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09 SS Turbo out

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09 SS Turbo out

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Old 03-10-2018, 08:05 PM
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09 SS Turbo out

So it appears my Turbo has gone out... Stepping on the gas bogs down the engine instead of turbocharging it, and parking the car doesn't result in that little metallic click. Not seeing any codes either. Could use some ideas on how to troubleshoot
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Old 03-10-2018, 08:39 PM
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Wow, that could be a lot of things, don't even know where to start.

Maybe look into the "no click" situation first. Perhaps whatever is causing that is making the computer say "Houston, we have a problem, must protect the system, no turbo for you!"
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Old 03-11-2018, 04:46 AM
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Originally Posted by ducky69247 View Post
So it appears my Turbo has gone out... Stepping on the gas bogs down the engine instead of turbocharging it, and parking the car doesn't result in that little metallic click. Not seeing any codes either. Could use some ideas on how to troubleshoot
What are you getting for boost? Max is 14/15 psi stock.
What metallic click are you talking about?
Low fuel pressure could be a possible cause also.
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Old 03-11-2018, 01:14 PM
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Originally Posted by Cat Man HHR View Post
What are you getting for boost? Max is 14/15 psi stock.
What metallic click are you talking about?
Low fuel pressure could be a possible cause also.
Definitely not getting 14-15. Even though the needle moves on the boost gage, the engine bogs down instead, (I can't hear the soft whir of the turbo) and when I park or shut off the engine, I don't hear the sound the boost system makes when it depressurizes, aka, "metallic click."
I would hope low fuel pressure would show up on the ecm...
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Old 03-11-2018, 01:35 PM
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I've never noticed a click. Right before you park or shut off engine, the engine is at idle, and there is no boost to depressurize. Are you sure the click is not from the shifter moving into 'park'? Of course, now you can't check because it is not clicking anymore...

Simple things, like check your oil and coolant levels, the turbo needs both.
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Old 03-11-2018, 01:40 PM
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Originally Posted by RJ_RS_SS_350 View Post
I've never noticed a click. Right before you park or shut off engine, the engine is at idle, and there is no boost to depressurize. Are you sure the click is not from the shifter moving into 'park'? Of course, now you can't check because it is not clicking anymore...

Simple things, like check your oil and coolant levels, the turbo needs both.
Yes, I'm sure it's not the shifter... I've been driving it for going on two years now and every time I ever shut it off, it clicks like that when it depressurizes. Either when I stop moving or when I shut off the engine. 5 to 10 seconds later it clicks. It keeps pressure by default from what I have figured out. So that it's always ready to go. And when it doesn't need it, it releases it. I'm checking everything out. Trying to get it up on a lift and go inch by inch, I was just hoping someone had some insight.

If anyone is interested, here's a diagnostic log
Mode $06 report generated by Torque for Android
================================================

Vehicle VIN: 3GNCA73X89S621057
Vehicle Manufacturer: Chevrolet
Vehicle Calibration ID: 12629314
12633787
12629330
12629332


Test report:
------------------
MID:$01 TID:$83
- O2 Bank 1 Sensor 1
Max: 1.99882 Min: 0.29988
Test result value: 1.00723
PASS
----
MID:$01 TID:$84
- O2 Bank 1 Sensor 1
Max: 0.06997 Min: -0.06997
Test result value: -0.00149
PASS
----
MID:$02 TID:$05
Rich to Lean sensor switch time(calculated) - O2 Bank 1 Sensor 2
Max: 400ms Min: 0ms
Test result value: 10ms
PASS
----
MID:$02 TID:$07
Minimum sensor Voltage for test cycle(calculated) - O2 Bank 1 Sensor 2
Max: 0.44969V Min: 0V
Test result value: 0V
PASS
----
MID:$02 TID:$08
Maximum sensor Voltage for test cycle(calculated) - O2 Bank 1 Sensor 2
Max: 1.14778V Min: 0.44969V
Test result value: 0.89938V
PASS
----
MID:$02 TID:$81
- O2 Bank 1 Sensor 2
Max: 0.64026V Min: 0V
Test result value: 0.6305V
PASS
----
MID:$02 TID:$82
- O2 Bank 1 Sensor 2
Max: 1.14778V Min: 0.64026V
Test result value: 0.65002V
PASS
----
MID:$21 TID:$84
- Catalyst Monitor Bank 1
Max: 1.99882 Min: 0.20301
Test result value: 0.92915
PASS
----
MID:$39 TID:$80
-
Test incomplete or dependant test failed
--
MID:$3c TID:$80
- EVAP Monitor (0.040")
Test incomplete or dependant test failed
--
MID:$3d TID:$88
- EVAP Monitor (0.020")
Test incomplete or dependant test failed
--
MID:$3d TID:$8c
- EVAP Monitor (0.020")
Test incomplete or dependant test failed
--
MID:$41 TID:$85
- O2 Heater Monitor Bank 1 - Sensor 1
Max: 1,302.80005C Min: 805C
Test result value: 820.20001C
PASS
----
MID:$42 TID:$81
- O2 Heater Monitor Bank 1 - Sensor 2
Max: 900Ohm Min: 0Ohm
Test result value: 124Ohm
PASS
----
MID:$81 TID:$80
- Fuel System Monitor Bank 1
Max: 6.04% Min: -6%
Test result value: 0.6%
PASS
----
MID:$81 TID:$82
- Fuel System Monitor Bank 1
Max: 1.31925 Min: 0.77958
Test result value: 1.11072
PASS
----
MID:$a2 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 1 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a2 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 1 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a3 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 2 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a3 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 2 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a4 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 3 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a4 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 3 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a5 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 4 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----
MID:$a5 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 4 Data
Max: 65,535Count Min: 0Count
Test result value: 0Count
PASS
----


End of report.

Last edited by ducky69247; 03-11-2018 at 04:26 PM.
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Old 03-11-2018, 05:19 PM
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When did you clear codes and why?

I can tell because the EVAP tests are incomplete.
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Old 03-11-2018, 05:30 PM
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Originally Posted by ducky69247 View Post
It keeps pressure by default from what I have figured out. So that it's always ready to go. And when it doesn't need it, it releases it.
When you shut the engine off there is no stored turbo pressure. You will only have boost under a load condition. It doesn't release pressure either, except for how the waste gate on it operates.
If the waste gate valve is hung open or missing, I can see you having a low boost condition.
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Old 03-11-2018, 05:56 PM
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FYI.
I hear that click also. Sounds more like a light "clunk" sound. About 20 seconds after shutdown like the OP stated.
The closest thing that I can compare it to. You know that little safety ball in a shop vac that shuts off the suction when the shop vac tips over ? When you shut the vac off and the safety ball slides back to position, the clunk sound it makes is comparable to the sound my SS makes.

I think it was our member Dr. Loch that explained one time what that noise is. Maybe he'll read this and post up some info.
I believe it's something to do with the throttle plate.

Last edited by firemangeorge; 03-11-2018 at 06:28 PM.
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Old 03-11-2018, 06:56 PM
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Found a couple threads

https://www.chevyhhr.net/forums/hhr-...hutdown-17977/

https://www.chevyhhr.net/forums/hhr-...-parked-14711/

Just tried it on my SS. Just like in post #13 of the second link, it did really sound like the throttle body.

So if your throttle body is not working properly, that could certainly cause the issues you're having.
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