Question about 1994 Ford Thunderbird
Had some help here ,everything is pointing to the altenator .Sorry to say after you have changed it twice but i think you have been unlucky and replaced the unit with one with the same fault ---was it a new one or scrapyard ?? start engine and then hold rpm at 1500/2000rpm and disconnect battery if engine continues to run then altenator is charging ,now turn everything electrical on and see if engine continues to run ,if it does then altenator is ok ¿¿¿¿sort of ??.Right now stop engine .Leave overnight and see if it starts (battery disconnected) if engine starts ok then it could be one of two faults,firstly a diode is faulty in the altenator ??or a DISCHARGE like a boot light on ??big amp in the boot for music left on? anything stupid in fact .Quick one here is if after following my advice then not sure ,disconnect altenator and leave battery connected ,if it then goes flat then it something on in the car with a drain of more than 21watts .Divide volts into watts gives you the amperage being drawn.If it starts then its the diode pack in the altenator.Best of british with it .
Posted on Jun 02, 2009
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Posted on Jan 02, 2017
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