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Answered 2010-06-02 10:46:10

Unhooking a battery cable with the engine running is a bad idea. The voltage regulator in the computer will go full charge ( over 16 volts ) with out the battery in the system. If the Jeep is dieing at idle, it is most likely not the alternator. You need to check the idle motor that sticks in the back of the throttle body.

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