[diesel]

Thanks, I'll pass that along to them

I don't remember off the top of my head, but can you remind me what the very first thing that triggered all this was? I think I can give some better input once I remember what triggered everything. In the meantime, others have given some good input.

 

[diesel]

Not seeing any oil loss. Never saw where engine was even getting hot at all. I was keeping my eye on gauges when all this started happening. I did change oil though immediately after they did the 3rd manual Re-gen as I figured the oil was being cooked as well. Hope to hear back from them today to see what all they have found out. Having fuel system cleaned, and will remind them to also check all the turbo clamps, but they probably have to remove turbo to get intercooler off. May replace clamps with the Constant Torque Clamps to prevent them from loosening up in future if that is happening.

Keep us posted. Hopefully it gets properly sorted.

 

[diesel]

View attachment 204665 WARNING: If you get symptoms I had with smoking, reduced power, sputtering, DPF full warning:
This seems to be the culprit to all the problems with DPF and Engine reduced power warning lights. Intercooler for turbo is made of plastic. It broke and also took out the Throttle body. Dealer says there is a TSB from GM on this as a known problem and they are making a modification to the part. Not sure how long it will be to get the replacement part from GM, still waiting. Not a help to me since I am way out of warranty based on mileage.

Wow! Thanks for posting about that. In 3 years on this forum, I've never seen that come up before as an issue, but obviously it is! I wonder what caused it to crack? I drive my car very hard all the time, WOT every day and in 183K miles never had an issue like this. Do you know the part number?

 

[diesel]

Yeah, crossed my mind!! Have tubes of it in garage.....

When I advised dealer, they refused to address it stating that it's normal for things to get loose.

That reminds me, I need to check mine again. I've had to tighten them a couple times, but nothing major.

 

[diesel]

Hopefully, when the part comes in some day :{ I will have the part number for the new re-engineered part. Until it comes in, don't know if that along with throttle body will remedy all the problems.

Hopefully it does. Keep us posted. Did your dealership reach out to GM TAC on this? That can speed up parts delivery.

 

[diesel]

Okay, picked up car today and is running good. The Turbo tube (intercooler) that goes from turbo to throttle body was replaced along with the throttle body. When tube broke it took out the throttle body too. Looks like the 'tube' is designed a little different but is still some type of phenolic or plastic. p/n for tube is 95472182. Mechanic said I have a build up of soot that he could see in the intake manifold that I will need to deal with soon. It had built up in the throttle body as well. May be in couple weeks will have to remove the intake manifold and have it deep vated to clean it all out. If any one knows of an easier way to get the manifolds cleaned out I would appreciate hearing from you.

This kind of stuff plagues VWs and BMWs. There's all sorts of videos and articles about it. It was one of the main things I wondered about when I first bought my CTD - how many miles will I be able to go before I need to clean out the intake? You are the first one to post on this forum about this particular issue. I have yet to find out on my car, and I am close to 185K miles.

 

[diesel]

This happened to me today at 186K miles. No CEL, but heard a sudden pop, smelled diesel fumes really strong and car ran really rough. I was able to limp it to a parking lot.Because of this thread, I immediately knew what the problem was.

 

[diesel]

@gregbonat Do you have any more info on how it took out the throttle body and how it was determined it needed replaced? Mine is sitting at the dealer, but they won't be able to get to it until tomorrow.

 

[diesel]

That looks like a nice failure...wonder if that part number is changed since the vehicle was released. Plastic is cracking?

I am not sure how to tell if it's a new part number. The OP hints that it may be.

 

[diesel]

Was the clamp too tight?

Not sure. It's not one of the clamps that I ever tightened on the other side of the engine.

 

[diesel]

@diesel this looks like something that we need to write a specific thread about and place it as a sticky.

I just put together a common issues list and posted it.

 

[diesel]

Silly newbie question - but can a diesel backfire?

I was wondering this myself.

 

[diesel]

The plastic on mine cracked in almost the exact same way as the OP's did, so it seems a common failure area. I talked to the dealer yesterday and they said parts are ordered and they expect them soon.

I am a bit confused though. When this happened, I had smoke and strong diesel fumes, but doesn't an intercooler cool the clean intake air?

 

[diesel]

So, just the pipe and all is well. i am not sure why they listed that gasket - it's the wrong gasket as far as i can tell, but I am not 100% sure. I am also not sure why the OP needed all the extra stuff. Probably driving it for 20 miles like that caused damage. My soot grams were exactly where they were when the issue happened, and no other components were broken.