Turbo gone again..

[Tormach]

I would think that since the IM / pcv is covered under powertrain an extended powertrain should still cover it. That IM is a $270 part, no small change, so fight if you need to make sure it's covered!

I replaced the IM without using GM warranty mainly because I wanted to port the manifold. At the time I also didn't feel like dealing with GM to replace it then still have to remove it myself to port it. Now, if the orange pcv fails again I'll warranty it and skip the porting.

I didn't replace the pcv hose to the turbo though so I'll need to check if that one way valve is still functioning correctly at the turbo inlet side.

Did a recheck last weekend and the orange pcv is still there after 5k miles and 3 months:

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Thank you, just looking at your pic (just looked at all the pics and video i took and no sign of it) i can conclude my is missing.. ill check again anyways when i get home. :banana:

Yes, def going to get them replace it under warranty.

 

[Blue Moon Sonic]

Are you running the correct oil filter for your brand of oil filter housing?

That little PCV nipple is hard to spot. It's towards the firewall. Mine was covered in crud this time. I had to use q-tips to try and wipe the gunk off to see it. Your manifolds PCV port looks a lot cleaner than mine.

$80 for the CRUZE forum kit + $60 for the BNR TB Spacer. Then again I was looking at another manifold. A clean one I can build from. My only question would be why they ran the hose and PCV valve under the manifold. I would like it on top possibly tee'd into the PCV hose to the turbo. Then Tee'd into the vacuum port behind the throttle body, without the need for a TB spacer.

I just noticed the O-Rings on my PCV hose were busted. Needs a new one. 40,000 miles.
The hose has a one way valve inside of it. I tried blowing air from the turbo side to the intake side and it was blocked. Then i tried from the intake side to the turbo side and the air was able to flow through, but was somewhat restricted.

Thank you for posting this. Much simpler way of rerouting the PCV vs the write up on this forum. Cheaper than a new IM when you are out of warranty

 

[JayL]

Thanks for everyones input, I have ripped everything apart and everything looks good except play in the wastegate pin. Can I just buy an aftermarket wastegate? Chevy got back to me today and they will not cover another turbo. This will be the last Chevy I buy. I figured I would learn my lesson after the third one. I have had a few non GM turbo cars and never had these issues.

 

[Llia]

There must be a way to fix the wastegate play.

What a big disparity. $350 for new Turbo from Rockauto vs all the other places selling it for $900+

 

[MaD]

Yuppers on the 900 from the dealer... thank god for the 10 year 100k mile warranty... :banana:

 

[RMinNJ]

Big savings at rockauto.. how hard is it to replace the turbo yourself?

 

[Blue Moon Sonic]

Big savings at rockauto.. how hard is it to replace the turbo yourself?

Not that difficult on these cars. It's relatively straight forward. There are a couple manifold bolts that are a royal PITA to get to when doing the procedure.
Replaced mine in the work parking lot in a few days because of limited tools. If you have everything including the coolant, shouldn't take you more than a day to do by yourself.

There must be a way to fix the wastegate play.

Pretty sure forge now offers an aftermarket wastegate actuator for these cars now, but I could be wrong on that one.

 

[ScarabEpic22]

It seems that Forge does indeed offer a wastegate actuator for our 1.4T engines! Forge 1.4T wastegate actuator

However, it is worth mentioning that it is not listed as compatible with the Sonic/Cruze (first gen), BUT from what I'm aware of it's the same engine/turbo used in the Vauxhall vehicles.

 

[cuartz7o]

that rock auto turbo is it a Garrett OEM? I've seen a few turbo/manifolds available for the sonic/cruze/trax and the cheaper ones I notice do not say Garrett down the side of the turbo inlet leading me to believe the difference in price may also mean a difference in performance/longevity/reliability.

OEM Garrett Turbo:

Dorman Turbo: (there is a thread going on the cruze forum where a person bought one but has not tested it yet it looks like)

The Dorman unit is made in China and the Garrett unit is made in Romania. That price difference is for real tho! $350 vs $900 opcorn:

 

[Maddmatts]

They could also be remanufactured cores of all the turbos dealerships had to send back. I wouldn't be surprised if they get auctioned off as a lot every now and then.

 

[MaD]

Good possibility, but that casting that fails would be the area of concern, from what if seen on mine, the wastegate hole is fully cracked all the way around the hole... what do you think??

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[MaD]

Sorry. .. can't seem to upload the pic from my phone... but my burned turbo pic is in the what did you do with you sonic today...[emoji55]

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[Blue Moon Sonic]

Good possibility, but that casting that fails would be the area of concern, from what if seen on mine, the wastegate hole is fully cracked all the way around the hole... what do you think??

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It would seem that this is going to be the common failure point on these turbos. Same location mine cracked.

 

[MaD]

I think all the failures are that way... [emoji53]

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[Blue Moon Sonic]

I think all the failures are that way... [emoji53]

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I would like to suspect so. The question now becomes. What is causing the wastegate port to crack in the cast manifold? This actually has me wondering if mine failing when it did was a result of my behalf, bad castings of the exhaust manifold, or a combination of both the hard driving and boosted launches mixed with weak castings from the factory.

 

[MaD]

You would think they would of thought of the high heat that would be there... but ya know... cheaper is better... [emoji52]

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[cuartz7o]

There's a GM bulletin that mentions a *small hairline* Crack is normal when diagnosing P0299 fault. Problem is that Crack expands over time then can definitely cause turbo failure.

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[Blue Moon Sonic]

There's a GM bulletin that mentions a *small hairline* Crack is normal when diagnosing P0299 fault. Problem is that Crack expands over time then can definitely cause turbo failure.

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Except in my case, the P0299 code never popped up and I didn't find out until I was trying to diagnose my boost loss issues and oil burning problems. Regardless, This is actually a major problem and shouldn't happen ever. Guess this is as good of a reason as ever to upgrade your turbo to a larger setup.

 

[Tormach]

Yup, that is my plan down the road. Even if it is just a mildly large turbo w/ custom exhaust mani.

 

[Llia]

I've been getting an odd chunk sound when the auto downshifts. Feel like the engine is exhaust braking. Threw it in neutral a few times. Also tried manual mode and up-shifted so it wouldn't automatically downshift. Also held the gas pedal and brake when stopping to try and give the engine load to see if it was because I let off the gas that made it chunk