Are you tuned?

 

Just running a tranny tune to eliminate the EGR code from the EGR delete.

 

Sounds like your turbo might be sticking (the VGT vanes).

 

I'm not disagreeing, but are there any particular sensor readings to verify that? If I understand correctly, the 85% and 15% are just what the pcm is commanding the vgt solenoid to do. I am just not understanding what I should be seeing as normal or abnormal.
A local mechanic told me he "cleaned" the turbo, but I am not sure exactly what he did. I am beginning to doubt he actually took it apart. I will try to find out tomorrow. His last statement was that the issue must be electrical, but after seeing the truck sit for 2 weeks not being moved, I have lost faith in his knowledge. He does not have IDS. The local ford dealer is the only one I know of here that does, and they have no true diesel specialists. I've asked. Still just trying to sort out this P0299 code that seems to have no other symptoms.
EBP and MAP replaced. EBP tube clean. MAP line clean and replaced-it was cracked. CAC hot side boots cracked-replaced. Cold side good. MAF cleaned. Batteries and alternator good.

 

Check your EBP, MAP, and BARO sensors KOEO - they should all be within .5psi of each other. You should not see 15% or 85% on VGT while driving normally - maybe 85% at idle during cold start after a minute or two to help engine warm up faster. What kind of boost #'s are you seeing?

-jokester

 

Yes, they are all within about .3 psi of each other. Truck seems to have plenty of power. Idle boost is zero when cold. Cruising boost runs about 6 to 10 psi no load up to about 28 psi WOT. Until the VGT % gets off of 85%, the EBP stays at about 14.5 psi which is close to the MAP reading. Once it goes below 85%, then the EBP starts changing.

Bismic, I have watched the video. I guess I need to watch again. I have read and looked at so much in the last few months I have forgotten a lot of what was seen.

ChrisSki, I will check that again. He did an EGR delete at the same time, so there will be time charged to that also. If I remember correctly he had a total of about 5 hours charged. The other stuff I listed was what I have done to it.

One reason I have lost confidence in this mechanic is that I read off some of the possibilities to him, like the MAP sensor line, and he said that was the first he had heard of that. Same with the intercooler boots.

I guess what is confusing to me is that pretty well the only time the code is thrown is either at idle or right after I start moving and have not even hit the throttle. Expected EBP when I use the SCT to monitor is around 17 psi, but actual is usually around 14.5 at idle. The Scan Gauge doesn't give expected EBP and that monitor is what is usually hooked up.
Could it be that the vanes are sticking open at whatever percent they are on when I stop the engine and never fully closing at startup? Is it possible they could stick only at low RPM and work fine at higher RPM?
Sorry for all the questions. I am trying to learn about this truck, like it, and want to keep it.

 

Have you watched this:

 

The invoice may tell you if he did it. If the turbo was cleaned I would expect 3 shop hours if this was the only thing done, or if the turbo was out because of other things, than 1 shop hour.

With the work you listed except cleaning the turbo, I don't see a reason the turbo would come off. Sounds like it would be on the pedestal with most of the steps done except being removed. IMO except the turbo cleaning seems a fairly easy thing.

If the turbo was cleaned the unison ring inside can be worn, you can ask him about that, but not sure if that would be a P0299 code. Also, the turbo might not be indexed correctly, that does low power, but I don't know about P0299. Their is also the VGT solenoid.

 

Just a quick followup. The mechanic I was using does not have IDS and after a total off and on of the truck being in the shop for about 4 weeks, he said my problem is definitely in the wiring. I told him he was not tearing my wiring up when he didn't have the proper test equipment to begin with. Since then I found I needed cab bushings, so I went to another mechanic whose work was highly recommended. I asked at that time if he also had IDS and he stated that no one should work on a 6.0 without it. He checked the truck and said the turbo was definitely sticking and needed cleaned. I told him it supposedly had been cleaned, but to take it out and check anyway. Sure enough it had been cleaned-----of carbon. The unison ring was nearly rusted to a standstill. All is running fine now. Total of about 6 hours for both the turbo and the cab bushings. Guess which mechanic I will NOT be using any more. I will also be making a trip to the first one to see if he is honorable enough to refund some of my money anyway. Not holding out much hope there.

 

unk:

:smile2:

 

Thanks for all your advice bismic. It may have seemed I wasn't paying attention, but time and money was playing a big factor in my troubleshooting.