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[Doctor Gollum]

It is an Omega.

They gave definitely been undone before


If nothing else it should have had four or five cambelt changes on time alone

[Migalot]

If nothing else it should have had four or five cambelt changes on time alone

It has. Last one done by James. 

[LC0112G]

Ok - I'll revise to...

It is an Omega.

They have definitely been weakened before and are probably ready to snap

[polilara]

Any other running issues?

What fuel are you currently using?

Last plug and air filter change?

No other issues.
97 Premium
June 22 (by James V6 CDX). Included new fuel filter.

 

Can your Bluetooth scanny jobbie look at live data? If so can you post all the fuel trim values - especially long term fuel trim (LTFT)

This, but 'Short Term Fuel Trim' I think. I had something very similar in my Y26SE. Lambda 1 was "Lazy" and caused frozen short term trim. See below. I did not do anything. It dissappeared within about two weeks, afterwards thought that perhaps carbon residuals etc. dirt in sensor which then went away???
https://www.omegaowners.com/forum/index.php?topic=149556.0

[Migalot]

Any other running issues?

What fuel are you currently using?

Last plug and air filter change?

No other issues.
97 Premium
June 22 (by James V6 CDX). Included new fuel filter.

 

Can your Bluetooth scanny jobbie look at live data? If so can you post all the fuel trim values - especially long term fuel trim (LTFT)

This, but 'Short Term Fuel Trim' I think. I had something very similar in my Y26SE. Lambda 1 was "Lazy" and caused frozen short term trim. See below. I did not do anything. It dissappeared within about two weeks, afterwards thought that perhaps carbon residuals etc. dirt in sensor which then went away???
https://www.omegaowners.com/forum/index.php?topic=149556.0

Thanks, I read that link. If you look at the live data I posted earlier in this thread, the Short Term Fuel Trim seems stable at 2%. Since clearing the codes, the light has not come back so maybe, as in your case, it may stay that way!

[Doctor Gollum]

Could have been some crappy fuel passing through.

The light doesn't automatically mean that something is broken, occasionally it is meant to be on

[Migalot]

Could have been some crappy fuel passing through.

The light doesn't automatically mean that something is broken, occasionally it is meant to be on

 

[polilara]

Any other running issues?

What fuel are you currently using?

Last plug and air filter change?

No other issues.
97 Premium
June 22 (by James V6 CDX). Included new fuel filter.

 

Can your Bluetooth scanny jobbie look at live data? If so can you post all the fuel trim values - especially long term fuel trim (LTFT)

This, but 'Short Term Fuel Trim' I think. I had something very similar in my Y26SE. Lambda 1 was "Lazy" and caused frozen short term trim. See below. I did not do anything. It dissappeared within about two weeks, afterwards thought that perhaps carbon residuals etc. dirt in sensor which then went away???
https://www.omegaowners.com/forum/index.php?topic=149556.0

Thanks, I read that link. If you look at the live data I posted earlier in this thread, the Short Term Fuel Trim seems stable at 2%. Since clearing the codes, the light has not come back so maybe, as in your case, it may stay that way!

OK, good to hear that all is working perfectly now, hope that it continues; I saw that table data. However, never seen stable sensors' No 1 & Short Term Trims data not jumping up and down in my Y26SE. What I see is in your table is stable 2% in both Short Term cells or did you present some curves which I cannot see.

[Migalot]

OK, good to hear that all is working perfectly now, hope that it continues; I saw that table data. However, never seen stable sensors' No 1 & Short Term Trims data not jumping up and down in my Y26SE. What I see is in your table is stable 2% in both Short Term cells or did you present some curves which I cannot see.

My code reader does not output graphs, but the Short-Term stayed at 2% while I was running the engine.

[Migalot]

Took the car down to Somerset and back today. Trip down was nearly 3 hours (M25 traffic!) and she behaved beautifully. While down there, SWMBO wanted to go to Shepton Mallet. No sooner than we set off and the warning light appeared again. Drove there and back to Bruton. Before driving back to London, I popped the reader in and cleared the codes (same as before). We then drove back on about 2.5 hours and she purred magnificently, with no warning light.
Most odd, but I can live with it. My OBD gizmo has a permanent place in my centre console now. 

[cam.in.head]

possibly worth swapping the 2 front sensors over if theyle undo. just to see if it comes back again as the same sensor

[Migalot]

possibly worth swapping the 2 front sensors over if theyle undo. just to see if it comes back again as the same sensor

Maybe when the weather improves! 

[cam.in.head]

then at least if the fault swaps with the sensor you know its that.
but i know what you mean for now its not exactly playing out weather and thats me talking. im usually doing something to my fleet but not until it warms a bit !

[Migalot]

Cleared the codes again yesterday and all was well again. Today, I started her up and the light fails to go out again.

Re-read the codes. Slightly different this time:

P0155-04
O2 Sensor Heater Circuit Open (Bank 2 Sensor 1)
P0155-08
O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
P0150-04
O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)

The mystery continues...

[cam.in.head]

sounds like swapping them over would definately prove in this case. but like you say ,weather a bit crappy for playing !