dying altenators - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 12-22-2013, 03:54 PM Thread Starter
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dying altenators

Just replaced alternator for the 3rd time 2 set of batteries. Still there is no more then 13 volts even when driving according to my CTS. Is there any fuse able links or fuses beside one in cab? I have 04 Eddie excursion. With rear entertainment. Nothing to crazy. Batteries are new. Have dc power alternator coming but put in new lifetime from O'Reilly till it comes. Just not sure of some thing else is going on. Thanks
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post #2 of 3 Old 12-22-2013, 06:22 PM
Fill it up again Dummy
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No there is nothing out of line if your using a stock alt. they are 110 amps and are underpowered for sure.
Voltage will drop down to the 11 volt range after starting due to the draw from the glow plugs and climb slowly as they phase off. This can last up to 2 minutes temperature dependant then the oem alt starts catching up.
But even upper 12 volts is common with the oem

DC Power alternators are great, I have the 190 amp and it never drops below 12 volts right after starting and climbs up to 14.3 as soon as glows cycle.

One piece of advise for your install: Get yourself two 4 gauge cables 24" long with eyelets on both ends.

Put one on output post of alternator then to positive post on passenger battery.

Put other on passenger battery ground post then to engine block. I put mine up on top of intake near alternator.

This will help with immediately charging after starting truck. There is a ground relay that shunts until glows cycle according to Ed w/Ficmrepair.com.
I will say it works so if your 185 amp or more I recommend it.

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post #3 of 3 Old 12-22-2013, 06:28 PM Thread Starter
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Hey thanks I am worried that there was something else was wrong
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