Question about 2000 Ford Mustang

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Electrical system turns off when I try to start the car.

When I turn the key to start the car, instead of tunring the engine over, the entire dash goes dark and everything turns off. The factory alarm tries to go off when I turn the ignition back off. When this first happened, moving the positive terminal fixed it. But now even a thourough cleaning of the terminal and clamp gets me the same result, no start.

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I had a similar chronic problem with my 'stang. I eventually replaced the whole battery cable for both the positive and negative and never had any more problems with the electrical system. The factory terminals can get so corroded that they are no longer sufficient to support the high current of starting the car, and simply cutting the terminals off of the cables and attaching new generic ones from the autoparts store doesn't do the trick either.

It isn't too difficult to do this yourself once you can find the right length and type of cables. They run from the battery to the starter under the engine on the passenger side, along with the little wires that connect to the chassis for the negative and the accessories power for the positive.

Posted on Dec 17, 2008

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