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post #1 of 5 Old 05-30-2014, 01:07 PM Thread Starter
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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.

Glendale, AZ
'05 F250 XL Extended Cab - 2 Wheel Drive, No Options Except: Integrated Brake Controller, 3.73 w/ Limited Slip, Upfittter Switches & AC
Added: Edge Monitor with EGT, Fuel Pressure, coolant pressure, low oil pressure system sensor & Ambient Temperature Sensors, turbo timer & back up camera. High Idle Mod. Manual Fan Mod, Power fold/power extend mirrors.
Installed: Cruise Control w/ Leather Steering Wheel, 17 Alloy Rims off XLT, 40 20 40 Vinyl Front Seats
Well maintained with Motorcraft parts, over 222k miles and still have original head bolts.
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post #2 of 5 Old 05-31-2014, 08:02 AM

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You should always have the batteries and alternator tested off of the truck.

2004 F250 CC Lariat 4x4

BPD FICM, BPD billet water pump, BPD VK688 oil cooler kit, S&B CAI, MTW stage 2, TSD tunes, Auto Meter gauges, Edge CTS, Sinister coolant filter, Blue spring, 6.4 banjo bolts, Straight piped w/ 6" single mitre stack, Pro Comp leveling kit, 05-07 HD headlights, Fumoto block drain valves, ELC, High idle mod

Originally Posted by djmaguire View Post
I'm guessing that you didn't lose nearly as much as it appeared. Spills are like that. The last beer that I spilled was like a million ounces.
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post #3 of 5 Old 06-01-2014, 12:36 PM
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Glad to have you - to the ORG!!

If you haven't already, check out:
Ford 03-07 6.0L Powerstroke Forums - Ford Powerstroke Diesel Forum

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post #4 of 5 Old 06-01-2014, 12:59 PM
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WELCOME to the iste. These things teach me something new everyday.

BPD OIL COOLER W/COLD WEATHER PACK & BPD oil bypass amsiol filter
,edge turbo timer
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post #5 of 5 Old 06-02-2014, 12:23 PM Sponsor
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Welcome to the site.

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