Sporadic Dead battery 2001 SL1

Discussion in 'Saturn S-series' started by havenfun2day, Dec 26, 2005.

  1. havenfun2day

    havenfun2day Guest

    My son has a 2001 Saturn SL1… 96,000 miles. In early November we put
    new battery in his car because he would have to jump start it ever
    time he wanted to leave. After two weeks, he started having th
    following problem: About once per week he will go out to leave fo
    college and the battery will be dead. Last week when it did it, I put
    volt meter on it and it had less than 7 volts (my memory can’t recal
    the exact number :confused: ). No lights, horn, nothing at all.
    We hooked up to a portable power pack and it jumps up to 12 volts an
    starts right up. Once running it is upward of 15 volts.
    We took the battery back to AutoZone. They charged it for 30 minute
    and then tested it. The battery is good. We thought maybe the amp wa
    staying on so we unhooked the main power cable to it. Today it die
    again….? No alarm or other added equipment.

    havenfun2day, Dec 26, 2005
  2. havenfun2day

    Bob Shuman Guest

    Sounds like the alternator is bad so it is not charging. The "new" battery
    ran down ...

    Bob Shuman, Dec 28, 2005
  3. havenfun2day

    James1549 Guest

    15 volts is a bit on the high side. 13.8v is optimum. Maybe a problem,
    maybe not.

    Once the battery is charged to the proper level, turn off engine and
    all accessories, dome lights, etc. Disconnect either battery cable.
    Using an amp meter across the open circuit, check to see what kind of
    draw it has. My guess is that it should be below .1 amp. Much more than
    that, will draw down a battery in time. Check to be sure your glove box
    or trunk light is not staying on. You can do the same thing with a
    voltmeter but I prefer an amp meter for accurate readings.

    Sometimes a defective alternator can cause a draw when shut off. That
    would show up when doing a draw check.

    If you find an amp draw with everything shut off, you need to start to
    eliminate circuits by pulling fuses one at a time. Even pull relays one
    at a time while watching the meter. Eventually you will get to the
    bottom of it.

    James1549, Dec 29, 2005
  4. havenfun2day

    marx404 Guest

    Have the alternator checked out, it could be bad. Also, if you have a Delco
    battery, get rid of it and get another brand, they are troublesome.

    marx404, Dec 29, 2005
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