I got a hold of the dealer before they closed and told them I would be waiting for them when the pulled in tomorrow morning. As far as I was told and as long as it took in the shop no one touched the turbo. Definitely resets when I restart the engine. Nothing out of the ordinary occurs to me before limp mode occurs, just getting on the highway and accelerating hard to 30 psi and then shutdown to limp mode. I can run in the city fine no problems, acceleration from take off has improved though.

 

On your 06, find the drivers side exhaust manifold from the top of the truck. Towards cylinder 2 (the front cylinder) you'll see a stainless tube threaded into the manifold. This is the EBP tube. Attached to the other end is the EBP sensor (exhaust back pressure). I would remove the sensor and that tube, and clean both of them very well. Some pipe cleaners may be needed for that tube. This will make your turbo do some really funny things. I would also inspect the wire harness that connects to that sensor. I had this happen to mine, two of three wires were exposed. My turbo would fall to 0psi driving down the road and I could only get it to light again if I stomped on it and it downshifted. It was also farting under acceleration like you said. It's quick and cheap to remove that and clean it, so it wont hurt to do even if it fixes your issue.

Any competent tech should be able to hook a scanner up and check this stuff as well. My sensor when it was messing up was alternating between it's max setting and min setting non stop. It never threw a check engine light either.

 

ok now that makes sense Mdub, could it be like an overboost/underboost shutdown?

 

Tough to say for sure without any scanner data or codes, but it's a relatively quick and easy thing to check and don't cost much.

But yeah, that's basically what happens. Those sensors get gummed up from soot, and then when your EGT's run high that soot turns to goop and clogs the sensor up. When the sensor can't see what's going on it thinks backpressure is going up so it might cut fuel and limp the truck. Worth looking in to anyways.

 

Okay, dropped off to dealer they tore into turbo and found out turbo has had taken a shot from some debris and is shot. New turbo coming monday. Mdub will check out that sensor when truck gets back from shop thanks for the help guys

 

see another idea that i was toying with (but didnt think it would be a good one) was the turbo having a mechanical malfunction and something was picking up on it, sending it to limp mode. but good, glad you took it back

and no problem, let us know how you make out

 

How did debris get to the turbo anyways?

 

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??

 

trying to upload pictures but can not figure out why will not work? if you want pictures of turbo can send directly to email
Mdub do not know how debris got into turbo but it must have been before I bought it. Installed new S&B air filter myself.