thank you.

 

Thank you.

 

Hey folks, dropped off car at dealer today, was informed of an engine tear down to occur as low compression was detected in a cylinder. I will get my build date, etc but in the meantime......did everyone with a bad piston get new parts? Or a new engine? I do not want a rebuilt motor on my ATS.

Thanks in advance.

 

Add me, I just dropped mine off yesterday, rough idle loss of power and CEL.(misfire pistion #3) 13 ATS 2.0t lux RWD auto. 49186miles
Compression test failed, they are tearing it down today to see if they will replace the parts or the engine. Is there anything out there that says they are replacing motors regardless? Just dont want to do this again.

 

^Damn, you were so close to being out of warranty at 50,000 miles.

 

In this case, it would 70,000. Powertrain.

Had you noticed rough idle before hand and it just start getting worse until CEL came on?

 

Louie, you are correct on both fronts.

 

Thanks!

Ive been getting some rough idle, but it was only when the car was under heavy load and when coming to a stop quickly and/or releasing the brake to accelerate. At least 650lb in the car. When it is just me, no rough idle.

 

Checking in with a 2014 Buick Regal Turbo, 2.0 LTG. 29k miles. Had the classic symptoms last week, CEL and also a blinking Stabilitrak light. Took it to the GM service center and had to have a piston replaced. Bulletin PI1178E. Took a few days, have it back now and everything is fine. Luckily it is still under warranty, but still unnerving. Hope it's not an issue I have to deal with down the line.

 

So now that GM is replacing motors instead of pistons, does anyone know if they're putting the 2015 engine in or is it the same engine from the 13/14 with bad pistons? Because in that case it's kinda stupid to jump from replacing just the pistons to the whole engine when the pistons are still poor quality.

 

I think they are still sometimes replacing pistons and sometimes replacing the whole engine. There was someone complaining here recently that he wanted a new engine and they didn't agree. I also don't think there were any physical differences in the 2013 to 2015 engine blocks or pistons (hopefully manufacturing them correctly in later cars) so reality is they just need to manufacture the whole thing correctly.

 

If it's any consolation, it seems the grass is actually browner on another side of the fence. The Mustang 6G forum has a thread where people list their EcoBoosts that HAVEN'T blown up: http://www.mustang6g.com/forums/showthread.php?t=48712

 

I believe the ecoboost uses forged pistons but I could be wrong. Probably why they're not having issues

 

No, they are having serious problems, to the point that someone felt it would be easier to post the ones that didn't blow rather than ones that did. Certainly not really the case, but it shows the frustration.

 

I feel like we are in a period of time where a bunch of automakers (Ford, GM, BMW, VAG to some degree) got scared about cafe standards and high fuel cost of 5-7 years ago and forced a bunch of NA powertrain engineers to suddenly design turbo motors without a hole lot of experience or for the same budget as the NA motors. The results show that everyone screwed up and under estimated the budget it takes to do it right, and that the next gen of turbo motors would learn the lessons and get it right.

Makes my miss my 9000 Aero. Those guys knew what they were doing with similar power and fuel economy without needing DI.

 

27k and cyl 3/4 lost compression. Late 2014 build date. Waiting for GM to confirm engine replacement for dealership.

Rough idle and smoking heavy on start up.

 

14k and late 2014 build. Took it in with #4 misfire. Dropped it off this morning. We will see what happens.

 

Well, I was driving home today, and noticed a rough engine after starting my trip home, got all but 6 miles from home and the engine started shaking so badly it felt like it was going to blow up, the TCM and Stablitrak lights flicked on, and the Check engine light started flashing. Restarted it a few times and it's driveable again (with a rough idle), does this sound like a misfire or the pistons starting to go bad?

 

Just kidding everyone, my motor just blew. 2013 ATS4, I'll look up the build date when I get it back, but 29,300 miles. At least I got a 2016 loaner!

 

Did anyone get a tapping noise at idle before things went bad?

 

I'm at 18.5k right now. No signs of gremlins on my 13 ats4 other than the headlights weren't operating like they should. After a computer reset they work fine. I'll check my build date later. Makes me nervous to upgrade with the issues.

 

I have a 2013 ATS 2.0T AWD with 30,000 miles. Noticed a huge power loss in acceleration on my way home, then the check engine light came on. I'll follow up with what's found at the dealer service

 

38K 2013 premium. Add me to the list Cylinder 2 cracked.

 

The interesting statistical analysis would be how many of these failed engines were tuned and how many not? I understand that many may not want to admit that their engine was tuned because of fear of warranty denial, etc. But it would be great to see the correlation.

HD: How about ford Mustang? It is the tuned one or all of them are prone to this issue?

 

^^^ Your problem is that you don't have all the data that GM has on this engine... such as total number built, build dates, failure by make, mileage at time of failure etc. So, what you see here is just a snap shot.

 

2015 ats 2.0t RWD. Blew #3 piston, full warranty new engine from factory..... About 5,000 km, no build date as its being finished as we speak...

Was driving home thing shuttered bad, then tc light comes on and stabilitrack warning and check engine all on, started shifting like a bag of bolts(auto) really chunky and herd down shifting and going up.

Straight into dealership, as well as blown piston, nice chunk came off, a small piece of ceramic broke off the plug in the same bank right by the point and that was spit out somewhere after carving a top to bottom gouge in the cylinder wall...

Mechanic at dealership says they have seen about 10 of them come in all between 5,000 and 7,000 kilometres.

Run 93 octane full time, lives in sport mode....

Will see if it goes on the next engine, if so, just gonna pay the diff and go v swap...

Only thing I can make of the problem from research and some back yard n knowledge would be valve float, not super familiar with the problem, but appears it can cause things to hit and bind which causes blown Pistons in other engines.


Maybe GM cheaped out on the valve sprigs....

 

Hey all I'm new just got a 15' ATS 2.0T AWD Sedan popping through this thread it seems that the 2015s are very small minority of the reported cases with the majority being 13's and 14's , is the consensus the 15 is largely fixed with new tune and plugs ?

I'm anxious to get an after market tune but dont want to run into issues with the pistons and have GM pull powertrain warranty on me. currently the car has 13,000kms and is running awesome, the odd shutter at idle but nothing alarming to me, my old Cobalt SS/TC shook a lot more at idle and was totally fine.

 

Want to keep your warranty:
1 - Don't put a tune on it
2 - If you do don't post anything about it on these forums.

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gotcha, that aside though , are the 15's more "immune" if you will than previous years? I plan to have a good discussion with the service manager on the first visit and just chat with him, see where he lands on it all. Things like catch cans shouldn't hurt only help ... (if installed correctly don't want to open that "can" of worms though huge topic as i understand it).

Thanks for the reply oemtech!

 

There was a rash of blown motors mostly 13's, some early 14's and sprinkling of 15's IIRC.

Unless you have a really good relationship with your, SA and/or Srv Mgr... The less they know the better.

I spent months working on CC's and Intake tubes and my opinion is you only need a $5 check valve in the fresh air line that is attached to the intake tube. I made my own intake tube for about $75.

If you search for my posts you will find pages of discussion on CC's and the like.

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