1997 - 2003 F150 1997-2003 F150, 1997-1999 F250LD, 7700 & 2004 F150 Heritage

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Old

May 15, 2010 | 06:20 PM

#1

jjkennedy98

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Battery Light

I have a 98 F150 4.2 5sp and when the engine is running at higher RPMs like when taking off or passing on the highway the battery light starts flickering but doesn't stay on solid and the voltage needle begins to jump around. It also does this while sitting still and reving engine.

Any ideas as to what may be worng?

Thanks

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Old

May 16, 2010 | 05:13 AM

#2

Bluegrass 7

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Joined: Sep 2006

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Most likely due for a new alternator.
Reason: the Brushes are worn and the surface is uneven. Results in the Brushes can't keep solid contact at elevated RPM.

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Old

May 16, 2010 | 08:53 AM

#3

steve(ill)

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i agree, alternator is getting bad.

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Old

May 16, 2010 | 09:10 AM

#4

jjkennedy98

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Thanks guys I appreciate it.

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1999, 2003, 2004, battery, f150, ford, heritage, light, truck

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