Thread: Did my glo plug relay fry my alternator in my '82 240D?
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Old 04-16-2011, 01:52 AM
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Fattyman Fattyman is offline
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Check your voltage while the car is running. Then while it's running unplug the glowplug harness that goes from the relay to the glowplugs. If you suddenly gain voltage you have isolated your problem. Sticking relay keeping the glowplugs energized. No alternator will be able to keep up with that current draw and yes, you can cook the alternator in short order. Fairly common.
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