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[Jimbob]

last copy i have of my data showed..

O2 Sensor 1      215 mV
O2 Sensor 2      254 mV
O2-Loop 1 Integrator      122 Steps
O2-Loop 2 Integrator      121
O2-Loop 1 BLM Idle (Block Learn Map)      128 Steps
O2-Loop 2 BLM Idle (Block Learn Map)      129 Steps
O2-Loop 1 BLM Partial Load (Block Learn Map)      128 Steps
O2-Loop 2 BLM Partial Load(Block Learn Map)      125 Steps

your voltages are fairly different, and the low step count of one is strange

[RossMk2]

Ok so i will try that, but where do we go from here?

[Jimbob]

check the 02 sensor connections are ok...maybe use some switch cleaner.
check exhaust is sound.

[RossMk2]

the actual connections are fine. which one would you say is adrift? with the exhaust the only way is to get gaskets and refit

[RossMk2]

Right took a reading 1st thing this morning while ice cold and it struggling to idle.

Also Jimbob you might know, i went to reset learn values and it gives you two options: O2 and IAC resets then it brings up a page of the block learn values you want to reset. Now with O2 it auto loaded most of the values i only noticed one missing which i selected from drop down list so thats not the problem, what was happening was when i pressed 'start activation' it greys out and then just stops like that and i have to press 'stop activation' to move on. Does it take some time to reset the block learn values and it was just me not giving it the time it needs?

Readings:

"My Naff Code Reader" 090714 - PC based diagnostic tool                        
                        
Date and time>      08/01/2010. 07:43                  
                        
Workshop information:                        
                        
Please add your workshop                        
name in the settings window                        
                        
                        
Selected model>      1994      Omega-B      Engine      X 30 XE
                        
Control Unit:                         
                        
KW82 protocol initialized.                        
                        
ECU ID= PS      90457098      261203272      1267358445      4
                        
                        
Measuring blocks information:                        
                        
Identifier      1C                  
Battery Voltage      11.3 V                  
Immobiliser Signal      Not Received                  
Immobiliser      Inactive                  
TPS Signal (Throttle Position Sensor)      0.47 V                  
Simulated Idle Position      Active                  
Simulated Full Load Switch      Inactive                  
Mass Air Flow Sensor      0.82 V                  
Mass Air Flow Sensor      16 kg/h                  
Coolant Temperature      3.96 V                  
Coolant Temperature      9 °C                  
Intake Air Temperature      4.37 V                  
Intake Air Temperature      -4 °C                  
Engine Type      6 Cylinder                  
Transmission Coding      Automatic Transmission                  
Park/Neutral Switch      R-D-3-2-1  12V                  
A/C Information Switch (Air Conditioning)      Inactive 0V                  
A/C Compressor Switch (Air Conditioning)      Inactive 0V                  
Telltale (Check Light)      Off 12V                  
Fuel Pump Relay      Active 0V                  
Spark Angle before TDC (Top Dead Centre)      2 °CA                  
Ignition Coil Cyl. 1+4 (Cylinder)      Load                  
Ignition Coil Cyl. 2+5      Load                  
Ignition Coil Cyl. 3+6 (Cylinder)      Load                  
Knock Signal      Inactive                  
Knock Retard      0 °CA                  
Secondary Air Pump Relay      Inactive 12V                  
EGR Valve (Exhaust-Gas Recirculation)      Inactive                  
EGR Position Feedback (Exhaust Gas Recirculation)      0.60 V                  
Fuel Tank Ventilation Valve      0%                  
O2 Sensor 1      507 mV                  
O2 Sensor 2      449 mV                  
O2 Sensor Loop 1      Open                  
O2 Sensor Loop 2      Open                  
Air/Fuel Ratio 1      Lean                  
Air/Fuel Ratio 2      Lean                  
O2-Loop 1 Integrator      128 Steps                  
O2-Loop 2 Integrator      128                  
O2-Loop 1 BLM Idle (Block Learn Map)      129 Steps                  
O2-Loop 2 BLM Idle (Block Learn Map)      39 Steps                  
O2-Loop 1 BLM Partial Load (Block Learn Map)      128 Steps                  
O2-Loop 2 BLM Partial Load(Block Learn Map)      125 Steps                  
Hall Sensor      Inactive                  
Engine Speed Pulse      Inactive                  
Engine Speed      408 RPM                  
Idle Air Control      15 Steps                  
IAC Integrator (Idle Air Control)      170 Steps                  
IAC Adaptation Slope (Idle Air Control)      200 Steps                  
IAC Block Learn (Idle Air Control)      136 Steps                  
Desired Idle Air      61 kg/h                  
Actual Value Idle Air      13 kg/h                  
Desired Engine Idle Speed      1.050 RPM                  
Injection Pulse      5.8 ms                  
Engine Load Signal      2.1 ms                  
TPS Load Signal (Throttle Position Sensor)      0%                  
Vehicle Speed Pulse      Not Received 12V                  
Vehicle Speed      0 km/h                  
Intake Manifold Valve 1      Inactive 12V                  
Intake Manifold Valve 2      Inactive 12V                  
Torque Control      Inactive                  
A/C Cutoff Relay (Air Conditioning)      Inactive 12V                  
Diagnostic Request      Inactive 5V                  

[Matchless]

Why is there such a difference in the expected and actual idle air mass flows?
Is the air intake trunk intact?
No splits in the large breather pipe to crankcase?
ICV rubber boot OK?
Funny rubber seal under the plennum intact?

If manifold vacuum is also poor (17 inch ish) then I would be looking for an air leak. vacuum should be 19 -20 inch on a good engine

[RossMk2]

Why is there such a difference in the expected and actual idle air mass flows?
Is the air intake trunk intact?
No splits in the large breather pipe to crankcase?
ICV rubber boot OK?
Funny rubber seal under the plennum intact?

If manifold vacuum is also poor (17 inch ish) then I would be looking for an air leak. vacuum should be 19 -20 inch on a good engine

Well as to the breathers, the system coming from the plenum is blocked off as the intake system was spun around 180deg. There is a breather pipe coming from the breather box to vent underneath the car that may be why vacuum is different

[TheBoy]

Why is there such a difference in the expected and actual idle air mass flows?
Is the air intake trunk intact?
No splits in the large breather pipe to crankcase?
ICV rubber boot OK?
Funny rubber seal under the plennum intact?

If manifold vacuum is also poor (17 inch ish) then I would be looking for an air leak. vacuum should be 19 -20 inch on a good engine

this engine is in a Mk2 Astra - the ones with no front grip

[TheBoy]

loop 2 BLM idle is still way too low.

The steps are from 0 to 255 - resetting sets to 128, obviously enough.  I would expect oll the block learns to stay around that general 110-145 ish ballpark.

[Andy H]

loop 2 BLM idle is still way too low.

The steps are from 0 to 255 - resetting sets to 128, obviously enough.  I would expect oll the block learns to stay around that general 110-145 ish ballpark.

Now with O2 it auto loaded most of the values i only noticed one missing which i selected from drop down list so thats not the problem, what was happening was when i pressed 'start activation' it greys out and then just stops like that and i have to press 'stop activation' to move on.

I don't think it has reset  :-/

[Andy H]

Am I right in thinking that closed loop operation only occurs when the engine is up to temperature and the engine under load?

I didn't think self learning would occur at idle :-/

Do the readings make more sense at 'fast idle'? (1500-2000 rpm)

[RossMk2]

this engine is in a Mk2 Astra - the ones with no front grip

No need...... 

So from the looks of things bank 2 is at fault. Also notice the idle speed, as i say it will not idle when cold and even when warm doesnt get to near its suggested idle value according to that data.

Do we need a snapshot of fast idle?

[RossMk2]

"My Naff Code Reader" 090714 - PC based diagnostic tool                        
                        
Date and time>      10/01/2010. 18:06                  
                        
Workshop information:                        
                        
Please add your workshop                        
name in the settings window                        
                        
                        
Selected model>      1994      Omega-B      Engine      X 30 XE
                        
Control Unit:                         
                        
KW82 protocol initialized.                        
                        
ECU ID= PS      90457098      261203272      1267358445      4
                        
                        
Measuring blocks information:                        
                        
Identifier      1C                  
Battery Voltage      11.9 V                  
Immobiliser Signal      Not Received                  
Immobiliser      Inactive                  
TPS Signal (Throttle Position Sensor)      0.47 V                  
Simulated Idle Position      Active                  
Simulated Full Load Switch      Inactive                  
Mass Air Flow Sensor      0.80 V                  
Mass Air Flow Sensor      15 kg/h                  
Coolant Temperature      2.67 V                  
Coolant Temperature      41 °C                  
Intake Air Temperature      4.19 V                  
Intake Air Temperature      2 °C                  
Engine Type      6 Cylinder                  
Transmission Coding      Automatic Transmission                  
Park/Neutral Switch      R-D-3-2-1  12V                  
A/C Information Switch (Air Conditioning)      Inactive 0V                  
A/C Compressor Switch (Air Conditioning)      Inactive 0V                  
Telltale (Check Light)      Off 12V                  
Fuel Pump Relay      Active 0V                  
Spark Angle before TDC (Top Dead Centre)      1 °CA                  
Ignition Coil Cyl. 1+4 (Cylinder)      Spark                  
Ignition Coil Cyl. 2+5      Load                  
Ignition Coil Cyl. 3+6 (Cylinder)      Load                  
Knock Signal      Inactive                  
Knock Retard      0 °CA                  
Secondary Air Pump Relay      Inactive 12V                  
EGR Valve (Exhaust-Gas Recirculation)      Inactive                  
EGR Position Feedback (Exhaust Gas Recirculation)      0.60 V                  
Fuel Tank Ventilation Valve      0%                  
O2 Sensor 1      107 mV                  
O2 Sensor 2      829 mV                  
O2 Sensor Loop 1      Closed                  
O2 Sensor Loop 2      Closed                  
Air/Fuel Ratio 1      Rich                  
Air/Fuel Ratio 2      Lean                  
O2-Loop 1 Integrator      154 Steps                  
O2-Loop 2 Integrator      102                  
O2-Loop 1 BLM Idle (Block Learn Map)      128 Steps                  
O2-Loop 2 BLM Idle (Block Learn Map)      128 Steps                  
O2-Loop 1 BLM Partial Load (Block Learn Map)      128 Steps                  
O2-Loop 2 BLM Partial Load(Block Learn Map)      128 Steps                  
Hall Sensor      Inactive                  
Engine Speed Pulse      Active                  
Engine Speed      408 RPM                  
Idle Air Control      15 Steps                  
IAC Integrator (Idle Air Control)      167 Steps                  
IAC Adaptation Slope (Idle Air Control)      200 Steps                  
IAC Block Learn (Idle Air Control)      128 Steps                  
Desired Idle Air      55 kg/h                  
Actual Value Idle Air      12 kg/h                  
Desired Engine Idle Speed      1.040 RPM                  
Injection Pulse      5.9 ms                  
Engine Load Signal      2.0 ms                  
TPS Load Signal (Throttle Position Sensor)      0%                  
Vehicle Speed Pulse      Not Received 12V                  
Vehicle Speed      0 km/h                  
Intake Manifold Valve 1      Inactive 12V                  
Intake Manifold Valve 2      Inactive 12V                  
Torque Control      Inactive                  
A/C Cutoff Relay (Air Conditioning)      Inactive 12V                  
Diagnostic Request      Inactive 5V                  

Thats after a reset.

Still worrying me that the idle air value is really low, might be why its not idling correctly maybe? What could this mean, that the pipe going to idle is too thin or that there is an air leak somewhere before it? I cant find one mind.

Also the what does the mV value mean on the O2 sensors as they are stupidly high.

[Tony H]

An idea I have often thought about is, to avoid any complications that could arise from disconnectng and removing the battery has anyone concidered hooking the leads up prior to removal to a boost pack. Can anyone see any problems or drawbacks doing that? :-/

[Andy H]

Have you done a compresion test?

I'm thinking that the learned values are per bank. If one cylinder in a bank is doing something that can't be measured then it could really confuse the ECU.