You apparently haven't read my thread about swearing on the forums? Do you like turtles?

Anyways to help you out here. I try to take a step back and simplify things. These trucks really aren't that complicated, you just need to be able to look at it as a whole. Simple systems. Diagnose, test, repair.

P2284 is ICP circuit range/performance (a difference was detected between commanded and actual pressure) This already tells us a WHOLE lot!

P2288 Injection Control pressure to high

I'm guessing you don't have access to a scanner correct? Do you have an SCT by any chance? Or any buddies with access to a scanner? We really need some readings to make a good diagnosis here.

If you don't have a scanner, try this. Unplug your ICP sensor and try starting the truck again. It wont drive down the road like this, but it will start and idle. By unplugging it, the PCM reverts to some predetermined standard settings and will let it start and idle. See if it changes your starting at all.

We really need this thing hooked to a scanner. We need to see ICP desired vs ICP actual, and IPR duty cycle.

Your dealer sounds like they have no clue what they're doing and throwing parts at it based on what the computer is reading. Whoever is doing diagnostics is basically throwing darts in the dark here.

I understand and appreciate your frustrations with the dealer, but please keep swearing to a dull roar. This is a "family" forum. Thanks, and welcome to DB~! The dealers assesment of fuel pump was crap. They were throwing parts at a truck with your money basically.

 

Sorry about the swearing I won't do it again I don't have a scanner but I can use one anytime so I will go there tonight and get u some readings of it

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I just talked toy mechanic he has a question about fuel pressure? KOER the fuel pressure is 60 when u shut the key off it instantly goes to zero! Wondering if the 6.0 is suppose to do this and if not where might the fuel pressure be going

 

No worries man, I know it's frustrating working on these.

Please report back with those three readings if you can. Also try seeing if you can find other trouble codes with the scanner, they will often see more than a handheld code reading unit. We can help you get this fixed, it just may take a little time going back and forth.

As for your fuel pressure, how is he testing this? 60 is good. It will bleed off when you turn the key off for sure. That doesn't really matter. Check fuel pressure with it running down the road though, testing it at idle doesn't tell too much, but I highly doubt that is the issue. Excess black smoke means too much fuel, not a lack of.

 

ok ipr duty is 15% and icp actual is 1.24 he hasnt checked the desired yet because he is busy
as for testing fuel pressure he made a fiting of the port where the regulator is and put a pressure gauge out of the back of the hood closed the hood and drove it down the road with the codes cleared check engine light off

 

Is that an ICP actual voltage? We need an actual ICP PSI reading... it also needs to be tested while driving, not while idling in the driveway. ICP actual and desired should be very close together, it needs like a minimum of 525 to even fire, typically will run somewhere like 550-600 at idle, and should go up around 4000psi under WOT. IPR duty sounds really good. We need to know ICP desired PSI vs actual PSI.

If he had 60psi driving down the road, that's right where it should be, so that is fine.

 

Ok so my mechanic has made a 2 minute video and put it on you tube the truck is hooked up to his scan tool ao if you could go watch it it may help you! The video is called 2007 King Ranch scan data it's about 2 minutes long

 

Here's the vid. I commented on it... we still need to see ICP actual vs. ICP desired... this video doesn't help anything without it. IPR duty cycle looks in check, as does desired ICP, but we need actual to know what is really happening.

 

The top line is actual injection contol pressure, the second line is desired pressure, the third line is duty cycle %. This would be going top to bottom. The actual pressure is highlighted blue at the very top of the page of data.

 

LOL wow, I never even noticed it! I saw the blue and just thought it was the top of the screen, didn't realize it was part of it! Let me watch it again...


I'd really like to see what ICP's look like when he's actually out driving the truck around... he never got over 1500psi... I hope that wasn't WOT. It should be getting up near or even over 4000 psi when romping on it.

We'll get this thing figured out...

 

Yea all this data was idling. we will run it tonight on the road and do another video and post it. We will get it on the highway so you can see what happens at WOT and under a load.