Mine has never done that. I'm almost positive that the EGR should be closed at idle and WOT. If it is opening and closing at idle some sensor must be sending it a bad signal. I'd have the codes scanned and see what's there.

 

Thanks 99, I pointed out that fact to the tech about the opening and closing seemed strange, dont know alot about diesels, just tried to give all the info I got to the tech. He talked to me for about 15 minutes asking detail questions about the latest issue. They are dring it with a monitor hooked up to it yesturday and today.

 

Ford just called. Check this out and let me know what you all think. Ford told me they think they know why I had a stumble and then a surge. I have had this since last year just to note. The guy on the hotline told the tech to see if I am near my 5k oil change. I am. Then he asked to see when I reported these issues was I near an oil change. Almost all th time I was near. Then he asked if I drive in stop and go traffic. I do. Then he asked them to pull my service history, check the reports of these issues and the milage and oil changes. They were all very close together. Then the tech on the hot line told the dealership that the injectors which are lubed by the oil dont function properly when the oil gets worn out / thick. Thus the injector doesnt open and close right causing a stumble, them the computer reacts and pushes more pressure which leads to a surge. Exactly what happened to me yesturday and before. The tech on the hot line said that they have seen that for every hour in stop and go traffic add 30 miles to the oil. That means I should have got my oil changed near 4k miles and I would have not had this issue. If people dont drive alot in stop and go traffic, then the oil doesnt break down as much and people dont see this issue as much either. They said with the heat of the air we are having here in the midwest, the amount of stop and go traffic I am in sometimes and keeping to the 5k mile oil change, it all matches. I am taken back and impressed if this is the issue. Makes some sense to me, what do you all think? This might help alot of people if this is the reason for the stumble/surge. They also said the injectors are very picky as well. This reason will NOT throw any codes or check engine light. Wow is the only word I have right now. The deisel tech and service writer were on top of this since yesturday trying very hard to help me out.

 

Sounds like you have a good team for your problem

 

I would be interested to see what they say about using synthetic oil and if they think it could help prevent the problem?

 

I'm with 99FORDGUY...ask them if synthetic oil is a better way to go.

Or maybe you might want to install an external oil cooler with an electric fan to help keep the heat down...and help the oil make it to the 5k mark.

It is nice to hear the service department going the extra mile to help you out!!! VERY NICE!

 

04 Excursion PSD, do you use CI4+ rated motor oil? I am wondering if this might be why I am not having any problems while some people have them. I do use CI4+, change it every 5000 miles (without so much stop and go). Synthetic might also be a good choice as well. Wouldn't that be something if motor oil type was the culprit in yours and other peoples woes.

 

The 6.0L motor uses oil for a number of uses...

1) The oil is used to lube the motor as we know it.

2) The oil is used to fire the injectors (as we have known and learned).

Using a quality oil with the newsest rating (CI4+) is the way to go. It was designed for reduced shearing and improved soot control for the motor and EGR valves that we all have.

Since the motor uses the oil to fire the injectors, it shears all oil used down from a 40 weight to a 30 weight. Blackstone oil analysis has confirmed this for most or all people that send in samples.

Frequent oil changes at 5,000 miles is key regradless of driving style (I choose this due to shearing down of oil). Using a quality oil filter (Racor is OEM manufacture is also key (in my book).

I am also a firm believer in fuel additives. It makes for a "cleaner burn" which hopefully reduces carbon on the EGR and adds back the lubricasy that low sulfur fuel is known for!!!

I have 54,000 problem free miles on my 2003 Excursion and I changed oil at 3,000 / 6,000 then every 5,000 there after and have used Powerservice in every tank at 150% concentration. Keep in mind I have the original C94 injectors and have zero diesel/oil dilution (due to Blackstone oil reports).

I think your dealer and tech are right on!!! Just watch them service your vehicle to ensure only the proper 15W-40 oil is used and see if it is "bulk" oil or Motorcraft in the quart bottles. Quarts in my area are all CI4+ rated (newest rating).

Good luck,

Jeff

 

I change my oil at 7500 mile intervals (Mobil 1 & OilGuard), and have never experienced a surge or hesitation. Makes for a good story if your hard pressed for an explanation.

 

Just wondering why you guys with egr problems, just don't unplug it?

 

They use motorcraft oil for the 6.0. It is the correct weight for the psd. This new diesel tech wanted to talk to me and help out as much as he can. The service I got from them this week is the best since I got the truck. They think this is the reason for my issues, they are still reserved from claiming victoy yet just in case this isnt the reason. I agree with them on that and understand that it might come back and we have to try again. Which I have no problem with that. If the oil is the root to the issues, at least that is an easy fix for Ford. Change it sooner than 5k and add a bigger oil cooler.

 

I had the same issues with my old 03 Excursion 6.0 with a build date on the motor of 03/03. We had it for a total of 3 oil changes and all were at 4500-5000 miles. Just like clock work at around 3500+ it would start surging or sputtering and rough idleing at lights. I spoke with tech on flatratetech and he confirmed that the oil was the culprit. Always had the oil changed at the dealer. I found out that these ( or at least mine ) was very picky about oil breakdown.

 

I would agree with proper oil change intervals. The one thing that doesn't sound right with Ford's statement about the oil is the fact that this engine is prone to shearing (thinning) oil. In this case, at 5k, your oil would be flowing very well. Keep your eyes open on this tentative solution. I have had great success with Rotella synthetic - no romps and runs smooth.

Mark

 

Quick question, What is code P2263? I have this coming up on my SCMP when my truck's turbo started going bad... But i cant find the code in the SCMP manual to tell me what it means?


Thanks

 

The oil shearing by the 6.0L motor has been documented by all who have Blackstone oil analysis done on their oil. The motor shears 40 weight oil down to that of a 30 weight (dino or synth). It appears to stop, but most do not let it go that long to find out (not me at least for obvious reasons).

This motor uses oil for lubing and for firing the injectors (sort of like hydrolic fluid - under preassure). THis is a use that motor oil was not really designed for... but is. As well, the design of the motor and the EGR set-up all contribute to a dirtier oil being worked to the max. Hence, it breaks down and is called on to do many things for this motor to run properly.

If you read your manual, they make a big thing about the right grade of oil and to change NO MORE than 7,500 miles. Makes you wonder what they discovered in their testing if left longer than 7,500 miles?

Many have found 5,000 or less intervals work the best. Not adding additives to your oil and using a quality dino or synth workes the best since additives throw off the "chemistry" of the stock oil used.

Thanks,

Jeff