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Old 05-30-2014, 01:07 PM

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Should of Joined Forum First

I bought a well maintained 2005 F250 XL Extended Cab a couple of months ago. I had 1995 E350 with a 7.3., so I am new to the 6.0l. This thing is fantastic! I did some searching on this forum and read that maintenance and monitoring are the key to reliability of the 6.0l, so I purchased a Edge Insight and everything looked good except the voltage at startup was low and barely stayed above 13v while under load. I took it to Autozone and tested it, and said batteries good, valtage regulator bad. After a new Motorcraft high amp alternator, it was better under load but not where it should be. Well, I did some searching (should have done this before I swapped alternators) and went back to autozone, and had them test disconnected batteries individually and one was bad. Also, there was no problem with my alternator because the guy tested it before the glow plugs shut off (should have searched this too). I believe this was not the case on my old 7.3, because when the wait light went out the glow plugs shut off.

I will know next time to search this forum before I attempt any more maintenance or repairs.
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Old 05-31-2014, 08:02 AM


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You should always have the batteries and alternator tested off of the truck.
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Old 06-01-2014, 12:36 PM
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Glad to have you - to the ORG!!

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Old 06-01-2014, 12:59 PM
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WELCOME to the iste. These things teach me something new everyday.
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Old 06-02-2014, 12:23 PM Sponsor

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Welcome to the site.

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