I had my first problem with my '05 SD this last week. Last Saturday, I was pulling my jeep up one of our passes and my turbo started cutting in and out. It would be boosting at 28 psi and then drop to zero. It would then shoot back up to 28 and repeat this until i let off the gas .

Anyways, I took it into the dealership and they couldn't find the problem. The service manager suspected a sticking vane, but couldn't confirm. Anyways, they called and i B*****D at them about them not doing anything on my truck (it is still under powertrain warranty) .

So after our discussion, supposedly they found out that the EGR failed and the turbo failed. They replaced both and 2 glow plugs. Needless to say, the truck runs great and i am excited about getting it back on the pass with a trailer on it. All i can say is i am glad that i have the warranty.

I do have this questions though. The service manager said the number one cause of turbo issues is bad fuel. I am not sure how this would affect the turbo, so i wanted to run it by the forum and see what knowledge you guys might have one this. Thanks

 

This would probably get better responses in the 6.0L forum.

My guess is bad fuel will cause more exhaust gasses to be recirculated through the EGR and into the turbo. However, a bad EGR valve causes this to happen also, and the EGR valves are a known issue on the 6.0L. Dang the EPA.

 

I just had a small question for you. Did they give you any problems with the warranty with you having the Edge box on it and everything? Thanks!

 

I figured it was something like that. I try to use truck stops for my fuel anyways. I wasn't sure though.

As far as the progammer goes, the service manager asked me about it because they have to disconnect it before they hook it up to the diagnostic. I told him i had it and he never asked anything else about it. I know some of the other dealerships in the area have problems with them, but i went to the main diesel dealership in the area and they didn't seem to care about any of my mods.

 

Truck stop fuel does not always mean fuel quality. Some are noted for water and some "heat" the fuel to expand it, shorting you.

 

Supposedly, bad fuel causes the EGR and turbo vanes to get crudded up with coke deposits.

 

That's why its good to hammer down on it to keep that crap burned off.

 

EXACTLY!

<---Deposit

 

They don't do this INTENTIONALLY.

There are many truckstops that are only a stone's throw from the refinery, and there's not enough time for the fuel to cool (refining requires heating) before it's put in the tanks, and then dispensed.

The truckstop that (unwittingly) started all this "heated fuel" nonsense is the Flying J in West Memphis, AR. They are located at one of the nation's largest "choke points" for truck traffic. There are a half-dozen truckstops within a mile of each other. They buy their fuel from the Williams Refinery in Memphis, TN. The distance from the wholesale racks to the truckstop complex is only about 3 miles. That particular Flying J turns enough fuel volume to keep a fleet of four 9600-gal tank trucks running continuously, 24/7/365. At this volume, the fuel doesn't stay in the underground tanks to meet the 60-year old API specification for fuel temperature.

What they intentionally do is refuse to use temperature-compensating pumps.

The reason *I* say it's nonsense is that ALL modern, common-rail diesel engines heat their onboard fuel supply to 180-195 degrees as a consequence of having fuel running through the head and returning to the tank. They also use injector "pop" pressures on the order of 20,000 PSI.

The driver who originally noticed this fuel temperature "problem" runs an "ancient" Cummins mechanically injected motor, and mechanically injected motors don't heat the fuel, at least to the degree that modern motors do. Also, mechanically injected motors only use injection pressures on the order of 250 PSI or so. (Note for the record that Cummins hasn't sold a mechanically injected Class-8 motor in nearly 20 years.)

Lastly, this is a "problem" only in certain specific locations; those that are within a handful of miles to the refinery AND have a high turnover rate on on-location fuel stocks.

-blaine

 

1995 ain't been quite 20 years ago,that was the last new class8 truck I bought,Cummins mechanicall injected

 

Depend where you are from...

 

don't matter where you are from the truck came from factory in ky then body mfg in al then to fla
been dealing with and repairing class 8 trucks for more years than I care to remember

 

Which one was that?

-blaine

 

To my knowledge the biggest killers of EGR's and turbos are lack of use, which will cause your turbo to rust and stick, as well as idling and repeated short trips of say under 5 miles. This causes our EGR system and turbo to get plugged up with carbon (wet stacking). As said above go over tho the 6.0PSD forum. There is alot of good folks over there and a weath of information.