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Thread: E30 wont crank when I turn the key, only some electrics turn on

  1. #1
    Join Date
    May 2018
    Location
    Rhode Island
    Posts
    21
    My Cars
    1986 BMW 325e

    E30 wont crank when I turn the key, only some electrics turn on

    I have a 1986 325e and when I turn the key, the car wont crank. The gauge cluster lights come on but they are very dim, and other electronics like my radio or the headlights wont turn on. Just noticed that my fuel gauge would dip down and my lights would dim when I press the window controls. What's the problem?

    Sent from my SM-G955U using Tapatalk

  2. #2
    Join Date
    Dec 2012
    Location
    Grandview, MO
    Posts
    493
    My Cars
    1989 Bmw325IC
    Low battery or bad battery connections. Check to see if battery cables are loose.

  3. #3
    Join Date
    Feb 2011
    Location
    Saskatoon, Canada
    Posts
    1,509
    My Cars
    '88 320i Mtech2; 2004 X3
    yep... you have a bad battery... either dirty/corroded connections, old battery not holding a charge, or weak alternator not charging the battery properly....

    1. remove, clean and reconnect the battery post connections ... use some boiling water and a wire brush
    2. charge the battery ... or get a boost from another car ... and start the engine
    3. check your alternator output ... should be about 14 volts with engine at 1500-2000 rpm
    ... forty-three years of driving before I get behind the wheel of a BMW .... and I am thinking, "why did it take me so long?"
    ... and then after another 4 years I can't believe that I have two of them !!

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