Headlights pulse whirl running. - Ford Powerstroke Diesel Forum
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Old 01-17-2013, 04:11 AM
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Headlights pulse whirl running.

I have 01 f250 and noticed the headlight pulse or almost flicker while running. Then I noticed dash lights and cab lights do it also. Is this a alternator problem or something crazy with wiring thanks.
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Old 01-17-2013, 07:28 AM
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Sounds like the Alt to me... Take it out and have it checked
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Old 01-17-2013, 07:32 AM
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Thanks. That was my first thought just wanted someone to second it. As soon as I get a chance ill have it checked.
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