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Thread: P0284 Code 2006 F350 6.0 Diesel 100K miles Reply to Thread
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  Topic Review (Newest First)
09-07-2019 09:19 AM
ed2hess At this point I got almost 60psi.....I saw very little amount of that black delam at filter. Going to open up the water drain on pump next.
09-06-2019 03:34 PM
bismic The chassis cab had a steel tank. the regular F-series all had plastic tanks and the coating would delaminate - especially if filled w/ bad fuel (water). These had "after the axle" fuel tanks. The filters should catch it, but you will most likely have low fuel pressure and/or restricted flow w/ it. Biodiesel was especially bad for the coating.

09-06-2019 02:58 PM
ed2hess Tank is steel. I seen a few short strings of black material and I think that is delam. This gritty stuff is like grit on rough sand paper. It is mainly above average diesel fuel level. None on bottom part of tank. I got all loose stuff vac up. I am going with as-is short term....filter should get that kind of debris. I will keep checking the filters. I never seen any plastic fuel tanks?
09-06-2019 12:27 PM
Originally Posted by RKadair View Post
ficm sells on amazon too
I am saying that he doesn't need to buy one ...............

Get the existing one fixed. Basic repair is $350.

If the FICM is good - they won't charge you for an unnecessary repair - unless you want an upgrade for better future reliability for $100 more.
09-06-2019 12:08 PM
ChrisSki I find a little bit of grit on my fuel filters when I changed them, which is normal. With 10000 miles and 1000 gallons of diesel going through it, I think that would be fine. Has happened before and after I swapped my tank. When I swapped my tank, I found a black carbon substance caked up in the HFCM before the filter. The shop that changed my tank said it was regular to see that carbon build up and they thought it was from between the big tankers getting offloaded and the final delivery to the pumps a little of the carbon gets left in the diesel and the filter does its job to take out the few pieces of carbon left in the thousands of gallons that has went through the HFCM. So, without seeing the grit, I may think its normal. At first I thought the tank was delaminating and that is why I had it swapped, but I actually had the plastic tank which does not delaminate.

For things like saving money by swapping a board, that's not always a good idea with a shop doing that because usually the labor is many times the price of the parts, kind of like saving a hundred dollars on an oil cooler off a 10 hour shop job. Too much of a risk in saving a few dollars in the short run and biting you in the long run. I do think that as mentioned pulling it yourself and sending it to may be good, if the FICM truly is bad. As far as measuring the FICM, you can do it without a monitor, but only with KOEO, and starting, but you can't do that driving down the road. It may have volts KOEO, starting, but drop while driving. Really need a monitor, but even with that, it can get you in the ballpark, but not to exactly where you want to go.
09-06-2019 11:24 AM
RKadair ficm sells on amazon too
09-06-2019 11:15 AM
Originally Posted by ed2hess View Post
I pumped out the fuel tank. There is a gritty substance on the wall that won't hardly come off with a brush. Seen some of this in the lower filter housing when cleaned it out. Is new tank my only option?
Is you tank a steel tank or plastic? The steel tanks delaminate and need to be replaced. The plastic ones should not have this kind of an issue unless you really got some bad fuel.

You need 45 psig even at WOT. Is yours an electronic gauge that you can monitor at WOT?
09-06-2019 11:14 AM
Originally Posted by ed2hess View Post
The FICM have to be programmed for vehicle so I can't swap one from our other 6.0 truck right? Considering the amount of money to date a new FICM from amazon for $499 not a big deal. I am a little concerned about unhooking the FICM connectors. Seems tricky .....finding good diesel shop hard this is second one on this problem..2 months. Might bite bullet and go Ford dealer.
I wouldn't even think about a FICM from Amazon. You can get your existing FICM upgraded at FICM and have a very reliable unit. The cost is about the same - maybe even less.

A FICM does not have to be programmed for a specific engine.

Just remember, you have a contribution code and not an electrical code.
09-05-2019 09:44 AM
ed2hess I pumped out the fuel tank. There is a gritty substance on the wall that won't hardly come off with a brush. Seen some of this in the lower filter housing when cleaned it out. Is new tank my only option?
09-04-2019 10:27 AM
ed2hess Could I expect a good diesel shop to install circuit board into FICM to hold down cost. Not necessarily one from amazon. BTW.......a month ago a diesel shop didn't tighten the nut on back of alternator and batteries drained down completely. Goggle says that can damage FICM?
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