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[Ghost]

It sound like the cold start is staying on ( choke open)
Have you changed the plugs and air filter?
is the air passage blocked somewhere ie from filter on to engine?

[Ghost]

Just read this link not to sure but very similar to your prob.
is your exhaust ok? not blowing anywhere doesnt matter how small.
have a read it might help
http://www.omegaowners.com/forum/YaBB.pl?num=1251054939/15

[mark.adams]

Thank you, i saw that thread earlier, the exhaust was replaced before all this began.
Here's a revelation, i took the air filter out and the B1S1 value that was all over the place has settled down, could that be it???

[Ghost]

You can only try it :-/

[Marks DTM Calib]

Mark.....whats the temp reading from the engine ECU?

Lets diag this properly rather than taking (mechanic like) stabs!)

[Jimbob]

you can save all the readings to a file with 1 click in "My Naff Code Reader".....how about posting that up 

[mark.adams]

you can save all the readings to a file with 1 click in "My Naff Code Reader".....how about posting that up 

Just looked at that, the record button is greyed out. i could save the fault codes, but there aren't any...

[Jimbob]

you should be able to save live data to file....pm sent

[mark.adams]

Mark.....whats the temp reading from the engine ECU?

Lets diag this properly rather than taking (mechanic like) stabs!)

Ok outside temp from dash 22 degrees.
coolant temp from gauge 90 degrees
coolant temp from ecu 96 degrees cooling fan on
B1S1 heater active, ratio lean around 600mv
B1S2 heater active, ratio lean 392mv

[Kevin Wood]

If you can save ALL the live data it might help. Coolant temp. looks to be reasonable there so I guess we need to look further afield.

Kevin

[mark.adams]

What is the consensus of opinion regarding the possibility that O2 sensor 2 is duff...
Would that give me the symptoms i am seeing?

[mark.adams]

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

Date and time>,08/09/2009. 17:21

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,13.7 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),0.61 V
TP Sensor 2 (Throttle Position),4.43 V
Calculated Throttle Position,6 %
Throttle Position,Idle
Engine Speed,820 RPM
Mass Air Flow Sensor,1.00 V
Mass Air Flow Sensor,17 kg/h
Coolant Temperature,2.92 V
Coolant Temperature,54 °C
Intake Air Temperature,1.69 V
Intake Air Temperature,27 °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,3 %
Knock Control,Inactive
B1S1 O2 Sensor Heater (Bank 1 Sensor 1),Active
B1S1 O2 Sensor (Bank 1 Sensor 1),745 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),412 mV
B1S2 Air/Fuel Ratio (Bank 1 Sensor 2),Lean
O2 Sensor Loop,Closed
B1 Short Term Fuel Trim (Bank 1),3 %
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,820 RPM
Desired Idle Speed,800 RPM
Idle Speed Offset,Inactive
Vehicle Acceleration,0.0 m/s2
Ignition Dwell Angle,2.1 ms
Injector Time,4.2 ms
Ignition Spark Angle,2.7 °CA
B1 Knock Sensor Signal (Bank 1),0.4 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,Inactive
ETC Limp Home Mode (Electronic Throttle Control),Inactive
Electronic Throttle Control Learn Counter,0
Fuel Tank Ventilation Valve,Inactive

[mark.adams]

Anybody got any ideas on this??
Lambda 1 changed, air filter removed (temporarily)
still runs rich

[Kevin Wood]

Coolant Temperature,54 °C

Looks a bit low. Was it fully warmed up (fans cutting in)? If not, it's very hard to draw any conclusions from the rest of the data, TBH.

Mass Air Flow Sensor,17 kg/h

That doesn't look right. I'd expect around 10kg/h for a 2.2 at idle.

Injector Time,4.2 ms

Looks high for a hot engine idling too. 3 - 3.5 ms more typical.

B1S1 O2 Sensor Heater (Bank 1 Sensor 1),Active
B1S1 O2 Sensor (Bank 1 Sensor 1),745 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),412 mV
B1S2 Air/Fuel Ratio (Bank 1 Sensor 2),Lean
O2 Sensor Loop,Closed
B1 Short Term Fuel Trim (Bank 1),3 %

Don't see how it can be closed loop with only 3% fuel trim when running that rich. Is the O2 sensor 1 bank 1 voltage switching up and down or just stable?

If that engine was fully warmed up I'd say the coolant temperature sensor might be faulty, although that was proved OK in the previous results.

If not, I'd say the MAF is reading high, and causing it to run rich (what happens to emissions and / or live data and running if you disconnect the MAF completely?).

Can't explain why it reports closed loop running and a sensible fuel trim though. :-/

Kevin

[mark.adams]

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...