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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

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Old 12-28-2003, 03:28 PM   #1 (permalink)
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Recentlly purchased a 82 320i 3 months ago and have had no problems until now. I cleaned my battery terminals with bakeing soda and water and failed to notice that the solution had dripped on to my alternator ground wire and eventually ate through it. When I figured out what I had done I had to do a quick fix and tape/ mount it back on to the starter and it started right up. Thinking that I could wait until the weekend to do it right. Wrong! As I was driving down the freeway my RPM gauge and oil temp gauge started jumping like crazy and then a small pop was heard and the car died. I checked the ground wire again but to no avail. The car turns over but never runs. Yes there is gas in the car. But I am not sure if by having the ground wire bounceing off and on the alternator would have smoked my ignition coil. Any thoughts and suggestions are welcomed.

Thanks to all, Eddie
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Old 12-28-2003, 08:05 PM   #2 (permalink)
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Testing the coil is a done with an ohm meter.
Pin #1- to pin #15+ is 50 ohms.
Pin #15+ to the center tower is 6000 ohms.

I would be suspect of the fuel relay.

Here is an e21 ignition diagram.



Here is the fuel system.



Later
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