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Loss of all electrical power


Vehicle Information: Year: 1981; Engine (size, modifications): 4.4?; Total Mileage: 61000; Transmission type: Manual;

Randomly loses all power at low speed or idle--no ignition, cranking, lights, displays, etc. It's as if the battery had somehow been removed from the car--radio pre-sets all lost, etc. Can be jump started sometimes, but not always. Condition will correct itself, but recovery takes one hour to three days. Problem may occur any time without regard to weather, temperature, etc. Do you have ideas for diagnosis and cure?

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