Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: prestigetravel on 08 February 2010, 11:53:06
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Since my previous post in november and some advice from a vauxhall technician i have changed my ecu and now the cars up and running. All lights out i have taken it for a run and when i pulled up at home the engine management light started flashing!!!
Have done pedal trick which has returned the following codes.
0100
0120
0220
0300
0301
0303
0305
I have read the codes sheet on the forum and gather 0100 is the maf,not a problem to change.
0120 and 0220 are throttle sensor probs, this is what vx technician told me are known for frying ecu.
the other codes relate to misfire on 3 cylinders.
Any ideas and suggestions gratly appreciated .
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Codes here:
http://www.omegaowners.com/forum/YaBB.pl?num=1220619696
Never heard of throttle sensors frying an ECU :-?
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check the plugs for any oil / water
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Cheers any idea which side of engine are cylinders 1,3 and 5
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Driver`s
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Fried ECU? Believe that when I see it!
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driver side :y
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cheers will have a look. any ideas on throttle fault?
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Fix the obvious faults first (misfire on drivers side), the others may be red herrings
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just removed all dry at plugs. As all 3 cylinders showing misfire could the coil strip pack be at fault?
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yup, coil packs are known to fail, tempted to say swap them over, and see if the fault transfers to the other bank. But not sure you can do that :-/
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Cheers just looked on ebay £65 for genuine bosch one not to bad!
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STOP.....a whole coil pack dying at once.....an ecu being fried by throttle issues.....we are into silly season here so lets get some background.
What was the original fault.
What were the codes before the ECU was changed
I say this as only the other day, I had a call from a Vx dealer asking me what could possibly be causing fumes to come from the front drivers side of a 2.2dti.....hence my confidence in thier ability is low.
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No codes. Original issues were turn ign on, no eml or immob light. car would turn over but no spark, as battery was literally flat immob light would flash and car would start. once started eml lit up and tc light and car would only rev up by 100 rpm. leave running for an hour, turn off and wouldnt start again until battery flat to point of hardly turning over. plugged in on 5 different diagnostics systems could not connect to ecu. Pedal trick didnt work either.
By putting another ecu on now starts, revs up, all dash warning lights as should be!
Must have been problem with ecu as all works ok in that respect. Tried old one one again still no good.
Old ecu going to specialist let you know diagnosis.
Just now trying to solve fault code issues in case one was responsible for ecu failure, their are several listings across sites/forums on internet relating to throttle sensor taking out ecu on omega/vectra?
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No codes. Original issues were turn ign on, no eml or immob light. car would turn over but no spark, as battery was literally flat immob light would flash and car would start. once started eml lit up and tc light and car would only rev up by 100 rpm. leave running for an hour, turn off and wouldnt start again until battery flat to point of hardly turning over. plugged in on 5 different diagnostics systems could not connect to ecu. Pedal trick didnt work either.
By putting another ecu on now starts, revs up, all dash warning lights as should be!
Must have been problem with ecu as all works ok in that respect. Tried old one one again still no good.
Old ecu going to specialist let you know diagnosis.
Just now trying to solve fault code issues in case one was responsible for ecu failure, their are several listings across sites/forums on internet relating to throttle sensor taking out ecu on omega/vectra?
Well for a start, the Vectra never had this engine fitted to it.
So, fault codes:
0100 Mass or volume air flow circuit
0120 Throttle/PedalPosition Incorrect Ratio
0220 Throttle/pedalPosition sensor/switch "B" circuit
0300 Random/multiple cylinder misfire detected
0301 Cylinder 1 Misfire Detected
0303 Cylinder 3 Misfire Detected
0305 Cylinder 5 Misfire Detected
Your issues sound a little more fundamental to me, as many know, I dont buy into the multiple things failing at once way of thinking. If I did then I would change the ecu, coil pack, throttle sensor/unit and still have the fault.
So, what do we know, well we know that the items above are both high power jobs...i.e. gobble juice.
So I would be checking engine and ecu chassis connectiosn and supply wiring first!
As for the coil pack, its 3 seperate coils with a common 12V supply......and hence why 3 failing all at the same time does not fit the bill for me.
More investigation needed before WNPC takes over (because here on OOF we are beyond that) :y
Note: WNPC = Willy Nilly Part Changing
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prestigetravel, I would advise you to trust Marks DTM Calib's advice here. I would trust him over any Vauxhall spanner monkey (sorry, Vauxhall Technician) on any Vauxhall car related problem :y
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THEIR IS A 2.6 VECTRA, THEIR ARE 7 FOR SALE ON EBAY. AND 36 ON AUTOTRADER. SAME ENGINE Y26SE, SAME ECU AS LISTED BY BOSCH. LISTED IN PARKERS AS A MODEL AS WELL.
THE THROTTLE ISSUES I HAVE READ ABOUT RELATE TO 2.2,2.6 AND 3.2 MODELS {NEWER MODELS)
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Sorry....reading 2.2...
But lets put it another way....how many 2.6 V6's (and 3.2's) come through these pages, and how many have I and others had our hands on.....
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I AM HERE TO LISTEN FOR ADVICE. I HAVE MINIMAL KNOWLEDGE OF DIAGNOSTICS SYSTEMS BUT I WAS A FULLY QUALIFIED MECHANIC FOR MANY YEARS AND STILL TINKER AND SELL CARS AS A HOBBY, CAR NOT WORKING, CHANGE ECU, CAR WORKING. SURELY ECU WAS U/S!?
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I AM HERE TO LISTEN FOR ADVICE. I HAVE MINIMAL KNOWLEDGE OF DIAGNOSTICS SYSTEMS BUT I WAS A FULLY QUALIFIED MECHANIC FOR MANY YEARS AND STILL TINKER AND SELL CARS AS A HOBBY, CAR NOT WORKING, CHANGE ECU, CAR WORKING. SURELY ECU WAS U/S!?
But car still isn't working ;)
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ENOUGH OF THAT, THE LAD I BOUGHT THE CAR OFF HAD CHANGED TH PLUGS THE PREVIOUS DAY TO CAR PACKING IN.
HAVE LOOKED TO SEE IF EVERYTHING ON PROPERLY,SEEMS OK, THE FAULT OF PLUG MISFIRE ON 1,3 AND 5, WOULD JUST 1 OF THESE PLUGS MISSING SHOW UP ALL 3 TO BE FAULTY AS CAR GOES OK, ONLY TINY VARIATION AT IDLE?
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CAR IS WORKING JUST SHOWING FAULTS
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CAR IS WORKING JUST SHOWING FAULTS
Is the car running absolutely fine? If so, the stored fault codes will disappear after a set number of good, clean starts. Or can be cleared with a code reader :y
I'm not aware of any known problems of TPS damaging ECUs. ECUs are built to be robust. Engine ECU failure on Omegas is virtually unheard of.
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Please turn the caps lock off....
As already said....just because something was changed and the behaviour changed, does not mean its the route fault.
It could be a broken wire in the loom etc and the process of changing the ECU has disturbed it and changed the behaviour.....it does not mean it will not come back.
If the ECU was faulty, the repalcement should mean you are now in a fault free condition, and you are not and hence the inference is that there is a more underlying fault and it could have been this that resulted in the ecu death.....or maybe the ecu is not part of the equation at all.
As also already said, there are 3 seperate coils in the coil pack, with a common supply. And as we already know....you dont get 3 fail all at the same time.
Plus you have codes relating to teh throttle body.
Hence the sudgestion to check the chassis and supply connections etc.
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I DROVE CAR FOR SEVERAL MILES AND IT WAS ONLY WHEN I PULLED BACK UP AT HOME THE EML CAME ON. DOES SEEM A BIT HESITANT WHEN YOU PUT YOUR FOOT DOWN COMPARED TO OTHER OMEGAS IVE HAD (THESE BEING 2.5 V6 ) SO HAVING NEVER DRIVEN A 2.6 NOT SURE ABOUT RESPONSE.
DEFINITELY DIPPING OCCASSIONALLY AT IDLE
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Please turn the caps lock off....
As already said....just because something was changed and the behaviour changed, does not mean its the route fault.
It could be a broken wire in the loom etc and the process of changing the ECU has disturbed it and changed the behaviour.....it does not mean it will not come back.
If the ECU was faulty, the repalcement should mean you are now in a fault free condition, and you are not and hence the inference is that there is a more underlying fault and it could have been this that resulted in the ecu death.....or maybe the ecu is not part of the equation at all.
As also already said, there are 3 seperate coils in the coil pack, with a common supply. And as we already know....you dont get 3 fail all at the same time.
Plus you have codes relating to teh throttle body.
Hence the sudgestion to check the chassis and supply connections etc.
Also, replacement ECU would, naturally, reset BLM values, which may be enough to allow it to run (until the BLM drift off again). Maybe a BLM reset on the old ECU would have done the same (possibly temporary?) fix.
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Please turn the caps lock off....
As already said....just because something was changed and the behaviour changed, does not mean its the route fault.
It could be a broken wire in the loom etc and the process of changing the ECU has disturbed it and changed the behaviour.....it does not mean it will not come back.
If the ECU was faulty, the repalcement should mean you are now in a fault free condition, and you are not and hence the inference is that there is a more underlying fault and it could have been this that resulted in the ecu death.....or maybe the ecu is not part of the equation at all.
As also already said, there are 3 seperate coils in the coil pack, with a common supply. And as we already know....you dont get 3 fail all at the same time.
Plus you have codes relating to teh throttle body.
Hence the sudgestion to check the chassis and supply connections etc.
Also, replacement ECU would, naturally, reset BLM values, which may be enough to allow it to run (until the BLM drift off again). Maybe a BLM reset on the old ECU would have done the same (possibly temporary?) fix.
Yes, quite possibly. Interestingly, on many of the ECU's....starting the engine with the lambda disconnected and then re-connecting it will also reset the block learn values as the ECU assumes the lambda has been replaced and hence has to re-learn.
Tried this on a few whilst checking the values with T2 and it does work.
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Please turn the caps lock off....
As already said....just because something was changed and the behaviour changed, does not mean its the route fault.
It could be a broken wire in the loom etc and the process of changing the ECU has disturbed it and changed the behaviour.....it does not mean it will not come back.
If the ECU was faulty, the repalcement should mean you are now in a fault free condition, and you are not and hence the inference is that there is a more underlying fault and it could have been this that resulted in the ecu death.....or maybe the ecu is not part of the equation at all.
As also already said, there are 3 seperate coils in the coil pack, with a common supply. And as we already know....you dont get 3 fail all at the same time.
Plus you have codes relating to teh throttle body.
Hence the sudgestion to check the chassis and supply connections etc.
Also, replacement ECU would, naturally, reset BLM values, which may be enough to allow it to run (until the BLM drift off again). Maybe a BLM reset on the old ECU would have done the same (possibly temporary?) fix.
Yes, quite possibly. Interestingly, on many of the ECU's....starting the engine with the lambda disconnected and then re-connecting it will also reset the block learn values as the ECU assumes the lambda has been replaced and hence has to re-learn.
Tried this on a few whilst checking the values with T2 and it does work.
Thats a useful bit of info that could save people a trip to a tech2 :y
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with the throttle issues they are stating switch a and switch b. i assume these to be the potentiometer switches on pedal and throttle body on plenum. are these worth changing do you think?
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with the throttle issues they are stating switch a and switch b. i assume these to be the potentiometer switches on pedal and throttle body on plenum. are these worth changing do you think?
Before replacing those, you want to do a live data check on them
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I know that I am very probably throwing a "spanner" in the works, but, looking through TIS, I came across poor starting/non starting, with a possible cause of the ground cable on the distributer being loose. Could this be a possible solution (thinking along the lines it could cause the misfires) to the issue at hand???
Just a thought from a tractor driver...
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I think more investigation is required, you dont just get multiple part failure for no reason. I would really recommend checking the basics, the connectors, the wiring etc before moving on to changing more bits.
The trouble is, if you change a part on spec, you introduce more unknowns into the system because, even if the part is new, there is no guarantee that it is fully working (if at all). Worse still, if the replacement does work, it can make the behaviour change as the ecu has to learn new values (as many of the parts have quite a wide tolerance).
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ok would a half hour at the local dealer be long enough for that? their quoting £32.50 for plug in. Everyone else at autoelectrics places around here scratch their heads when you mention tech 2, think they havnt heard of it in these hills!!! so dealer best bet unless someone on here nearish got one, im only an hour from birmingham and i have a recovery truck to bring it on.
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ok would a half hour at the local dealer be long enough for that? their quoting £32.50 for plug in. Everyone else at autoelectrics places around here scratch their heads when you mention tech 2, think they havnt heard of it in these hills!!! so dealer best bet unless someone on here nearish got one, im only an hour from birmingham and i have a recovery truck to bring it on.
Sadly, I'm another 1hr further on from Birmingham.
I really wouldn't trust anybody from Vauxhall who has previously suggested changing the ECU without good reason. I probably wouldn't trust any Vauxhall 'Technician' anyway, hence why I have bought my own Tech2!
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if you have a truck to transport it, i would spend the extra bit of time and diesel money and take it to TheBoy, he has tech2 like any dealer, but he knows how to use it :y
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Wondering if we have any other code readers on the site capable of Live Data in the Shropshire/Gloucester area?