Question about 1993 Ford Taurus

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93 Taurus discharges when i turn on the heater

New alt & battery but it discharges when i turn on the heater..runs battery down what can it be?

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  • Les Zimmer Apr 14, 2009

    had it tested its a good alt

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Ck wiring be sure all is good and snug ck voltage at pos wire on back of alt. if your not getting 13.25 volts out it is a bad unit.

Posted on Apr 14, 2009

  • james shack Apr 15, 2009

    what voltage are you getting from alternator how many volts

    shack


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Volt gage!!


that sounds about right . the voltmeter just tells you how many volts the battery is holding,if you turn your lights on high beam turn your wipers on and your heater all at the same time,as soon as the current being used is greater than the alternator can charge , you will see the needle on the voltmeter drop back that is normal and logical. if you are running spotlights etc you may need a higher wattage alternator a lot of vehicles come out with 55watt alts.and the owners change the alts. to 100 watt alts... NOW as long as yours is not dropping below 12volts it is not draining your battery so there will be no ill effects it just means the alternator is working close to its capacity-------------------- there you go ,I would not be worrying too much unless it flatens your battery Idony think you need worry "youdoit"

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