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[RossMk2]

Out of curiosity, do your throttles close completely? (or has the throttle stop screw been wound in to set the idle manually?)

No the screw is wound right out now so the car is idling (or lack of) by itself

[RossMk2]

How do people!!!!!!

After a few (200) miles i've for some more data for you. Its even after this long with O2 sensors unplugged it runs better through the rev range not really saved much on fuel i dont thing but hey! 

Erm one thing that still puzzles me is, it hasnt logged any fault codes, i noticed the EML light come on while on motorway around..... national speed limits but it didnt stop on long, went out and i have looked and nothing has been stored.

"My Naff Code Reader" 090714 - PC based diagnostic tool                        
                        
Date and time>      21/01/2010. 18:14                  
                        
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      12.8 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      0.77 V                  
Mass Air Flow Sensor      14 kg/h                  
Coolant Temperature      0.94 V                  
Coolant Temperature      93 °C            
Intake Air Temperature      3.92 V            
Intake Air Temperature      10 °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)      14 °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)      0.58 V            
Fuel Tank Ventilation Valve      0%            
O2 Sensor 1      283 mV            
O2 Sensor 2      488 mV            
O2 Sensor Loop 1      Closed            
O2 Sensor Loop 2      Open            
Air/Fuel Ratio 1      Lean            
Air/Fuel Ratio 2      Lean            
O2-Loop 1 Integrator      154 Steps            
O2-Loop 2 Integrator      154 Steps            
O2-Loop 1 BLM Idle (Block Learn Map)      154 Steps            
O2-Loop 2 BLM Idle (Block Learn Map)      132 Steps            
O2-Loop 1 BLM Partial Load (Block Learn Map)      154 Steps            
O2-Loop 2 BLM Partial Load(Block Learn Map)      154 Steps            
Hall Sensor      Active            
Engine Speed Pulse      Inactive            
Engine Speed      693 RPM            
Idle Air Control      20 Steps            
IAC Integrator (Idle Air Control)      179 Steps            
IAC Adaptation Slope (Idle Air Control)      200 Steps            
IAC Block Learn (Idle Air Control)      136 Steps            
Desired Idle Air      43 kg/h            
Actual Value Idle Air      12 kg/h            
Desired Engine Idle Speed      750 RPM            
Injection Pulse      4.3 ms            
Engine Load Signal      1.2 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            


Whats still really bugging me and starting to cause a problem is it not being able to idle when cold, when warm it can sit at 750rpm as it should but can vary between 650-750 but i have the grub screw on throttle bodies right out, i dont know if its wise to wind it in to the limit as to where "My Naff Code Reader"'s output states it no longer at idle?

[Andy H]

Do you believe that the IAC is working? It seems to me that it is stuck slightly open (so engine idles when warm but not when cold).

I recall you writing that you hadn't disconnected the IAC or EGR but I am still wondering whether the plugs might have got swapped. :-/

[RossMk2]

I am 99% sure they have not been switched, if they had been surely the readings for 'EGR' which isnt active would think that it is?

I've tried 2 different IAV's since i changed the original one that i thought WAS at fault and both have been the same, i cant see two ICV's being FUBAR. These dont noticably fast idle should they, do everyones here when first started noticably fast idle when started?

Edit: Cant see how the two could get mixed up..... they are completely different plugs from a quick scan this morning

[RossMk2]

Other than the idle problem, what do we think about the O2 sensors now? Like i said with them unplugged the car has run better for longer but has never showed up a fault code. Where do we go from here?

[Kevin Wood]

Other than the idle problem, what do we think about the O2 sensors now? Like i said with them unplugged the car has run better for longer but has never showed up a fault code. Where do we go from here?

Well, I'd plug them back in now you've tried it without them. If it is run about without the sensors heated long term it will do them no good.

I am leaning towards suspecting the o2 sensors - or something making them read inaccurately. :-/

Would be nice to see the car and get a Tech 2 on it, though.

Kevin

[RossMk2]

Well, I'd plug them back in now you've tried it without them. If it is run about without the sensors heated long term it will do them no good.

I am leaning towards suspecting the o2 sensors - or something making them read inaccurately. :-/

Would be nice to see the car and get a Tech 2 on it, though.

Kevin

If someone localish with Tech2 has some time i would gladly bring it to them/you.

Just seems weird that no fault codes were stored surely thats not normal.

[RossMk2]

Hello me....... again!

Morning people how are we all?

Well i dug out my old ICV one that can stick from time to time and what do you know.... it idles when cold!!!! I cant see as 2 ICV (descibed as working when posted) would be at fault and when i stick on an item i know can stick sometimes when decelerating works fine, crazy! have not had "My Naff Code Reader" back on the case as yet but plugged O2 sensors back in also and car is fine so far.