I know there is few Wont Start Hot threads. But I cant seem to find a for sure fix. My truck runs fine cold and hot. Starts cold in about 4 to 5 seconds. FICM is good in all and has new batteries. Problem I am no having or I think its been starting up for a few months now. Sometimes it would crank a little longer when it was just getting warmed up ( upto 10 seconds) and now it wont start at all when its at running temp. I know theres the STC fitting to look at and I think the ICP right?
I dont have the funds to take it in to Ford right now. So how much work would it be to replace the STC fitting? And is the ICP sensor on the right side near the valve cover on the 07? Was looking at a few sites and everyone seems to flip flop from behind the turbo the the right side valve cover.
I have no codes for anything either. Took in into AAMCO and they checked for codes with a Snap On scanner.
Ill dig around more to try to find more answers. Just hoping some of ya can point me in the right direction abit faster. I have my wedding coming up the 22cd this month and need to drive about 800 miles pulling a 8k lb 5th wheel. Dont want it to leave me stranded and miss my own wedding. HAHA. Dont think the wife to be would be to happy.

 

STC fitting is an issue on 05+ trucks only. It is VERY common for it to fail somewhere before 100k. More like a "when" not an "if" situation. It's like $50 in parts, and not terribly hard to do, you will need to pull the turbo and possibly the intake manifold, but you might be able to leave the manifold on. P/N is: 4C3Z-9B246-F Just looked it up, it's actually $38 from Tousley. Local dealer will probably have it in stock believe it or not though.

I would also go ahead and do the dummy plugs and stand pipes myself, it's another common point, and the parts have been updated by Ford. P/N: 6E7Z-9A332-B $102 at Tousley. Need to pull valve covers for this, so that's up to you. The only true way to pinpoint the leak is to air test the high pressure oil system though. There are adpaters you can buy that thread in where the ICP sensor is, and pressurize the system. You will also need an IPR pig tail and hook it up to a 12V source to force the IPR closed to do this. Easier to do than it sounds even.

The ICP sensor is in the valve cover on 04.5+ trucks, and behind the turbo for the unlucky bastuds on 03/04 trucks. Yours is right in the valve cover on the passenger side, very easy to find.

If someone with a good scanner can hook up to it, you can watch ICP desired (what the PCM wants) vs ICP actual (what the high pressure oil pump is actually putting out) and see the difference. If it's not starting, the IPR duty cycle will slowly climb up as it's trying to build enough pressure to start.

They do this when warm, because as the engine heats up the oil thins out and bleeds out of the leak easier. When cold it's nice and thick and can build pressure easily.

Make sense?

I have a Ford write up somewhere on doing the stand pipes and dummy plugs I'm pretty sure, let me see if I can find it.

 

Been trying to get a quote from Ron Dupratt Ford in Dixon,Ca to fix it. But 3 days have gone by so far and nothing. They had recently done my oil and egr coolers, 2 glow plugs and reconditioned my turbo. So I was trying to ask them since they had all that off and the HPOP was right there why didnt they update the STC fitting? Just read that it was a TSB that if a tech was in there they were supposed to replace it.
So we will see where this goes for right now. Cant take it in to fix as I have no funds for it. All has gone to wedding. ANd right now I cant even work on the truck at the apartment complex I live in. They will call the cops and have it towed. SUCKS. Hoping it will last till after the wedding when Ill be up north in my old home town and put it in my grandfathers shop and work on it myself.
But once I do get into it Ill replace/update everything. STC fitting. Stand pipes. dummy plugs, upgraded fuel spring and my just delete my egr cooler since I have it registered ina rural area where there are no BI annual smogs.. What else am I missing?
Also what is that sensor that comes off the exhaust with the small tube thats about 10 inches long? Supposed to clean that out right? Or am I thinking of something different?

Im going to take the truck to pick up my daughter from school. Wont shut it off till I get home and then Ill try to restart. If it dont restart is it the ICP sensor that I unplug? And if it starts with it unplugged does that point to a LPOP issue?

 

Yeah that's the EPB sensor, good idea to clean it and the tube.

They probably wont do a TSB if it's out of warranty... at least not without you asking and paying for it.

Unplugging the ICP sensor basically just defaults the PCM to 2000psi. This is desired though, not actual. If there's a leak, the actual will still be too low to start. The truck needs 525psi of ICP to fire. Thus why you crank and it doesn't start. You can certainly try unplugging the ICP, but I highly doubt it will work. Easy enough to try, just didn't want to get your hopes up. It's a 90% chance it's the STC fitting.

 

Yeah thinking myself its the STC fitting. Truck was under warranty when they did all the work ( oil and egr coolers) Its now been out of warranty since Dec 2011. thanks for your reply
Mike.

 

Mine was in for warranty work all the time and even sat at the dealer for 2 months and ran out of warranty, they never did my STC fitting either. Not sure what the criteria for it was. I have one sitting on my bench waiting though. At least they're a cheap fix!

 

Bought the wife a new ring and she has finally gave me approval to get truck done. Going in tomorrow bright and early. Its going to have the STC fitting and standpipes done, Arp studs with the heads decked and fire ringed. Updated blue fuel spring, turbo cleaned, intake hot dipped and cleaned and whatever else needs cleaned or replaced while they are in there. Also placed order with Eric at IDP for my SCT Livewire with the extreme upgrade. Cant wait to get me truck back.
As for cost I went to Left Coast Diesel and they would not deck the heads. Said it wasnt recommended nor would the fire ring them. They gave me a quote at $6500 for all parts and labor.
I checked out Devil Mountain Diesel and they included the heads decked and fire ringed for $7200 total. I talked to Marc there to get a feel of how they were and what quality of jobs they do. Found he and his partner are both factory trained Ford techs who started their own business. His partner was one of the first mechanics to work on the 6.0s at Ford. Checked out a truck that as currently having the same thing done and it looked good.
So if anyone fro Norcal or Bay Area is looking for good mechanics go check out Devil Mountain Diesel in Walnut Creek, Ca.