Turbo gone again..
- Thread starter JayL
- Start date
Llia
New member
I hope you can get it fixed cheap.Yet another thing I will be worrying about. I was always weary of getting a turbo car.
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Did you also check the wastegate for any play? Again, GM says that a hairline crack is normal but if the crack is significant or if the wastegate does not move freely or close flush then it def should be replaced.
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Toadz
New member
Yet another thing I will be worrying about. I was always weary of getting a turbo car.
Thanks. Hoping the dealer will take care of it as I'm still under warranty.
Yes, the wastegate did seem to have a little bit of play in it. Moved it back and forth a few times and that's where the wastegate rests, open like in the picture.
You are correct, definitely not closing all the way even after opening and closing it a few times. Yes, lack of power lately and a code popped up one day as well. Funny thing is that the code never showed up again after being cleared.
Tormach
Member
Your sounds like it's starting to fail just like mine did. The code going off was hit or miss 3-4 time in a month span, stayed in last time for about 4-5 days then went to history. Finally was replaced once I got the code back that same day of the appointment.
If you can determine what can trigger it.. like my case was accelerating from the on ramp to the highway.
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If you can determine what can trigger it.. like my case was accelerating from the on ramp to the highway.
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Toadz
New member
I believe mine just randomly came on while cruising home from up north, steady speed of 60 MPH with rolling hills.
Tormach
Member
As of right now I have my catch can setup in place the moment I had the turbo replaced and I am inspecting the intake on the turbo daily for any blow by and so far Zero at the turbo. I am finding oil in/at the pcv hose port in the intake manifold and some build up in the catch can.
My current conclusion from all of my inspecting and tracing back the root of what caused the turbo to fail is two years ago when the cam cover failed. Also the other dealerships lack of inspecting all related systems when the replaced only the cam cover.
To date, the failure of the cam cover has taken out these parts:
* cylinder 4 spark plug
* Coil pack boot 4 for cylinder 4
* Failure of the pcv nipple (I did not find this one till just last week after alot of cleaning of the port and inspecting) in the intake manifold resulting in blow by into the turbo. As well as blow by all the way to the charge pipe and throttle body
* Failure of the pcv hose line to the turbo. The line was clogged and also was very brittle.
- note I was running without a catch can for a year and after installing it blow by stopped but the damage I suspect was already done.
* Final failure was the turbo waste gate and eventually the stock bpv. When I was running the car all back to stock try to get the code P0299 triggered (eventually did after 80miles) again, I inspected the turbo intake and the level of blow by in the pcv port in the turbo intake was shocking.
I wish the Chevy dealer I am going to now would have let me see the old turbo so I could see the level of damage/coking/build up in it but there policy wouldn't let me.
The one thing I would buy in a heart beat would be an aftermarket aluminum milled redesigned cam cover with replaceable/rebuildable rupture disk system that doesn't vent into cylinder 4 plug port. After that a custom intake manifold with a properly designed pcv system.
Sorry for the wall of text, but love to know everyone's thoughts on my findings.
Another through that just came to me, could the stock turbo with integrated exhaust manifold and it's short design be causing to much heat to be getting to the turbo stressing the crack at the wastegate?
Sent from my XT1254 using Tapatalk
My current conclusion from all of my inspecting and tracing back the root of what caused the turbo to fail is two years ago when the cam cover failed. Also the other dealerships lack of inspecting all related systems when the replaced only the cam cover.
To date, the failure of the cam cover has taken out these parts:
* cylinder 4 spark plug
* Coil pack boot 4 for cylinder 4
* Failure of the pcv nipple (I did not find this one till just last week after alot of cleaning of the port and inspecting) in the intake manifold resulting in blow by into the turbo. As well as blow by all the way to the charge pipe and throttle body
* Failure of the pcv hose line to the turbo. The line was clogged and also was very brittle.
- note I was running without a catch can for a year and after installing it blow by stopped but the damage I suspect was already done.
* Final failure was the turbo waste gate and eventually the stock bpv. When I was running the car all back to stock try to get the code P0299 triggered (eventually did after 80miles) again, I inspected the turbo intake and the level of blow by in the pcv port in the turbo intake was shocking.
I wish the Chevy dealer I am going to now would have let me see the old turbo so I could see the level of damage/coking/build up in it but there policy wouldn't let me.
The one thing I would buy in a heart beat would be an aftermarket aluminum milled redesigned cam cover with replaceable/rebuildable rupture disk system that doesn't vent into cylinder 4 plug port. After that a custom intake manifold with a properly designed pcv system.
Sorry for the wall of text, but love to know everyone's thoughts on my findings.
Another through that just came to me, could the stock turbo with integrated exhaust manifold and it's short design be causing to much heat to be getting to the turbo stressing the crack at the wastegate?
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mysterslyckster
New member
I've got a stock tune and also have an EGT gauge with the thermocouple probe installed on turbocharger outlet just a millimeter or two from the back side of the turbine blade. Not the most ideal spot, but cruising at 60 mph on the highway I see about 1200-1400 F on my 2013 RS.
Blue Moon Sonic
New member
I've got my old turbo still from when I replaced mine. I can safely say there was a lot of carbon build up on the exhaust turbine and when it was spun, it would make a gritty grinding sound. I want to attribute this to the PCV system failure and blow-by making its'way not only into the combustion chamber and intake tracts, but also into the exhaust side of things. However, I cannot say for sure as of right now until I pull the turbo again for inspection and overhaul the PCV system.
Blue Moon Sonic
New member
No problem. I'll find my old pulled apart turbo and get some good pictures of everything. Then everyone can see what happens after a while when the failure occurs.
Be prepared to have a puddle of oil towards the throttle body and to have it drain off when you start removing the charge tubes. I would recommend using simple green when cleaning the intercooler and the turbo pipes. I would also pull the throttle body off for cleaning at the same time just to ensure the part continues to function properly so you retain throttle response.
suitcasejefferson
New member
This is not good news for me. My sister bought a 2013 turbo. I was going to buy a 2014 1.8, but some things came up that changed my plans. Now I am inheriting my sisters 1.4 turbo with 60,000 miles on it. She has never been one to properly maintain a car. She claims she has never had any problems with it, but I have always avoided turbocharged cars because of how complicated they are. I was looking for a transportation car. I drag race a supercharged V8 powered Chevy S10, but that's definitely not good for transportation. You can expect to work on a race car. I will definitely not be racing the Sonic.
EyeluvSmegma
New member
That S-Dime sounds fantastic. I have a 6003 mile turbo in my garage, awaiting delivery of my MPFab IC set up and do a complete change out. I bought a baffled catch can too.
The Sonic will never be fast, but it is efficient and fun as hell to drive! It's "Zippy"... And it's much more fun to drive a slow car fast, than to drive a fast car slowly.
Toadz
New member
Well, disappointed with the dealership. Aside from being given a filthy older model Malibu for a rental, they claim that the crack is a normal casting seam and the turbo is operating properly, even though the car is down on power. I'm not even sure if they actually looked at the inside of the turbo because it's painfully obvious that there is a large crack in the turbo and the wastegate does not shut.
My family and I have owned Chevy's and GMC's all my life but honestly this may be the last.
My family and I have owned Chevy's and GMC's all my life but honestly this may be the last.
Well, disappointed with the dealership. Aside from being given a filthy older model Malibu for a rental, they claim that the crack is a normal casting seam and the turbo is operating properly, even though the car is down on power. I'm not even sure if they actually looked at the inside of the turbo because it's painfully obvious that there is a large crack in the turbo and the wastegate does not shut.
My family and I have owned Chevy's and GMC's all my life but honestly this may be the last.
Did you tell them you had it inspected and it's clear the valve doesn't shut? If you're under warranty I'd make that point until they tolled my car into the service bay. There's definitely a GM bulletin for the hairline crack so that's their primary excuse. But the worn wastegate is visible and an issue that they shouldn't ignore. Also having a P0299 is the most helpful since it almost always = new turbo
good luck AMD find another dealer if you have to!
