I posted this message to an RV forum that I belong to, and one of the members there suggested I post here. I'm not necessarily looking for an answer. I just would like to know if there are any things I should be looking out for when I get my truck back from the dealer.<o>

</o><o></o>I had the oil changed in my 2005 F-350 PSD by my dealer, and less than 50 miles later we took it on our annual holiday visit to the families. About 100 miles into the trip, the "service engine soon" light came on. Being the 26th of December, we found that most Ford service personnel were off for the week. We were told that it was probably just bad fuel, and if the motor wasn't missing, we were probably fine to finish our trip (another 250 miles).<o>

</o><o></o>In another 20 miles, the terrain got hilly and I noticed that the boost gauge for the turbo wasn't registering any pressure and that I'd lost a lot of power. I pulled into a TA truck stop and had one of their mechanics take a look at it. He pulled out the fuel filter and said the fuel was full of oil and that I'd probably blown an injector. I needed to take it to the dealer ASP. The mechanic also pulled the dipstick to see if the oil had been tainted at all. He said it had a very odd feel to it and that something was clearly wrong with the oil. Well, I left the truck with the local Ford dealer and rented a minivan for the rest of the trip. <o>

</o><o></o>The service technician at the dealer called a few days later and said that the only thing that was wrong with the truck was a bad turbo boost sensor, and that when the turbo boost sensor went bad, the truck shut the turbo down. Okay, that makes sense. But why would the TA mechanic have been so wrong? Does the new ultra low sulfur fuel look so much different than long-haul truck diesel fuel that he would have thought there was oil in it? (I usually fill the truck with Shell ULSD.) Also, I called my Ford dealer where I get the truck serviced and asked about the oil. They said they have been using a different oil blend for the new 2007 motors and that they've been using the same blend in the older motors. Is this going to be a problem?<o>

</o><o></o>Anyway, thanks for reading this far. I would just like to know if there are any issues I need to be looking out for when I get the truck back.<o></o>


-Dave

<Edited to remove odd control characters that appeared when first submitted -- Dave>

 

Truckstop "mechanics" are generally great for oil changes, but not much more, especially on weekends or holidays.

The truckstops refuse to pay enough to grab quality people. Think "Jiffy Lube."

-blaine

 

The fact that the engine was performing like it was I would say that your dealer is correct on the turbo issue. Have you ever been under the truck and drained the water from the fuel filter that is right below the drivers door. You could have gotten some bad fuel and I would check that and the fuel filter that is there also. Is the truck completely stock or have modifications been done to it. Usually if an injector is gone the truck will miss terribly.

 

i will not say it is impossible, but it is VERY unlikely that there will ever be oil in the fuel sytem on a 60. the fuel and oil systems are no where near connected nor close to each other like the 73s were. when is the last time you replaced filters? how long have you been running ulsd? the ulsd is a very good cleaner and will remove gunk that is normally in lines and tanks and will go to the filters.

 

Yes, the truck is completely stock. I agree that if an injector went, the truck would run poorly.

Thanks. I was assuming that the 6.0 had the separate oil system for the injectors like the 7.3.

I've been running ULSD for quite some time now - probably since last spring. There is one dealer near us that still has the older low sulphur, and I did accidently fill the tank recently with that before I realized it was the older fuel. I wondered if that could have added to the problem. I've heard the discussions on using the ULSD in a pre-2007 engine. Is there a problem if you switch back and forth?

Thanks for your input!

-Dave

 

Oh, and the last time I replaced the filers was about 8K miles ago.

-Dave

 

I also agree with the dealer and the T/A mechanic had no clue.

 

I didn't think that the computer could completely shut the turbo down to the point where it wouldn't produce any boost at all, I didn't think the vains had that much control?

 

Actualy I do not know of a sensor called a turbo boost sensor. They turbo boost is inferred by other sensors on the engine. But If there was no boost it could have been any number of the sensors or the egr itself. I do know that the stock boost gauge on the 05 F-350 is pretty accurate.

 

map sensors will keep the turbo from operating by telling the pcm wrong atmospereic pressure. this will keep the veins open all the way, and in turn wont produce boost or much boost off idle/stop and go traffic by not being able to spool up properly.

the 60, you can run lsd or ulsd in the engine. the 07 duramax and cummins and 08 superduty require the ulsd.