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RE: '83 533i electric glitch - please help!
You have an intermittent open in the accessories circuit, it's an 8 amp fuse in the forward-most row in the fuse box, don't remember if it's the first or second fuse from the left (driver's side). One of the itmes it powers is the idle control module, which is why the idle fluctuates wildly. With the ignition off, remove the fuse and carefully bend either of the contacts to make a tighter fit, then reinsert fuse. If the problem continues and you're SURE that the fuse is not loose, then you've got a wiring problem to cure, more than likely at the fuse box.
Kent
ps
The radiator fan is not electric, it is powered by the water pump pulley with a viscous clutch.
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