Quote:
Originally Posted by ACHiPo
Turned the key to "ON" and the radiator fan turned on immediately, with the ammeter dropping appropriately. No ignition light. Not sure if I mentioned it, but last week the manual fan switch broke, so I couldn't turn the fan on. Not sure why a normally open switch is now closed? Started the engine and the ammeter didn't move (no charging). Shut down the engine and flipped off the battery switch.
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The radiator fan circuit does not run through the ignition switch. That's so the fans can come on when they need to (usually through the thermostatic switch in the lower radiator hose) even if the ignition is turned off. That is really strange that it would come on with the ignition switch. Could you have hit something? Or pulled something loose?