Question about 1998 Ford Contour

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Car goes Dead

I put a Alternator on my 1999 Contour and I think it's charging like it should. I tried to take the Negative battery cable off with the car running and it goes dead . I checked the back of Alternator with a amp gage ind it shows it's charging. When you give it gas the meter goes higher , when it's just ideling it's about 13 volts. What could it be ? does anyone have any ideas on what I could do? Glen

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  • gcastino Jan 27, 2009

    But is

  • gcastino Jan 27, 2009

    when I check the back of the alternator I get a good charge . When you give it gas the meter goes very high. Is that right? And when I go to the battery and try to check it , it's just about 12.5 and is going lower with the car running. Why is the Alternater not putting a charge back into the battery? The Alternator works I hope. I think it does from the test I did to the back of it and it showed it was charging.

  • gcastino Jan 29, 2009

    What should the amps be? and someone said something about a mega fuse on the back of the motor that can be bad. Do you know anything about this fuse?

  • gcastino Jan 29, 2009

    Do you know anything about a mega fuse at the back of the motor that could be bad and stopping the charg from going to the battery. I', m not sure what it looks like or where it is for sure.

  • gcastino Feb 01, 2009

    Do you know anything about a mega fuse at the back of the motor that could be bad and stopping the charg from going to the battery. I', m not sure what it looks like or where it is for sure.

  • gcastino Mar 03, 2009

    Need a new Maga Fuse



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Normal charging volts are about 14.5, 13 volts is too low. The spec from Ford is 14.1 to 14.7. Broken wires or a bad connection are common.,

Posted on Jan 27, 2009

  • Dave Real
    Dave Real Jan 28, 2009

    If the charging volts are not between 14.1 and 14.7 the alternator is not putting out enough and you may need to replace it. But volts are only part of the story, the alternator must also put out amps to keep the car running. You can have good volts but still have bad amps.

  • Dave Real
    Dave Real Jan 29, 2009

    The amp output should be 130 at 2000 rpm. If you feel the alternator is working I would be checking for a connection problem. The most common area is the connection on the back of the alternator, check for corrosion which would be green or white in color.



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