Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: tigers_gonads on 03 April 2017, 12:55:42
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Went for a drive yesterday to blow the cobwebs off the car :-X :D
Coming back, I got myself stuck in pretty slow moving traffic :(
While slowly moving along, the EML light came on and stayed on. In itself, the car was running smooth with a nice idle.
The car started first time this morning and run great with no EML lights but I did pull off these codes .........
P0150 - (F) 02 Sensor Circuit Slow response (Bank 2 Sensor 1) Present
P0150 - (7) 02 Sensor Circuit slow response (Bank 2 Sensor 1) Intermittent
After todays drive, I could not replicate the fault :-\
Are we looking at a straight sensor replacement or something else since I could not get the fault to return ?
The car was running on LPG at the time.
I didn't get time to check the live data but I will look later if I get chance :)
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If running on LPG then it hints more towards the LPG side.
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If running on LPG then it hints more towards the LPG side.
Ah 'dangle berries' ::)
I've not checked the lpg map since I was at yours a few weeks ago :-\
I'll check later and report back :)
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Compare lamda response on petrol and gas. I suspect the map is out on LPG side.
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Off out in it later
I will check then :y
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Right, finally got around to this ::)
Took it for a run to get it nice and hot, plugged it in and powered up the software.
Gas pressure @ 95 degree's / idle was 1.2 bar so maybe a little high :-\
I will tweek it down closer to 1.1 bar when I get chance / find my pigging 4mm allen key socket >:(
The Petrol / gas map was a good 5mm out right at the bottom of the revs scale. (LPG rich)
This has been tweeked down and the lpg map display deleted so I'll see what it shows up like after a good drive when I get chance.
The rest of the map was pretty much perfect.
I did notice that the No2 lambda sensor seemed to be slower / not switching through the full 0 - 1 volt range at idle.
It might be down to the map been out though so i'll check this again when I get chance.
Cheers :-*
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It came back on the run home from skeg vegas this Sunday afternoon :(
Same codes.
Same driving style too. Light throttle / high gear :(
I'll check the gas map when I get chance be I would be surprised if its out by much if at all :-\
I know the engine ecu coolant temp sensor is starting to play up and needs changing.
Could this affect things ?
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Yes, might do. If the coolant temperature is reading wrong, the ECU might expect the lambda sensors to wake up quicker than in reality.
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Yes, might do. If the coolant temperature is reading wrong, the ECU might expect the lambda sensors to wake up quicker than in reality.
Cheers Kev
Mark noticed it on the last tech 2 session.
Revs all over the place between "once it starts to warm up" until "nice and hot".
Changed the MAF but made little difference.
No air leaks apparent.
Okay, about time I did the breathers so best get on with it ::)
Best place / price for a V6 ecu temp sensor please ?
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The temp sensors rarely fail so I'd go for a 2nd hand one, personally.
This is assuming it's actually the sensor. Would be worth checking the resistance of the wiring back to the ECU first, and possibly checking the resistance of the sensor at various temperatures.
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If you're talking about the sensor that lives on the coolant bridge alongside the sender unit for the dashboard display then they run from just under £7 up into the mid £20's.
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Seconded, and easy enough to fit with plenum off for breather cleaning :y
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The temp sensors rarely fail so I'd go for a 2nd hand one, personally.
This is assuming it's actually the sensor. Would be worth checking the resistance of the wiring back to the ECU first, and possibly checking the resistance of the sensor at various temperatures.
From memory, there are 2 sensors screwed into the coolant bridge.
One has the wire attached via a crimp that slides on, the other iirc has a plug :-\
Anyone remember which one is which ?
I should have a old coolant bridge off a 3ltr in the shed somewhere :-\
Same one ??
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If you're talking about the sensor that lives on the coolant bridge alongside the sender unit for the dashboard display then they run from just under £7 up into the mid £20's.
Thanks bud :)
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Seconded, and easy enough to fit with plenum off for breather cleaning :y
That's the cunning plan ;D
I'll check that gearbox plug while I'm under there too :-X :-[
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the one with the single wire / spade is for the dashboard guage only. the other is for the injection system
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Ecu one indeed has a plug ;)
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Firstly, a quick update on my absence ::)
Not been around for a while due to crazy work commitments / never at home so not really had much of a chance to look into this lot :(
The long and short is ........... I've been home for a few days so i've been enthusiastically rubbing the rust off the brake discs on the omega with the pads :-X :D
Other then one window deciding to take a turn at pissing me off (see other post), the car last Sunday threw up the same codes as before on the same drive home :(
Tbh, I was going to stick it on the back burner AGAIN then this morning, the EML did it little dance and this little lot appeared >:(
Same 150 codes as before (probably caused by that same stretch of road :-\ but now, i've got this lot >:(
P0300 (8 ) Random / multiple misfire detected
P0302 (8 ) Cylinder 2 misfire - Not detected
P0304 (8 ) -----"----- 4
p0306 (8 ) -----"----- 6
p0201 (2) Cylinder 1 injector circuit low - Not present
p0202 (2) Cylinder 2 --------------"--------------
p0203 (2) Cylinder 3 --------------"--------------
p0204 (2) Cylinder 4 --------------"----------------
All running of LPG but this time the coolant would have been still quite cold.
One the EML dance finished, the car run with no problems.
Needless to say this is starting to really pish me off and to cap it off, i'm back on the road on road this Saturday night for another 11 nights away in a row SO if you lads of superior technical knowhow can give us a few pointers on this before I foxtrot Oscar, it would be appreciated :)
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246 coil pack... Remove the scuttle foam and reset... Check cp for condition/oil/water.
Injectors... Plug is next to 246 cp... Check for water ingress, especially if the LPG connections are on a modified injector loom rather than piggybacking ;)
Next?
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246 coil pack... Remove the scuttle foam and reset... Check cp for condition/oil/water.
Injectors... Plug is next to 246 cp... Check for water ingress, especially if the LPG connections are on a modified injector loom rather than piggybacking ;)
Next?
::) ;D
Will do :y
Thanks Al :)