Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: Drewomega on 22 August 2016, 10:23:56
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Morning guys,
Back from there last week.
Elite in for MOT this morning.
Yesterday I drove about 15 miles and the car went into limp mode. I noticed that the temp gauge went up slightly but nothing to worry about. Checked oil, coolant levels and everything seems to be in order. Started her up again, back to normal until a couple of miles then started to misfire again. Managed to get home by turning on the heater to keep temp down.
Plugged ELM in and there were no trouble codes indicated.
Any ideas on this guys?
TIA :y
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I suppose the obvious, standard V6 stuff - check the plugwells for oil, then check HT leads/DIS pack (or the combined things that the 2.6/3.2s have) etc. :-\
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If it went into limp (EML on), there will be a code.
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Definitely no trouble codes TB. I have a cheapo reader which does work as I have found out in the past. The car runs fine until the temp goes up then runs on 3? cylinders, turn on heater to drop the temp and she runs fine again. Also the EML light flashes for a while then stays on until the temp drops. Going for a run this morning, so will see what happens.
She passed the MOT yesterday with no advisories. :y
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Good news on MOT, but means nothing in this case.
Flashing EML on a 2.6/3.2 is emissions related, so fuel trims and/or misfires (which may or may not be same cause anyway).
Does your software allow viewing of live data (as the unit is quite generic)?, if so, check LTFT for both banks, BEFORE clearing codes (clearing codes on these resets the trims)
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Ok TB,
LTFT Bank 1-7%
LTFT Bank 2-4.7%
Still no trouble codes indicated
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Is it LPG?
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As if that's petrol, you've gotta problem. If petrol, what is the MAF reading, in kg/hr
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It's petrol TB.
The MAF is reading 3.00 g/s
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Double check my maths, that's 10.8Kg/hr?
Which would explain the trims being buggered.
If my maths is right, check for air leaks in the intake, then if no improvement, replace the MAF.
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Hi TB,
I found one of the jubilee clips on the inlet pipes was loose on the right hand side bank.
I created a trouble code and cleared using my cheapo naff reader.
I went for a run yesterday and took more readings this morning and this is the result.
Is there anything you can see that is out of kilter?
TIA :y
(http://i439.photobucket.com/albums/qq119/drooscott/Omega%20ELM2_zpsitkswage.jpg) (http://s439.photobucket.com/user/drooscott/media/Omega%20ELM2_zpsitkswage.jpg.html)
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That looks like its running VERY cool at 49C after a decent run ...... if the "true" temp is up around 90C on the gauge like it should be then possibly the temp sensor for the ECU is fubarred, but beyond that there are marked differences in fuel trims and O2 sensors between banks
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Might be the loom breaking down :-\
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Entwood! I only run the engine for a little while just to check the LTFT's, so the temp was not up to normal. It was the day before that I gave it a run after clearing the TC's. I have a new thermostat in and it works ok.
I will have to give it another run and get the ELM on it again.
So it looks like the problem still exists.
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If its petrol (LPG mapping is always a compromise), the LTFTs should always be 0.0%.
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Back again! I took her for a run last night and the same thing happened after around 15 miles, misfire while waiting at temporary traffic lights. Stopped further up the road and pulled the MAF plug off and it made no difference. Can't plug in ELM or check anything today as it is persisting down up here. :(
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Right! After my rellies have gone back to Oz I started to find out what the problem is with the Omega, and this is what I found in the 2 4 6 bank dispack. it seems like sand that is in the wells and on the plug leads. It's obviously water based. I had an issue with water ingress a while back (over a year ago) when the drain plug on that side filled with water and soaked my passenger side footwell. There is no decrease in the level of the coolant tank. See photos. Any ideas guys?
(http://i439.photobucket.com/albums/qq119/drooscott/Omega%20Plugwells_zpsrlgoagdd.jpg) (http://s439.photobucket.com/user/drooscott/media/Omega%20Plugwells_zpsrlgoagdd.jpg.html)
(http://i439.photobucket.com/albums/qq119/drooscott/Omega%20Dispack_zpsag5gd8tq.jpg) (http://s439.photobucket.com/user/drooscott/media/Omega%20Dispack_zpsag5gd8tq.jpg.html)
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Likely rainwater from scuttle
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Likely rainwater from scuttle
This.
Undo the scuttle clips and remove the foam from the bottom with a stanley knife. This alleviate virtually all of the leak issues.
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Thanks guys. Do you think the pack is fubared? and is there a way of testing? On close inspection, the base of all three plug extensions has a crack in it.
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Coil pack is more than likely fubared. Don't know how you would check though.
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Ok thanks guys! I will put up a wanted in the forsale/wanted section. :y :y