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  1. #1
    Ocho Cinco image's Avatar
    Join Date
    June 2006
    Sugar Land/Houston

    How many volts does your alternator put out?

    I recently had a battery die on me the other day. I Put a new one in and charged it and it has worked great. I was doodling arround today and hooked the multimeter on the battery while the car was running and suprisingly i was only getting arround 10.4. Thats pretty low.. I cant tell if there is a underdrive pully and I do not think my alternator is going out because that figure is way to consitant. What's your cars putting out?
    03 Oxford White Cobra
    Build #: 542 of 8394
    Build Date: 06/13/2002

  2. #2
    Crazy SVT Poster red91stang13's Avatar
    Join Date
    July 2005
    Yukon, OK
    Mines putting out 13.5 or so, it could also be your battery going bad
    2003 Terminator

    Billetflow 2.76 Upper
    Billetflow Idlers
    Steeda CAI
    Steeda Tri Ax
    Steeda Quadrant
    Mac O/R Prochamber
    Mac 3" Catback
    Metco Lower
    LFP Reservoir
    LFP Heat Exchanger

  3. #3
    Ocho Cinco image's Avatar
    Join Date
    June 2006
    Sugar Land/Houston
    I charged it back up because it died.... Maybe i odd to go and get it tested.

  4. #4
    Crazy SVT Poster JimBobWay's Avatar
    Join Date
    April 2003
    Surprise AZ
    Mine runs at 14.4 volts
    #3713 of 8394 - SOLD 5/26/2012
    Only 242 Satin Silver Metallic Coupes
    Xtreme Heat Exchanger w/ fans
    Borla Stinger Cat Backs
    K&N FIPK
    MGW Shifter - Red
    Goodyear GS-D3s all the way around
    315/35-17 rears
    H&R 1" Spacers
    Tinted Windows
    Snake in grill
    SS Incerts

  5. #5
    Ocho Cinco image's Avatar
    Join Date
    June 2006
    Sugar Land/Houston
    I was downstairs getting some chocolate and i just thought of something.. It cant be the battery. if the car is on and I am testing the leads its measuring the alternator's output correct? So i either have a underdrive pulley on the vehicle from the previous owner or a bad alternator...

  6. #6
    Insane SVT Poster
    Join Date
    July 2006
    alternator, bye bye, if you feel its not your alternator, disconnect battery with car running and see if car continues to run good. regardless of battery you should see a constant charge no less than 12.0 volts at 700rpm engine idle,
    i think we need a thread just for a funeral home for our alternators
    time of death
    miles or months of service
    details leading up to final farewell
    cost of funeral services and replacement cost of lost auto part family member
    cost's of beer to drown sorrow of loss of important auto part family member
    cost's of beer for party to accept and install new replacement auto part family member
    etc. etc. etc.
    Last edited by hawaiiancobra; 01-06-2007 at 10:15 PM.

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