Bought a dreaded 6.0L - Ford Powerstroke Diesel Forum
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Old 03-01-2012, 06:50 AM
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Bought a dreaded 6.0L

Bought an 07 Lariat Crew Fx4 last Friday with 167,000. Owner said the truck had the EGR cooler replaced recently (didn't say anything about the oil cooler) and had ARP studs put in at some point, new fuel filters and an oil change. He used it to haul a race boat. After looking it over real good and getting a good deal on it I bought it. Didn't know a thing about diesels at that time. Started researching this fourm and a couple others and was really dreading my purchase by Sunday and noticed I had green coolent installed. Started ordering parts on Monday, ordered a PMM water filter kit, scangauge, test port fuel pressure adaptor line, restore/restore+ and blue spring kit. Got my scanguage in yesterday and checked my deltas, they were running about 12* differance but my EOT never got above 182. Checked my FICM and it never dropped below 46.5. So I was feeling pretty good. This morning I checked FICM on a cold start and it dropped from 48v to 40v at startup, once I started down the road it jumped to 48v and stayed there, but looks like Ed's going to get a call next week. Also this morning EOT never got over 180 and I have a 25 mile trip to work. So I stopped by the Ford dealer and picked up a new thermostat/houseing/o-ring. I'm hoping that changing my thermostat will bring my EOT up and bring my deltas closer together, then I'll feel more comfortable running the filter for a while before flushing. Sorry this was so long and not really sure what the point of this post is after writing all this but...great forum guys...also ordered a new billet grill and grill emblem. Figured if it breaks down at least it'll look good sitting there.
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Old 03-01-2012, 06:59 AM
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How was the ECT during the drive? What were the readings ECT vs. EOT in the morning? Pretty close?

And you are right about FICM. Once warmed up, it will probably stay there, but needs worked on.
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Old 03-01-2012, 07:01 AM
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You make it sound like a bad thing...lol these are great trucks when you take care of them.

Fist off, put your coolant filter on and let it run for about 7,000 miles before you do the flush. Put in a new TStat after the flush. Your FICM is bad and needs to be repaired. How did you test you delta's that EOT is too low. Changing the TStat to the 195*.
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Old 03-01-2012, 07:33 AM
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(Feel more comfortable after finding out what really needs to be done)
This morning the ECT ran about 180-181 and EOT ran about 189-190. The temps were checked with the Scangauge II. Had to program an Xguage for the EOT.
So wait on the thermostat change then?
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Old 03-01-2012, 07:42 AM
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If that is over the drive you do, 25 miles, you need a new T-stat.

I drive about 25 miles to work, and my temps will be 188* - 190*, more 190*. When I lift my foot, it drops to 188*.

My EOT will run about 195*
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Old 03-01-2012, 08:39 AM
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Ok thanks, I'll go ahead and stick the new thermostat in this afternoon then.
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Old 03-01-2012, 08:52 AM
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The deltas need to be checked fully warmed up and at speed I believe. There is a TSB that tells how to do it. I know mine are off a little when around town at low speeds, but match up well on the highway.
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Old 03-01-2012, 08:56 AM
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Yes, 18 miles of my commute are highway driving so it was fully warm (at least as warm as it was going to get) temp was cool but it's supposed to be 80 this afternoon and I will check it on the way home.
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Old 03-01-2012, 09:13 AM
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sounds like you got a good hold of what needs to be done. one more thing check your oil filter cap some people like to run aftermarket filters and that should not be done only motorcraft filters or racor(company that makes motorcraft filters)
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Old 03-01-2012, 10:06 AM
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Ur ficm is bad, but it sounds like u already know this
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