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Thread: Speedo issues

  1. #1
    Join Date
    Dec 2011
    Location
    Lancaster CA
    Posts
    5,051
    My Cars
    e34,e38,e39,e46,e70,e90

    Speedo issues

    Did a little research on this but wanted some expert opinions before I spend $$.

    On cold morning the speedo says 0, when I get to about 40-50 mph it slowly rises to about 10mph. After about 10-15 minutes of driving comes back to life. I thought this might be the speedo switch in the Differential.

    Then this morning, with the key rotated to pos 2 without the engine running, tach went to max rpm, started engine and it read normal rpms. The fuel gauge also goes to 0 on occasion.

    Since multiple items are failing I'm thinking its the display. I can get another display from another 1995 at the JY (Correct me if I'm wrong but the 95 has a unique electrical system from the earlier e34s). If I place the other display in, does it need coding?

    Normally when the speedo just reads 0, a resistor is burned out (so I've read), but in my case it comes back, and even when cold will partially read something.

    Change the display? Coding needed?

    02 e39 540i Sport (Son), 01 DINAN 7 (Me), 12 e70 X5 x35i (Mrs), 95 e34 525i (Daughter 2), 01 e46 325Ci vert (Daughter 1)

  2. #2
    Join Date
    Jan 2005
    Location
    Japan
    Posts
    54,747
    My Cars
    11/88 E32 750iL+98 E36M3
    I would change the caps in the cluster http://bmwe32.masscom.net/johan/dash...dash_caps.html
    Shogun tricks and tips for the E32 series are HERE!

  3. #3
    Join Date
    Dec 2011
    Location
    Lancaster CA
    Posts
    5,051
    My Cars
    e34,e38,e39,e46,e70,e90
    Quote Originally Posted by shogun View Post
    I would change the caps in the cluster http://bmwe32.masscom.net/johan/dash...dash_caps.html
    Excellent, I hate electrical work but a good friend of mine does circuit boards.

    02 e39 540i Sport (Son), 01 DINAN 7 (Me), 12 e70 X5 x35i (Mrs), 95 e34 525i (Daughter 2), 01 e46 325Ci vert (Daughter 1)

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