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The computer may not be enabling the fuel pump. If the fuel pump works when connected directly to the battery, it is good. If it won't work when connected to the wiring harness, then the computer might need to be reset. This involves disconnecting the battery for a little while, say, half an hour.

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Q: What could be the problem in a 2000 Cougar that has 12 volts going to a new replaced fuel pump but the pump won't run?
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