Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: P6UL K on 10 May 2014, 23:10:20
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Evening guys,
Have replaced the coilpacks with brand new Bosch items and the misfire still remains! Very infuriating! Will check the codes in the morning via the pedal
But could there be something else causing this?
CPS? Cam sensor?
Seems to happen under load rather than light acceleration.
*Edit...
Just had recent mini-service using new Vx oil/filter/plugs etc...
Plugs holes were free of oil and water, bone dry in fact!
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Unplug maf?
Plugs OK?
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Unplug maf?
Plugs OK?
Just edited! But not tried MAF yet
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See what pedal trick says.
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Two words...
Engine Loom.
That was the only thing that cured mine. If you can get one, a low mileage 2.6 manual loom is your best bet :y
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Done the pedal test and I'm getting P1111...
P1111 Intake Manifold Valve 2 Voltage High
P1111 Intake Manifold Valve 2 Voltage Low
P1111 Intake Manifold Valve 2 Open
Now, what can that mean? Double Dutch to me :-[
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Means there's a multi ram not working. Guessing plug is off at the back of the plenum.
Although I'm not sure which is 1 and which is 2...?
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Cheers Chris, cant be that then as the issue has been going for a while long since the dual ram removal.... Took the car for a good run and it disappeared but my luck was short lived as once the car got to hot it returned and made the car pop and bang!
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Ahh joining the chav's now with the pops and bangs ;D ;D
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Not through choice! ???
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And its......... FIXED!!
Place your guesses here, you'll never get it!!
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Chewed plug, ballast resistor or cooked loom... :-\
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You couldn't be any further from the truth! Just goes to show that the vacuum system and any/all the mods I've done have no effect on the engine running :P :-X :D ;D
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Not one of the suggestions had sfa to do with vacuum or mods ???
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Loose wire/poor connector to coilpack?
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Oh, go on, tell us. We give up.
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Lead left loose on top of a plug?
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Have I missed it??? :-\
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Faulty dis pack.....broken down lead....plug loose....loose connector.....I could go on but I can't be bothered so just tell us already ;D ;D ;D ;D
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Come on then! ::) ::)
We are all waiting...................don't go quiet now. Just tell us! ;D ;D ;D ;D ;D ;) ;)
The excitement is killing me :D :D :D :D
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Come on Paul...fess up :-X you little teaser you. Our Kent agent, The Alarming man will be paying you a visit with the electrodes for your scrotal area to persuade you, and you don't really want that..do you? :o :o
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Come on Paul...fess up :-X you little teaser you. Our Kent agent, The Alarming man will be paying you a visit with the electrodes for your scrotal area to persuade you, and you don't really want that..do you? :o :o
.........or worse still I'll pay you a visit and make you an offer you can't refuse!
Be afraid, very afraid!
;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;) ;)
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Looks like a visit from Miss Zoom is imminent Paul...I suggest you come out with your hands in the air ::) :)
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That code would imply rear multiram not plugged in, shagged, or loom shagged.
Hard to tell which, as looks like you've use a shit code reader ;D
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That code would imply rear multiram not plugged in, shagged, or loom shagged.
Hard to tell which, as looks like you've use a shit code reader ;D
Don't think so. I bought a 2.5 that was 'flat on pick up', but otherwise fine, and I eventually traced it to rear dual ram always open, its default setting. Cure was to change the vacuum reservoir. It never misfired though, gave full power when required, idled cleanly, and had no other symptons.
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Calling P6UL K......come in P6UL K where are you P6UL K ??.........getting boring now!! :)
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Hello! Finally got the laptop fired up!! Sorry for keeping you all hanging on :D
Well after all the its this, its that, try this, try that it turned out to be......
A STONE!!!! About 3-5mm in size!! :o >:( :o :-(
Basically said stone had found its way into the fuel tank, sat in the swirl pot in the tank directly under the pump. When the car was idling or pootling around it was fine as the pump was drawing enough fuel to pick the stone up and cause any issues BUT when i drove at my normal 'Ar$e is on fire' manner the fuel pump was under more load creating more suction and drawing the stone up into the pump and blocking the impeller?
When the garage found the problem there was a massive amount of swarf sitting directly below the pump and the pump itself was buggered! The stone had chewed up the insides of the pump and really was having serious issues trying to draw fuel up, so a new pump, filter and the tank removed, drained and cleaned out and now all is good!! Well chuffed!! But the downside was the agro with 3 different garages in the first place, various costs with the intial 2 garages, being fobbed off by the Main Stealer (And them busting my BNIB manual gearstick I'd recently just fitted) and then the final bill!! Inc the culprit of Mr Stone....
(http://img.photobucket.com/albums/0603/billycabrio/Vauxhall%20Omega%20Estate%20V6/EDF328F9-4ABF-4E69-B7AE-22CF8664CD23_zpsqlww2h75.jpg)
So, Omegatron is BACK to her happy old self! 8) :y 8) :y 8) :y 8) :y 8) :y 8) :y
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heck and double heck.
You can now rest easy as you have a new Omega under you.
:y
This saga reminds me of my dads Escort mk1 that had overheating. Under warranty it had loads of new parts. still didn't cure intermittent overheating. Eventually after a saga about half as long as yours a bolt was found in the cylinder head (from new) that occasional blocked off a waterway.
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Well, I am surprised! I have had fuel feed problems, tired pumps, blocked filters or kinked pipes, but they resulted in clean idling, initial clean pulling under power, then sudden engine cut out as poor thing runs out of fuel. They never caused misfiring.
Anyway, I am glad it's cured. Well done! You certainly had us going there.
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I am puzzled, too. The fuel circulates, so the pump output is constant, it maintains a pressure in the injector rail controlled by a pressure control valve, returning the excess fuel to the tank. If the pump output is insufficient to meet consumption, pressure in the injector rail falls and the engine cuts out. I have experienced that, it is not uncommon. A car I bought last year behaved thus, my standard new e-bay car road test includes a sustained full power section which exposed it. Turned out to be some monkey had made a mess of a fuel filter change, added hoses and clips, and kinked a hose.
If I see no obvious cause I next check fuel pump output, should be about a pint a minute. If less pump is knackered.
At least it is cured now. I have known cars scrapped because no-one could cure faults.
Another mystery is how that stone got into the tank. Have you got the stone?
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Well, that's a new one on me too. Very bizarre fault! Well done for sticking with it until it's found.
I agree with Terry that the fuel pump pumps at a constant rate unrelated to engine load. What I think was happening is that damage to the fuel pump, or the restriction of the stone partially blocking its' inlet, had cause its' flow rate to drop such that, as soon as the engine was under load, it couldn't keep the fuel pressure up.
Either way, it's fixed... :y
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Cheers Chris, cant be that then as the issue has been going for a while long since the dual ram removal.... Took the car for a good run and it disappeared but my luck was short lived as once the car got to hot it returned and made the car pop and bang!
Dual ram removal? I did not understand this, it's fundamental to the engine design. Please expand.
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Cheers Chris, cant be that then as the issue has been going for a while long since the dual ram removal.... Took the car for a good run and it disappeared but my luck was short lived as once the car got to hot it returned and made the car pop and bang!
Dual ram removal? I did not understand this, it's fundamental to the engine design. Please expand.
Terry - Said stone is in the picture below the total cost... And I have no dual ram... It went long ago since replacing with a Mantzel Airbox 8)
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Well, that's a new one on me too. Very bizarre fault! Well done for sticking with it until it's found.
I agree with Terry that the fuel pump pumps at a constant rate unrelated to engine load. What I think was happening is that damage to the fuel pump, or the restriction of the stone partially blocking its' inlet, had cause its' flow rate to drop such that, as soon as the engine was under load, it couldn't keep the fuel pressure up.
Either way, it's fixed... :y
Thanks Kevin, I was determined to get to the end of this issue! Thankfully it wasn't as complicated as the issues I was having with the diesel hearse... Which is now long gone!
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These omens keep you on your toes don't they ::)
Well done for your persistence though , one to note :y
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... Thankfully it wasn't as complicated as the issues I was having with the diesel hearse...
You know where you are with a proper engine. ;)