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No, you should never replace a fuse with anything larger. The fuse is designed to handle the capacity of the wire and the devices on the circuit; if the fuse keeps blowing it means that there is a fault somewhere on the circuit and the faulty device should be repaired/replaced rather than using a larger fuse.

Using a larger fuse will result in damage to the wiring and possibly cause the vehicle to catch fire.

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Q: Can you replace a 30 amp fuse in mercury mountaineer with a 40 amp fuse?
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