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Old 07-18-2010, 04:23 PM   #11 (permalink)
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RaceJeep - '98 Jeep Grand Cherokee (ZJ) 5.9 Limited
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Usually, pulling the ECU fuse will reset the fuel trims. To confirm that the ECU has no power, crank the engine after pulling the fuse. If the ECU is de-powered, it will just crank and not start.

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