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Old 08-29-2013, 08:28 PM Rookie

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How to make sure EGR Delete was done

Hi Guys
I brought my F350 6.0 L to the garage last week because I had a problem when I was pooling my trailer up the mountains with my turbo that was triggering a P0234 code (Turbo over boost). Based on what I read I understand that it's most of the time a software problem that needs to be upgraded. Also I had a Glow plug on cylinder 8 faulty.
So basically I want just to update the software and maybe fix the glow plug.
They told me that the P0234 could be because a turbo clogged and it needs to be clean and change the unison ring and the vanes replaced. Also he said that the 6.0L need to have an EGR delete done if not I'm better to sell it. Since they are there they said that they also have to change the oil cooler filter. So the $149 software upgrade end up in a $3000 bill.
Well I said go ahead if that will save me money later on.
After they did the job I realized the truck was not shifting the same way as it use to. It was shifting at different RPM's and it has that not OK feeling.
I just received today the SCT scanner and I load the Performance tune from Innovation Diesel and the truck has more power but the shifting now is more visible than before I load the tune. I also read the ODB codes and I still get the glow plug code on cylinder 8.
So now I know they did not change the plug or if they did they did not test the codes after to make sure the problem was solved.
Now I start to wonder if they actually did the EGR delete.
I look at the EGR valve and it still there. When they do a full EGR delete don't they suppose to take it out and cover it with something?
I don't know where to look for the EGR cooler. They said they removed it but I wish I can see it to make sure.
Any suggestion?
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Old 08-29-2013, 09:15 PM
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There's 2 easy ways to check.
#1 along the passenger side valve cover in the valley there will be a long tube-like egr cooler. You can Google what it looks like. If it's not there, there will be a U-shaped hose or pipe that connects the coolant system back together.

#2 if the egr cooler is there, pull the egr valve, clean it, put it back in, run it for a couple days. If the valve is coked up, it's all still there and active. Some "delete" systems use the oem cooler but they weld the ends shut to prevent exhaust flow.

There are several systems that rely on egr valve function to work properly: boost regulation and fan clutch are 2 of the bigies. There are no sensors that can measure egr flow, just the position of the valve itself.

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