volts gauge reads low

Discussion in 'Technical' started by streetrod77, Mar 27, 2006.

  1. streetrod77

    streetrod77 Member

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    I have been wireing up my gauges for about 2 weeks now. I finished last night but the battery was drained I think. I boost the car off & with the booster cables attached to the truck, the volt gauge reads 14. Then when I take the cables off the volt gauge drops to 8. Even when the car is running all the lights a dim. Does this mean I need a new battery or is it the alternator? I did check the water in the battery & it looks okay. Before the gauges were put on it ran fine but When it got real cold the winter I did have to boost it off once.
     
  2. 71gold

    71gold Frank Cooper Supporting Member

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    have the alt. checked...make sure the "exciter wire" on the alt. is plugged in.
    i bought 2 batts. because of mine not being plugged in :coco: ...frank...:bouncy:
     
  3. T.L.

    T.L. Banned

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    Your Alternator took a dive...
     
  4. streetrod77

    streetrod77 Member

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    Both of you are right, Alt has passed. Now the question is do I put a stock one back on or do I put a more powerful one on. Auto Zone said the stock puts out about 60 amps. Performance Distributors has a 100 amp for about $150. the engine is not stock plus a have all aftermarket gauges, i will be putting some bass in the trunk one day, & maybe air bags on the front if this means something.
     
  5. Andysutt

    Andysutt '72 Comet GT

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    Whether your car is stock or not... the bigger alternator will be used.
    If you get a alternator with a 100 amp over the 60 amp, it just means it will recharge your battery at a faster rate and provide more power for other things also.
     
  6. Mavaholic

    Mavaholic Growing older but not up!

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    Yup, I'd go for the bigger one.
     
  7. 71gold

    71gold Frank Cooper Supporting Member

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    i have a bolt on, late model, stock, 1 wire, ford, 100 amp. alt. ...$100...talk to someone at an alt. shop...frank...:bouncy:
     
  8. streetrod77

    streetrod77 Member

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    Thanks for the help. I have never had a alt. problem. Maybe thats why I have to buy a battery for my pickup every 3 years or so. Maybe I need to upgrade it too.
     
  9. Andysutt

    Andysutt '72 Comet GT

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    If your batteries last 3 years... its not the alternator. Bad alternators can kill batteries in days
     
  10. don graham

    don graham MCG State Rep

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    i've used the summit 1 wire 100 amp alternator for a couple of years now with no problems. $139.95. i'd go with the bigger one.:)
     
  11. streetrod77

    streetrod77 Member

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    O, maybe I need to buy a better battery that those Wal-Mart ones. I called the company this morning before going there but someone gave me the wrong price. Now the price is $230. I hate that. Sounds like to much but they are local. He also said that the one wire will only have to go to the positive side on the battery & zip tie the other wires some where out the way. Is this correct? I may have to go with summit. Any other companies I need to check for?
     
    Last edited: Apr 3, 2006
  12. don graham

    don graham MCG State Rep

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    i just went to napa online. they have 90/100 amp alternators for 77 comet for $90.99 remanufactured. $55 core charge so you'd have to take your old one in. i'd bring it in to match the wiring anyway. hope this helps.:)
     
  13. 71gold

    71gold Frank Cooper Supporting Member

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    this or an alt. shop...take the old one to get it "clocked" right...frank...:bouncy:
     
  14. sierra grabber

    sierra grabber Certifiable

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    3 years is the average lifespan for cheap batteries.
     
  15. streetrod77

    streetrod77 Member

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    I will check with NAPA & stop buying those cheap batteries. I didn't know they made a difference.
     

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