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[Kevin Wood]

It wasn't fully up to temperature, i'll do that this evening.
The air filter is out at the moment, the O2 sensor bank 1 does cycle up and down all over the place, i wasn't sure if it was supposed to do this.
I will run it again this evening at optimal operating temperature..
Thanks Kevin...

OK. Give it a run with the MAF disconnected too so we can compare the two (it will raise fault codes, of course).

Kevin

[mathewst]

Here is a little help.
My readings from "My Naff Code Reader" were like this...
MAF 12kg/h
Injector time 2.7 ms
B1S1 bank1 Sensor heater 1 Active
B1S1 bank1 Sensor 1 98 mV
B1S1 bank1 Air/Fuel ratio Rich
B1S2 bank1 Sensor 2 heater 1 Active
B1S2 bank1 Sensor 2 666
B1S2 bank1 Air/Fuel ratio Rich
O2 sensor loop closed

[Kevin Wood]

Here is a little help.
My readings from "My Naff Code Reader" were like this...
MAF 12kg/h
Injector time 2.7 ms
B1S1 bank1 Sensor heater 1 Active
B1S1 bank1 Sensor 1 98 mV
B1S1 bank1 Air/Fuel ratio Rich
B1S2 bank1 Sensor 2 heater 1 Active
B1S2 bank1 Sensor 2 666
B1S2 bank1 Air/Fuel ratio Rich
O2 sensor loop closed

Those readings are what I would have expected.

Kevin

[mathewst]

Mark if you need more readings from me to do a cross reference just ask, and I'll try to post them

[mathewst]

HMMMM you say ignition spark angle 2,7 CA
Mine reads 41,6!!!!

[mark.adams]

HMMMM you say ignition spark angle 2,7 CA
Mine reads 41,6!!!!

What does this mean?? Is there a possibility my timing is out, would that make it run rich??

[mark.adams]

Total number of fault codes: 1

P0304 - Cylinder 4 Misfire Detected
 (02) - Not present

"My Naff Code Reader" 090714 - PC based diagnostic tool

Date and time>,10/09/2009. 19:47

Workshop information:

Marks Omega


Selected model>,2002,Omega-B,Engine,Z 22 XE

Control Unit:

Keyword #1: EF
Keyword #2: 8F
Normal timing parameter set.
systemSupplierSpecific: L       
VIN: W0L0VBM6931053222
vehicleManufacturerECUHardwareNumber 24426542 DG
systemSupplierECUHardwareNumber: SIE  0116004500
systemSupplierECUSoftwareNumber: 6586055136 
systemSupplierECUSoftwareVersionNumber: 0701
exhaustRegulationOrTypeApprovalNumber: S01003
systemNameOrEngineType:  Z22XE
RepairShopCodeOrTesterSerialNumber:  Not programmed
ProgrammingDate:  FFFFFFFF

Identifier: 1606

CalibrationDate: O109301C
CalibrationEquipmentSoftwareNumber: l2c9300a
ECUInstallationDate: 6586055204 
VehicleManufacturerSpecific: 3200

Measuring blocks information:

Battery Voltage,13.4 V
Main Relay,Active
Fuel Pump Relay,Active
APP Sensor 1 (Accelerator Pedal Position),1.00 V
APP Sensor 2 (Accelerator Pedal Position),0.49 V
Calculated Pedal Position,0 %
TP Sensor 1 (Throttle Position),0.53 V
TP Sensor 2 (Throttle Position),4.51 V
Calculated Throttle Position,4 %
Throttle Position,Idle
Engine Speed,746 RPM
Mass Air Flow Sensor,0.84 V
Mass Air Flow Sensor,11 kg/h
Coolant Temperature,1.50 V
Coolant Temperature,90 °C
Intake Air Temperature,1.27 V
Intake Air Temperature,39 °C
Tank Sensor,6.90 V
Park/Neutral Switch,P - N  0V
A/C Information Switch (Air Conditioning),Inactive
A/C Load Signal (Air Conditioning),Inactive
Brake Switch 1,Inactive
Brake Switch 2,Inactive
Vehicle Speed,0 km/h
Cruise Control Tip Switch,Active
Cruise Control,Inactive
Vehicle Speed in Cruise Control Range,Inactive
EGR Valve (Exhaust-Gas Recirculation),Inactive
EGR Position Command (Exhaust- Gas Recirculation),10 %
EGR Position Feedback (Exhaust Gas Recirculation),0.76 V
Fuel Tank Ventilation Valve,3 %
Knock Control,Inactive
B1S1 O2 Sensor Heater (Bank 1 Sensor 1),Active
B1S1 O2 Sensor (Bank 1 Sensor 1),431 mV
B1S1 Air/Fuel Ratio (Bank 1 Sensor 1),Lean
B1S2 O2 Sensor Heater (Bank 1 Sensor 2),Active
B1S2 O2 Sensor (Bank 1 Sensor 2),255 mV
B1S2 Air/Fuel Ratio (Bank 1 Sensor 2),Lean
O2 Sensor Loop,Closed
B1 Short Term Fuel Trim (Bank 1),0 %
A/C Relay (Air Conditioning),Inactive
A/C Cutoff Mode (Air Conditioning),System OK
Malfunction Indicator (MI),Off
Service Vehicle Soon (SVS) Indicator,Off
Engine Speed,746 RPM
Desired Idle Speed,750 RPM
Idle Speed Offset,Inactive
Vehicle Acceleration,0.0 m/s2
Ignition Dwell Angle,2.1 ms
Injector Time,3.0 ms
Ignition Spark Angle,8.2 °CA
B1 Knock Sensor Signal (Bank 1),0.5 V
Ignition Retard Knock Control Cyl. 1,0 °CA
Ignition Retard Knock Control Cyl. 2,0 °CA
Ignition Retard Knock Control Cyl. 3,0 °CA
Ignition Retard Knock Control Cyl. 4,0 °CA
Relative Engine Load,8 %
Normal Engine Operating Temperature,Active
ETC Limp Home Mode (Electronic Throttle Control),Inactive
Electronic Throttle Control Learn Counter,0
Fuel Tank Ventilation Valve,Inactive

[mark.adams]

With MAF unplugged

Total number of fault codes: 3

P0100 - Mass Or Volume Air Flow Circuit Low Input
 (02) - Present

P0110 - Intake Air Temperature Circuit High Input
 (01) - Present

P1700 - SVS request via CAN
 (00) - Present

"My Naff Code Reader" 090714 - PC based diagnostic tool

Date and time>,10/09/2009. 19:50

Workshop information:

Marks Omega


Selected model>,2002,Omega-B,Engine,Z 22 XE

Control Unit:

Keyword #1: EF
Keyword #2: 8F
Normal timing parameter set.
systemSupplierSpecific: L       
VIN: W0L0VBM6931053222
vehicleManufacturerECUHardwareNumber 24426542 DG
systemSupplierECUHardwareNumber: SIE  0116004500
systemSupplierECUSoftwareNumber: 6586055136 
systemSupplierECUSoftwareVersionNumber: 0701
exhaustRegulationOrTypeApprovalNumber: S01003
systemNameOrEngineType:  Z22XE
RepairShopCodeOrTesterSerialNumber:  Not programmed
ProgrammingDate:  FFFFFFFF

Identifier: 1606

CalibrationDate: O109301C
CalibrationEquipmentSoftwareNumber: l2c9300a
ECUInstallationDate: 6586055204 
VehicleManufacturerSpecific: 3200

Measuring blocks information:

Battery Voltage,13.4 V
Main Relay,Active
Fuel Pump Relay,Active
APP Sensor 1 (Accelerator Pedal Position),1.00 V
APP Sensor 2 (Accelerator Pedal Position),0.49 V
Calculated Pedal Position,0 %
TP Sensor 1 (Throttle Position),0.53 V
TP Sensor 2 (Throttle Position),4.51 V
Calculated Throttle Position,4 %
Throttle Position,Idle
Engine Speed,761 RPM
Mass Air Flow Sensor,0.00 V
Mass Air Flow Sensor,0 kg/h
Coolant Temperature,1.64 V
Coolant Temperature,86 °C
Intake Air Temperature,5.00 V
Intake Air Temperature,-40 °C
Tank Sensor,7.10 V
Park/Neutral Switch,P - N  0V
A/C Information Switch (Air Conditioning),Inactive
A/C Load Signal (Air Conditioning),Inactive
Brake Switch 1,Inactive
Brake Switch 2,Inactive
Vehicle Speed,0 km/h
Cruise Control Tip Switch,Active
Cruise Control,Inactive
Vehicle Speed in Cruise Control Range,Inactive
EGR Valve (Exhaust-Gas Recirculation),Inactive
EGR Position Command (Exhaust- Gas Recirculation),10 %
EGR Position Feedback (Exhaust Gas Recirculation),0.76 V
Fuel Tank Ventilation Valve,9 %
Knock Control,Inactive
B1S1 O2 Sensor Heater (Bank 1 Sensor 1),Active
B1S1 O2 Sensor (Bank 1 Sensor 1),804 mV
B1S1 Air/Fuel Ratio (Bank 1 Sensor 1),Rich
B1S2 O2 Sensor Heater (Bank 1 Sensor 2),Active
B1S2 O2 Sensor (Bank 1 Sensor 2),255 mV
B1S2 Air/Fuel Ratio (Bank 1 Sensor 2),Lean
O2 Sensor Loop,Open
B1 Short Term Fuel Trim (Bank 1),0 %
A/C Relay (Air Conditioning),Inactive
A/C Cutoff Mode (Air Conditioning),System OK
Malfunction Indicator (MI),Off
Service Vehicle Soon (SVS) Indicator,ON
Engine Speed,761 RPM
Desired Idle Speed,750 RPM
Idle Speed Offset,Inactive
Vehicle Acceleration,0.0 m/s2
Ignition Dwell Angle,2.1 ms
Injector Time,3.0 ms
Ignition Spark Angle,5.7 °CA
B1 Knock Sensor Signal (Bank 1),0.5 V
Ignition Retard Knock Control Cyl. 1,0 °CA
Ignition Retard Knock Control Cyl. 2,0 °CA
Ignition Retard Knock Control Cyl. 3,0 °CA
Ignition Retard Knock Control Cyl. 4,0 °CA
Relative Engine Load,8 %
Normal Engine Operating Temperature,Active
ETC Limp Home Mode (Electronic Throttle Control),Inactive
Electronic Throttle Control Learn Counter,0
Fuel Tank Ventilation Valve,Active

[Kevin Wood]

OK. With the MAF connected it all looks totally normal now it's up to temperature, so back to square one. :-/

Kevin

[mark.adams]

The exhaust is still a bit smoky, could leaking piston rings be burning oil and could that cause the HC & CO readings to be way out? I saw that cylinder 4 misfire code, or am i being paranoid....

[Proz]

Hi ... can you let me know how you record your "My Naff Code Reader" details like this please 

[mathewst]

Hmm missfire in cilinder 4 should be easy to detect by the sound of the engine  :-/

[mathewst]

Ok this may sound a bit silly but how old are your spark plugs?

[mark.adams]

Spark plugs are about 6 months old, genuine GM ones. I can always change them again if need be...

[mark.adams]

My B1S2 O2 sensor reading doesn't seem to go as high as it should... Is it possible that it's faulty or maybe the Cat is duff, Any ideas on that??