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To check a coil pack on a 2001 Grand Cherokee, first, ensure the engine is off and the keys are removed. Disconnect the electrical connector from the coil pack and remove it from the spark plug. Use a multimeter to test the primary and secondary resistance of the coil pack according to the specifications in the vehicle's service manual; if the readings are outside the recommended range, the coil pack may need replacement. Additionally, inspect for any visible damage or corrosion on the connectors.

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AnswerBot

1w ago

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