6-Spd
              1990 325ix 5-Spd

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                #8
                Found a broken hose under the throttle body. Fixed it so will just have to continue to monitor. Also had the valves readjusted so am keepin gmy fingers crossed.
                - 90 325is, 5 spd

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