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Pulsating inboard lights

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Old Sep 16, 2009 | 09:09 PM
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Pulsating inboard lights

Hey guy's recently i have noticed that when starting truck in the morning the lights inside mainly on my electronic climate control screen and in dash lightly pulsating dimmer then bright.....i was thinking glow plugs but it hasn't been that cold...low's around 60...but could it just be the glow plugs first thing in the morning? even at those temps....?
 
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Old Sep 16, 2009 | 09:44 PM
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Might help if you gave us the yr mi and model of the truck. Have you tested the batteries lately?
 
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Old Sep 17, 2009 | 07:18 AM
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Year is a 2007 and has about 62,400 miles on it...could it be a battery issue already??? Typically batteries last 5 yrs...i thought...
 
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Old Sep 17, 2009 | 07:29 AM
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3 years (almost on the dot) for my batteries. If you are under 36k miles (and less than 3 yrs old) the dealership will replace your batteries - BUT only if you bring your vehicle to the dealership with the batteries in the vehicle.

I would advise you to also get your alternator checked.
 
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Old Sep 17, 2009 | 08:25 AM
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Glow plugs come on each start no matter what the temp. to my knowledge.
 
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Old Sep 17, 2009 | 06:22 PM
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Ok guy's now it is doing it pretty much constantly..if i shut motor off the lights do not pulsate but when engine is running i get a droaning sound and pulsating lights throughout vehicle including headlights....? What could this be? Could it be the alternator?
 
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Old Sep 17, 2009 | 06:36 PM
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Doesn't change my opinion! If you keep starting it this way, you will be buying a new FICM too.
 
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Old Sep 17, 2009 | 06:46 PM
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Guess i better head to the dealership then.....how long can i go till i cause damage to FICM?...I will have to make appt with dealer i am assuming so might not be till Saturday........
 
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Old Sep 17, 2009 | 06:53 PM
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Dealer just did a check on the batteries a month ago so its not the batteries....i guess alternator is the issue....
 
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Old Sep 17, 2009 | 06:55 PM
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Would an alternator be covered under the 5 yr/100,000 mile warranty???
 
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Old Sep 17, 2009 | 06:56 PM
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Sounds like an alternator pulsating voltage, usually caused by an open diode, most likely caused by a bad battery.FIY anything over 3 years on a battery is usually borrowed time IMHO.
 
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Old Sep 17, 2009 | 06:57 PM
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Originally Posted by 6litrefan
Would an alternator be covered under the 5 yr/100,000 mile warranty???
No 3year 36K
 
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Old Sep 17, 2009 | 07:01 PM
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Originally Posted by toolman05kr
Sounds like an alternator pulsating voltage, usually caused by an open diode, most likely caused by a bad battery.FIY anything over 3 years on a battery is usually borrowed time IMHO.
Great advice! Checking batteries one month does not guarantee that they are OK the next month.

The alternator is ONLY covered by the 3 yr / 36k warranty.

There is no way to tell how much stress and strain the FICM circuit board can handle.

Having the batteries individually load tested is free and easy. Testing the alternator at the auto parts store is also free and easy. Do yourself a big favor and get these things done soon.
 
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Old Sep 17, 2009 | 07:59 PM
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Im going to take the truck to auto-zone..i guess they will check the alternator for free...if i find out that that is the problem, how do i find out what amperage alternator i have, and where do you guy's reccomend me getting a new one...??? should i stay with Ford or will any brand alternator with the same ratings work???
 
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Old Sep 17, 2009 | 08:11 PM
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hey guys was just thinking, could this be a bad glow plug control module???
 
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