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Old 09-21-2013, 09:32 PM
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3rd alternator just died within a year help

Ok guys idk what I'm missing here. But please help lol

Bought my truck in Nov last year.

05 f350

Truck died not to long after buying. A buddy who works at ford said it was my battery's bc the battery light wasn't on. So I bought 2 new battery's. Well a few days later same thing. So took it to his work. Got a brand new shinny alternator.

Boom truck was back. Started like a champ nice and quick. A few months later same thing. I called him, said I got a bad alternator. So he swapped it. Yet again truck was back working perfect.

Now here I am 2 months later and I noticed the truck cranking a little slow today. Then my windows seemed slow up and down. Went to go run to the store quick and truck almost didn't start. Lights were dim. Ran to the store. Left it running. Got home parked her. And just as I thought. Click click click won't turn over.

So if I have had 3 alternators. 2 new battery's. And this keeps happening. What could it be????? Ps kill me


Thanks guys!!!!
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Old 09-21-2013, 09:57 PM
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Were the alts OEM? Or did he go to Napa? For some reason the quality requirements for aftermarket alternators for our powerstrokes just isn't there. IMO I think they are putting crappy regulators in them. Make sure there isn't something in your system that isn't drawing power while just sitting.

Fwiw DCPower Engineering is the way to go when it comes to alts

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Old 09-22-2013, 05:06 AM
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A couple of things:

If you can afford it, get a DC Power alternator in 180 amp or higher size. Your power issues will be solved. If you cannot, go OEM. If you have a single Alt truck then get the 140 amp OEM upper Alt that is used with the dual Alt trucks. It is a direct bolt on replacement for the standard 110 amp upper Alt.

Check you ground wires, and even add some additional cables to parralell the existing ones. Do a search for the "Big 3 upgrade".
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Old 09-22-2013, 06:03 AM
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You need to fix your electrical issues soon or you'll be buying a new FICM also.


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Old 09-22-2013, 06:10 AM
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X3 on the DC alternator. Its well worth the money just for piece of mind knowing you've got a quality unit, and the truck has the power it needs that an OEM unit cannot provide
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Old 09-22-2013, 08:50 AM
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Quote:
Originally Posted by Term3 View Post
You need to fix your electrical issues soon or you'll be buying a new FICM also.


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Good point! The OP will need to check the FICM main power voltage once up and running normally. If it's getting low, injectors will get damaged.
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Old 09-22-2013, 11:52 AM
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Quote:
Originally Posted by skanj0 View Post
Check you ground wires, and even add some additional cables to parralell the existing ones. Do a search for the "Big 3 upgrade".
This is a very good point also, I gained a half volt just by changing all my battery cables and cleaning both ground points to bare, clean metal when I did mine with 2/0 cables. I didn't put them in parallel with OEM ones as there wasn't much room in front of the rad once I put the 2/0 cable across.


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