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#1
07-04-2002, 02:29 PM
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quick alternator question...
ok...i know my alternator is bad and i need a new one. i think it measured at 12.29 volts this morning. this may seem like such a stupid question, but is this low enough to make the dash lights light up? my battery was draining pretty fast, but it was about 6 years old, so i got a new one. how many volts is the car supposed to be running when in park and idling??
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#2
07-04-2002, 02:35 PM
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14.2 is optimal, 13.8-14.7 is acceptable. Dash lights sometimes come on because of a backfeed through the alternator when it goes bad.
__________________
ASE Certified Master Automotive Technician w/L1. ASE Certified Master Medium/Heavy Truck Technician. Certified EVT (Emergency Vehicle Technician)
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#3
07-04-2002, 07:56 PM
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You may need to raise the revs. above idle to register full charge volts. Mine sits on 13.9 v. with a fully charged battery.
__________________
Trevor, New Zealand. As a child, on cold mornings I gladly stood in cowpats to warm my bare feet, but I detest bull$hit! 
Last edited by Trevor; 07-04-2002 at 08:32 PM.
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