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[feeutfo]

Getting slow or no response code and it's upsetting the LPG. Software shows it out of time with the other bank.

Where is best place to get one? GM or pattern.... Must be new, not worth messing about. That's if the old one comes out at all of course. 

[Jimbob]

I guess you could just fit a new boss like when relocating Lamda's if needs be  :-/

[Jimbob]

dunno on your TC access..so heres the current range..

Omega ('94-'03)
Lambda Sensors
Application       Description       Part No.       Retail       Trade       Trade Club       Wish List
2.0i 16v Turbo - X20XEV       (Ch.>) R1000001; (>Ch.) T1066218       90509276       £133.00       £120.33       £100.79       
2.0i 16v Turbo - X20XEV       360mm; (Ch.>) T1066219       90528640       £133.00       £120.33       £100.79       
2.0i 8v - X20SE       Bosch       90509274       £133.00       £120.33       £100.79       
2.2i 16v - Y22XE       Position 1; With Manual transmission; 770mm       9202575       £77.50       £69.75       £62.32       
2.2i 16v - Y22XE       With Automatic Transmission; 620mm       9202576       £116.00       £104.40       £88.10       
2.2i 16v - Z22XE       Position 1; With Manual transmission; 770mm       9202575       £77.50       £69.75       £62.32       
2.2i 16v - Z22XE       With Automatic Transmission; 620mm       9202576       £116.00       £104.40       £88.10       
2.5i 24v V6 - X25XE       With Automatic Transmission; Bosch       90509274       £133.00       £120.33       £100.79       
2.6i 24v - Y26SE       Position 1; With Automatic Transmission       9195606       £108.00       £97.32       £81.72       
2.6i 24v - Y26SE       Position 1; With Manual Transmission       9199470       £100.00       £90.00       £75.35       
2.6i 24v - Y26SE       Position 2; With Manual Transmission; (>Ch.) 21059096       9199470       £100.00       £90.00       £75.35       
3.0i 24v V6 - X30XE       With Automatic Transmission; Bosch       90509274       £133.00       £120.33       £100.79       
3.2i 24v V6 - Y32SE       Position 1; With Automatic Transmission       9195606       £108.00       £97.32       £81.72       
3.2i 24v V6 - Y32SE       Position 1; With Manual Transmission

[Kevin Wood]

Not down to the LPG calibration being problematic, is it?

I would try and resolve the LPG sending the fuel trims out before condemning the lambda sensor. :-/

[feeutfo]

Not down to the LPG calibration being problematic, is it?

I would try and resolve the LPG sending the fuel trims out before condemning the lambda sensor. :-/

No, something is upsetting the fueling on bank 2. Petrol injector times are plus 1.5 on average iirc Fitted another coil PAC as there was a misfiring issue, it's used but instantly ticks over smoother once fitted.

Recalibration then showed bank 2 lambda out of time with bank one. It's intermittent, but clearly there. Probably causing the intermittent hunting I would think....?

[feeutfo]

Sorry, should add, I swapped the injector blocks. Then swapped the fuel feed pipes from post filters to injector blocks. No change to bank 2 injector times. Discussions with Tilo and others suggest that rules out the kit. It's something on the car.

[Lazydocker]

Not down to the LPG calibration being problematic, is it?

I would try and resolve the LPG sending the fuel trims out before condemning the lambda sensor. :-/

No, something is upsetting the fueling on bank 2. Petrol injector times are plus 1.5 on average iirc Fitted another coil PAC as there was a misfiring issue, it's used but instantly ticks over smoother once fitted.

Recalibration then showed bank 2 lambda out of time with bank one. It's intermittent, but clearly there. Probably causing the intermittent hunting I would think....?

After a bit of head scratching it does point to that sensor. Kev, it looks like the lambda sensor is what's upsetting the LPG fuelling. Under wot it's not going fully open loop... One bank is, the other keeps having a "moment" and dropping down briefly... No real signs of leaning out and does it on petrol as well.

[feeutfo]

dunno on your TC access..so heres the current range..

Omega ('94-'03)
Lambda Sensors
Application       Description       Part No.       Retail       Trade       Trade Club       Wish List
2.0i 16v Turbo - X20XEV       (Ch.>) R1000001; (>Ch.) T1066218       90509276       £133.00       £120.33       £100.79       
2.0i 16v Turbo - X20XEV       360mm; (Ch.>) T1066219       90528640       £133.00       £120.33       £100.79       
2.0i 8v - X20SE       Bosch       90509274       £133.00       £120.33       £100.79       
2.2i 16v - Y22XE       Position 1; With Manual transmission; 770mm       9202575       £77.50       £69.75       £62.32       
2.2i 16v - Y22XE       With Automatic Transmission; 620mm       9202576       £116.00       £104.40       £88.10       
2.2i 16v - Z22XE       Position 1; With Manual transmission; 770mm       9202575       £77.50       £69.75       £62.32       
2.2i 16v - Z22XE       With Automatic Transmission; 620mm       9202576       £116.00       £104.40       £88.10       
2.5i 24v V6 - X25XE       With Automatic Transmission; Bosch       90509274       £133.00       £120.33       £100.79       
2.6i 24v - Y26SE       Position 1; With Automatic Transmission       9195606       £108.00       £97.32       £81.72       
2.6i 24v - Y26SE       Position 1; With Manual Transmission       9199470       £100.00       £90.00       £75.35       
2.6i 24v - Y26SE       Position 2; With Manual Transmission; (>Ch.) 21059096       9199470       £100.00       £90.00       £75.35       
3.0i 24v V6 - X30XE       With Automatic Transmission; Bosch       90509274       £133.00       £120.33       £100.79       
3.2i 24v V6 - Y32SE       Position 1; With Automatic Transmission       9195606       £108.00       £97.32       £81.72       
3.2i 24v V6 - Y32SE       Position 1; With Manual Transmission

Thanks Jimbob.

I have tc access. But 3.2 auto still seems steep. I guess a factors?

[Kevin Wood]

Not down to the LPG calibration being problematic, is it?

I would try and resolve the LPG sending the fuel trims out before condemning the lambda sensor. :-/

No, something is upsetting the fueling on bank 2. Petrol injector times are plus 1.5 on average iirc Fitted another coil PAC as there was a misfiring issue, it's used but instantly ticks over smoother once fitted.

Recalibration then showed bank 2 lambda out of time with bank one. It's intermittent, but clearly there. Probably causing the intermittent hunting I would think....?

Hmm. That's odd because I remember the fuel trims being within a percent or so on petrol before it was converted. I remember it because it was unusually good. :-/

Then again, maybe a coil pack issue has contaminated the sensor.

Worth disconnecting the lambda sensor feeds to the LPG ECU first just in case that's influencing it?

Oh, and remember that we wound on a load of correction on that LPG bank, thinking it was the LPG injectors...

[feeutfo]

Fuel trims do return to normal on petrol.

It appears to be using more LPG than usual as I ran out earlier than expected and had to use petrol for about 20 miles. Filled up with LPG then a further 2 or 3 miles to destination where it was tech2'd only to show a 3% fuel trim error. 24% is not uncommon on that bank. Cp was changed later.

It would appear just the good side of marginal on petrol, perhaps....?

[TheBoy]

Its still trimming up too much IMHO.  But that B2S1 did seem a bit lazy after a period of idling, switching back properly after a period of caning it.

IMHO, these never evaps are a PITA to get the LPG set up on, but worth the effort.

I seem to recall this car didn't return long term trims back to 0% on petrol, which is a tad unusual IME.

My own gut reaction - proper diagnosis isn't available the day after a beer festival on a hot day - is something is throwing the petrol ECU off slightly, and this is getting amplified by the LPG.  Trims last seen at 13% (B1) and 24% (B2).

[Kevin Wood]

Sounds like we need to go back to basics. Reset block learning, give it a thorough check out on petrol and take it from there.

[Lazydocker]

Sounds like we need to go back to basics. Reset block learning, give it a thorough check out on petrol and take it from there.

Hmm... Suppose we could just disconnect that bank lambda signal to see what happens :-/ As above... A beer festival on a hot day did impose on a full day fault finding the following day

My gut feeling is that the sensor is tired and messing with the trims too much

[TheBoy]

Ifg it helps, after a BLM reset, or a code clear (which resets BLMs on DBW), my Elite's long term trims will remain at 0%. Be it miss daisy, or ragged.

Kevin Wood is the Lamda anorak expert, maybe he could glance over it if he has a free couple of hours?

[JamesV6CDX]

Ifg it helps, after a BLM reset, or a code clear (which resets BLMs on DBW)

does this apply when clearing with machines other than tech2, eg "My Naff Code Reader"?