Monday, September 30, 2013
Why the Battery Goes Dead on My 1984 BMW 318I
When it comes to troubleshooting the dying battery on your 1984 BMW 318I it can be a bit tricky as there may be several reasons its happening. The most common issues involve manual error or electrical faults.
Alternator Belt
When you own an older vehicle you need to make sure youre keeping up with all maintenance, including tightening or replacing your alternator belt. If your belt is loose it will not crank the alternator properly which, in turn, will not generate electricity for you.
Key-off Drain
This model BMW has a computer on board, so having the ignition in off position and having the key removed should produce very little battery drain. If you hook up a voltmeter to the battery it should read between 20 to 50 milliamps. If its higher, then you may have an electrical device draining your battery when the cars off.
Bad Battery
Battery life is limited, so after several years of owning one if its giving you trouble, the issue just may be a bad battery. Take your car to a local mechanic, or even a parts store, and he will typically test for free and let you know if your battery is bad.
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