1999 - 2003 7.3L Power Stroke Diesel

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Battery light flickers sometimes???

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Old

May 6, 2018 | 06:17 AM

#16

Christopher Pooler

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Joined: May 2018

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Battery Flicker

I know this thread is ancient, but If you ever come across this problem on a 7.3, it is very possible that your IDM(Injector Drive Module) is about to fail. May have water inside causing this symptom. I changed my IDM, and lo and behold, it went away.

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Old

May 9, 2018 | 12:44 AM

#17

brian42

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Joined: Dec 2006

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From: San Diego, CA

In all the years I've owned Ford trucks, every time my battery has light come on it was an alternator issue.

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Old

May 9, 2018 | 04:54 AM

#18

Whitey Ford

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A simple $3 digital meter in the cigar lighter would see a failing alternator that can and will take the batteries with it, quickly. The thing to watch is the morning voltage and drop under load, on the first start.

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Old

May 9, 2018 | 06:16 AM

#19

Sous

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Joined: May 2014

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From: Lake Hartwell, GA

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Some brake controllers have voltage readings on them as well, I know my Tekonsha P3 does.

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Old

May 9, 2018 | 10:43 AM

#20

SpringerPop

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From: La La Land

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Quote:

Originally Posted by Sous

Some brake controllers have voltage readings on them as well, I know my Tekonsha P3 does.

Yup. That's the mode my P3 rides around in about 98 percent of the time.

Pop

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1999, 2000, 2003, alt, battery, diesel, econoline, excursion, f250, flashing, flicker, flickering, flickers, ford, light, truck

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