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Old 12-06-2011, 03:07 PM
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What Alternator To Accomodate Acc.

My alternator seems to be struggeling now with keeping the voltage up. At idle the voltage hangs out at about 13.3 - 12.9. I just ordered a set of long range 130watt lights and a set of driving lights at 100watts. Also the truck is fully loaded with seat heaters and all. I have no aftermarket stereo but I do charge a variety of accessories and tow, so trailer lights. Can I just go with the 140amp ford alternator or should I jump up to the 185 or 190 DCpower alternator.
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Old 12-06-2011, 04:50 PM
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To answer your question correctly, you would have to know what your system amp draw is. Do you have access to a DC clamp meter? Having said that I don’t think you could go wrong with a larger unit.
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Old 12-06-2011, 05:02 PM
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i like this one for a small upgrade: Stealth Automotive Inc - DC Power Engineering Alternators :: 190 Amp OEM High Output Alternator for 2004 -2007 Ford F-250 Super Duty 6.0L V8 Powerstroke Diesel

they go up way higher in AMP but they are more expensive as well...
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Old 12-06-2011, 08:41 PM
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No I dont have access to a DC clamp meter. I would like to just get the OEM 140 amp but I don't want to buy that and realize its not enough and that its running at its max the whole time.
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Old 12-06-2011, 08:55 PM
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i had the 190 OEM DC power alt on my excursion and i very much liked it... i also had in dash touchscreen, flip down tv, amps, subwoofers, along with having many things plugged in and it never gave me a problem.....
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Old 12-06-2011, 09:56 PM
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i have the 190 that Raul is talking about.... I'm very happy with it
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Old 12-06-2011, 10:08 PM
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Just put in an order for the 185 from DC Power. Didnt see the need to pay the extra money for the 190.
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Old 12-07-2011, 03:23 AM
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What Timvo said. I went with the 190 (actually should be delivered today) but that was just me...The 185 is several dollars cheaper and I am not sure the extra 5 amps is worth the extra money. If the extra 5 amps will make a big difference, you may want to go with a 225 amp, BUT they are really expensive.
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