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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

06 6.0 alternator issues

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Old Nov 22, 2019 | 03:43 PM
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06 6.0 alternator issues

I have an 06 f250 that I bought and replaced the alternator because it was humming koeo. I put the new alternator on from auto dump and charged fine and the next morning my batts were dead. I charged them and found with the engine off key on or off that with the pigtail plugged into the back of the alternator it would drain my batts. I just unplugged the alt when I shut the truck off and the batts were fine. I ordered a new alt from lawdog and installed it and I hooked it up and plugged in the pigtail last and it started humming with koeo. I started it and it was charging fine but when I turned the engine off it would hum until I unplugged the pigtail. That alt is on its way back so they can send me a new one. In the meantime I brought the other one back to autozone and got a new one. I hooked everything up no humming started the truck and the alternator is not charging. Any help would be appreciated. thanks
 
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Old Nov 22, 2019 | 06:52 PM
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Thats alot of alternator problem

You may have short in wire harness

There isan alternator pinpoint test you need to go thru with DVOM
 
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