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    dwyatt3314's Avatar
    dwyatt3314 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Mar 10, 2013, 08:07 AM
    Alt Gauge
    Have a 1994 F-150 Ford 4x4 the Alt gauge needle bounces back and forth when enging is running and when I turn on head lights they flicker on and off also radio light flickers when heD LIGHTS ON
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Mar 10, 2013, 10:31 AM
    Simply replace the voltage regulator and brush holder assembly on the back of the alternator. The brushes have worn down so much that they are bouncing. Use a Torx 20 bit driver to remove the four screws mounting the voltage regulator/brush holder assembly to the alternator. Insert a paper clip or drill bit to hold the brushes in place during installation. After installation, pull the paper clip or drill bit out. Much cheaper than buying a remanufactured alternator. Disconnect the negative battery cable, prior to beginning work.
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