My 4wd switch has no power to it

Asked by Feb 11, 2016 at 08:40 PM about the 2003 Ford F-250 Super Duty Lariat 4WD Extended Cab LB

Question type: Maintenance & Repair

I have power at the fuse but when I test the wires
at the switch nothing. Worked a month ago. Sat for
a month tried it today and nothing no sounds no
4x4 light.

1 Answer

5,905

month is enough time for cables to corrode...not only to you want to remove the green stuff, but try to get some metal to expose with your wirebrush....clean up the positive terminal and the negative terminal....the ground wire going to the block and the loop on the red terminal what connects to the alternator...these 5 points...bolt 'em down and turn the key...solid Amperage will be restored....solid power to the ECU...as faults will happen with Brown Power~ so with a small wirebrush...will take about 20 minutes....wash your hands~

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