08 Aveo5 running rough (update with Torque app test results)

[boatdink]

45k miles regular scheduled maintenance.





Mode $06 report generated by Torque for Android
================================================

Vehicle VIN: Not present
Vehicle Manufacturer: Unknown
Vehicle Calibration ID: Not present

Test report:
------------------
MID:$01 TID:$05
Rich to Lean sensor switch time(calculated) - O2 Bank 1 Sensor 1
Max: 140ms Min: 0ms
Test result value: 46ms
PASS
----
MID:$01 TID:$06
Lean to Rich sensor switch time(calculated) - O2 Bank 1 Sensor 1
Max: 140ms Min: 0ms
Test result value: 42ms
PASS
----
MID:$01 TID:$81
- O2 Bank 1 Sensor 1
Max: 65,535Changes Min: 60Changes
Test result value: 226Changes
PASS
----
MID:$01 TID:$82
- O2 Bank 1 Sensor 1
Max: 65,535Changes Min: 60Changes
Test result value: 223Changes
PASS
----
MID:$01 TID:$83
- O2 Bank 1 Sensor 1
Max: 2.99996Ratio Min: 0.39843Ratio
Test result value: 1.09374Ratio
PASS
----
MID:$02 TID:$05
Rich to Lean sensor switch time(calculated) - O2 Bank 1 Sensor 2
Max: 400ms Min: 0ms
Test result value: 89ms
PASS
----
MID:$02 TID:$06
Lean to Rich sensor switch time(calculated) - O2 Bank 1 Sensor 2
Test incomplete or dependant test failed
--
MID:$02 TID:$bc
- O2 Bank 1 Sensor 2
Max: 25,000ms Min: 0ms
Test result value: 7,687ms
PASS
----
MID:$21 TID:$a1
- Catalyst Monitor Bank 1
Max: 65,535ms Min: 2,000ms
Test result value: 5,000ms
PASS
----
MID:$31 TID:$91
- EGR Monitor Bank 1
Max: 0kPa Min: -32.768kPa
Test result value: -2kPa
PASS
----
MID:$39 TID:$8f
-
Max: 8,191.75Pa Min: 2,540.5Pa
Test result value: 2,544.75Pa
PASS
----
MID:$3b TID:$84
- EVAP Monitor (0.090")
Max: 60Pa/s Min: 0Pa/s
Test result value: 0Pa/s
PASS
----
MID:$3c TID:$82
- EVAP Monitor (0.040")
Max: 20.75Pa/s Min: 0Pa/s
Test result value: 0Pa/s
PASS
----
MID:$3d TID:$80
- EVAP Monitor (0.020")
Max: 2,988.75Pa Min: -8,192Pa
Test result value: 629.75Pa
PASS
----
MID:$3d TID:$81
- EVAP Monitor (0.020")
Max: 679.75Pa Min: -8,192Pa
Test result value: 61.25Pa
PASS
----
MID:$41 TID:$b1
- O2 Heater Monitor Bank 1 - Sensor 1
Max: 65.535A Min: 0.087A
Test result value: 0.57A
PASS
----
MID:$42 TID:$b1
- O2 Heater Monitor Bank 1 - Sensor 2
Max: 65.535A Min: 0.093A
Test result value: 0.542A
PASS
----
MID:$a2 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 1 Data
Max: 65,535Count Min: 0Count
Test result value: 1Count
PASS
----
MID:$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:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 2 Data
Max: 65,535Count Min: 0Count
Test result value: 1Count
PASS
----
MID:$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:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 3 Data
Max: 65,535Count Min: 0Count
Test result value: 1Count
PASS
----
MID:$a4 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 3 Data
Max: 65,535Count Min: 0Count
Test result value: 1Count
PASS
----
MID:$a5 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 4 Data
Max: 65,535Count Min: 0Count
Test result value: 1Count
PASS
----
MID:$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
----
MID:$01 TID:$05
Rich to Lean sensor switch time(calculated) - O2 Bank 1 Sensor 1
Max: 140ms Min: 0ms
Test result value: 46ms
PASS
----
MID:$01 TID:$06
Lean to Rich sensor switch time(calculated) - O2 Bank 1 Sensor 1
Max: 140ms Min: 0ms
Test result value: 42ms
PASS
----
MID:$01 TID:$81
- O2 Bank 1 Sensor 1
Max: 65,535Changes Min: 60Changes
Test result value: 226Changes
PASS
----
MID:$01 TID:$82
- O2 Bank 1 Sensor 1
Max: 65,535Changes Min: 60Changes
Test result value: 223Changes
PASS
----
MID:$01 TID:$83
- O2 Bank 1 Sensor 1
Max: 2.99996Ratio Min: 0.39843Ratio
Test result value: 1.09374Ratio
PASS
----
MID:$02 TID:$05
Rich to Lean sensor switch time(calculated) - O2 Bank 1 Sensor 2
Max: 400ms Min: 0ms
Test result value: 89ms
PASS
----
MID:$02 TID:$06
Lean to Rich sensor switch time(calculated) - O2 Bank 1 Sensor 2
Test incomplete or dependant test failed
--
MID:$02 TID:$bc
- O2 Bank 1 Sensor 2
Max: 25,000ms Min: 0ms
Test result value: 7,687ms
PASS
----
MID:$01 TID:$05
Rich to Lean sensor switch time(calculated) - O2 Bank 1 Sensor 1
Max: 140ms Min: 0ms
Test result value: 46ms
PASS
----
MID:$01 TID:$06
Lean to Rich sensor switch time(calculated) - O2 Bank 1 Sensor 1
Max: 140ms Min: 0ms
Test result value: 42ms
PASS
----
MID:$01 TID:$81
- O2 Bank 1 Sensor 1
Max: 65,535Changes Min: 60Changes
Test result value: 226Changes
PASS
----
MID:$01 TID:$82
- O2 Bank 1 Sensor 1
Max: 65,535Changes Min: 60Changes
Test result value: 223Changes
PASS
----
MID:$01 TID:$83
- O2 Bank 1 Sensor 1
Max: 2.99996Ratio Min: 0.39843Ratio
Test result value: 1.09374Ratio
PASS
----
MID:$02 TID:$05
Rich to Lean sensor switch time(calculated) - O2 Bank 1 Sensor 2
Max: 400ms Min: 0ms
Test result value: 89ms
PASS
----
MID:$02 TID:$06
Lean to Rich sensor switch time(calculated) - O2 Bank 1 Sensor 2
Test incomplete or dependant test failed
--
MID:$02 TID:$bc
- O2 Bank 1 Sensor 2
Max: 25,000ms Min: 0ms
Test result value: 7,687ms
PASS
----


End of report.

[avguy]

Too much data there to plow through. From the realtime datastream monitor, the fuel trims should be bouncing between +10 and -10, hopefully most between +5 and -5. O2 sensor 1 should be moving up and down from around .1V to .9V.
What is the MAP sensor reading at warm idle, and is that value fairly steady? What is the TPS % reading at idle?

[boatdink]

At warm idle the intake manifold pressure is really steady at 4.35 psi. occasionally it might hit 4.5. TPS avg is 12.9%. Hoppefully im reading the right sensors. Also vacuum holds at 19.5 in/hg.

o2 1 is within that .1v-.9v. fuel trim is bouncy

.

that low valley happens occasionally.

[avguy]

All of those numbers sound fine, and are saying that there's no vacuum leak or any other significant engine issue for that matter. Most of what you've mentioned is related to the exhaust, so try tapping on the cat with a rubber mallet, in order to find out if there's anything loose and rattling around inside of it.

[Enjoyneering]

IMHO intake manifold pressure is too low. It should be around 5psi (35kPa) @ 13% TPS.

Plus you have:

MID:$02 TID:$06
Lean to Rich sensor switch time(calculated) - O2 Bank 1 Sensor 2
Test incomplete or dependant test failed

So it could be a vacuum leak or o2 sensor, and please change the spark plugs.

MID:$a4 TID:$0c
Misfire counts for last/current driving cycles(calculated) - Misfire Cylinder 3 Data
Max: 65,535Count Min: 0Count
Test result value: 1Count
PASS
----
MID:$a5 TID:$0b
EWMA Misfire counts (average) for last 10 drive cycles - Misfire Cylinder 4 Data
Max: 65,535Count Min: 0Count
Test result value: 1Count
PASS

[boatdink]

Spark plugs were changed the night before I did the test. It ran a little better after, but it still runs funky. I used Autolite Iridium XP with .044 gap. I was wondering about the misfire data too. I'm tearing apart the intake today and looking at the vacuum hoses. The guy/girl who originally owned it must've let it sit for a long time, as it only had 44k when I bought it December 2016. What are the major issues Aveo owners come across when their car sits for a while?

[RBRx]

Outside of bad fluids gas, oil etc... Id say rotors from light rust and rubbers that deteriorate but a year doesn't seem like much on the dry rot aspect of things. As for the misfires if you cleared it and they came back I suggest taking the vanity cover off and looking at the wires and coils and listening for arcs at night, maybe have a buddy rev the engine for good measure.