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[dgainda]

i brought my Omega 2 years ago and I cannot find anyone that can regonise whats wrong with it!!! been to even 2 main dealers..they put it on the tech 2 and find nothing...had new exhaust system, fuel filter, spark plugs, ht leads, breather hose(from cam cover) camshaft sensor, timing belt, adjustor idle and gasket, new alternator,c02 sensor, exhaust manifold gasket... and STILL NO LUCK....what the hell can it be!!!!! arrrrghhhhhhh feel like smashing it in a wall....

problem = This is an intermittent problem. When ticking over revs drop to nothing then pick up. On a bad day every time I take my foot off the throttle the engine cuts out. Starts first time when restarted, but if you do not keep revving it will die again. ( intermittant throttle mostly in 1st gear no power!!!!)Help Thanks
actually please help I beg!!!!!

[Andy B]

I've no idea  but a year, model, engine type & size will probably help though.  

[Martin_1962]

Clean the idle control valve and clean out the filter on the back of the engine

[Martin_1962]

It stalls therefore it is a X20XEV

[TheBoy]

Assuming not drive-by-wire, the stalling when is likely to be Idle Control Valve. Take ot off and clean with carb cleaner, then a quick squirt of oil before refitting.

Are you saying it holds back on acceleration? Any particular rev range?

If so, check multirams, and HT stuff...

[dgainda]

Sorry my car is Vauxhall CDX 2.0l 16v s reg 96,000miles

the thing is everyone has a different solution to my prob.... are any of you mechanics and live in London and can gaurntee a fix? I have been ripped off by mechanics that say its x,y,z when its non of them! the tech 2 machine says its all clear... this must mean there is a blockage.... in the 1st gear you press excellerator full and the car just about moves... you should be able to wheel spin the car!

any body will to fix it? or know anywhere I can go? I am desperate!!! I will travel anywhere in London..iam in Greenwich

many thanks

[dgainda]

hello Martin whats a "X20XEV" what is this part? I probably have had it done

[tunnie]

Sorry my car is Vauxhall CDX 2.0l 16v s reg 96,000miles

the thing is everyone has a different solution to my prob.... are any of you mechanics and live in London and can gaurntee a fix? I have been ripped off by mechanics that say its x,y,z when its non of them! the tech 2 machine says its all clear... this must mean there is a blockage.... in the 1st gear you press excellerator full and the car just about moves... you should be able to wheel spin the car!

any body will to fix it? or know anywhere I can go? I am desperate!!! I will travel anywhere in London..iam in Greenwich

many thanks

Humm i suspect blocked breathers would not help... real problem on the 2.0's.. i just cleaned mine big improvement.

As for it stalling all the time, i too suspect the idle control valve! Take that off and give it a good clean with some carb cleaner.

If its help your after... i can be around. I am going back to uni soon at Brunel West London. I have a house in Hayes, Jc3 of the M4. You can either bring it over, or if i get some tools together pop over on the tube.

I strongly suspect idle control valve & breather problem.

[tunnie]

hello Martin whats a "X20XEV" what is this part? I probably have had it done

X20XEV is the technical name for the engine itself.

[dgainda]

hi martin i see that a "X20XEV" is an idle control valve.. i had this fitted by vauxhalls nothing changed....

the car is generally good nik

[tunnie]

hi martin i see that a "X20XEV" is an idle control valve.. i had this fitted by vauxhalls nothing changed....

the car is generally good nik

X20XEV is the engine.  [smiley=thumbsup.gif]

[nixoro]

i brought my Omega 2 years ago and I cannot find anyone that can regonise whats wrong with it!!! been to even 2 main dealers..they put it on the tech 2 and find nothing...had new exhaust system, fuel filter, spark plugs, ht leads, breather hose(from cam cover) camshaft sensor, timing belt, adjustor idle and gasket, new alternator,c02 sensor, exhaust manifold gasket... and STILL NO LUCK....what the hell can it be!!!!! arrrrghhhhhhh feel like smashing it in a wall....

problem = This is an intermittent problem. When ticking over revs drop to nothing then pick up. On a bad day every time I take my foot off the throttle the engine cuts out. Starts first time when restarted, but if you do not keep revving it will die again. ( intermittant throttle mostly in 1st gear no power!!!!)Help Thanks
actually please help I beg!!!!!

Right what I would be tempted to do is take the air intake pipe off and see if the disc in the throttlebody housing moves freely mine was sticking do this with the engine off to prevent revving, mine was doing exactly the same until I did a full throttlebody clean. You also would need to make sure the small breather pipe from the rocker cover to the throttle body is not blocked and that the small hole where the breather connects onto the throttlebody is not blocked.

Also once all this is done confirm the accellerator cable is not slack after doing all this, I no longer have stalling and the idle is spot on. Acceleration is pretty good although my breather system needs a second look, think the rear breather that runs to the oil seperator is coated in crud which doesn't help things and to top it I will be needing to change the rocker cover gasket in the very near future still not done.

Maybe also worth soaking the Idle Control Valve for a little while in carb cleaner should help better the idle.

[Markjay]

This problem can not be practically cured by paying garage money, it should be fairly cheap to sort it DIY though if you are methodological and willing to spend the time. If you don't think you are up to DIY it, or know someone who is willing to help, you may be better-off selling it on because as I said it is impractical to spend garage money on it.

On the plus side, on the 2.0L this should be fairly easy as the engine bay is large and there is easy access to most bits.

As people said here, Idle Control Valve (ICV), or breathers, of vacum pile leak, air intake manifold leak, or other problem with intake manifold moving parts... The waay forward is to take the relevant bits off and examine them.

And X20XEV is the ENGINE CODE, which identifies the engine type. If you see this code on the invoice, it means the item description is probably 'blah blah blah valve thingy blah blah for engine type X20XEV', not that the garage changed the engine over...

[Big Rod]

I'm going to nominate a leak in the induction pipework.

That would cause all the symptoms you're talking of. Unmetered air getting into the combustion chambers can cause all sorts of trouble.

Check all the plastic/rubber hoses around the throttle body for splits & bad joints then check the induction manifold for cracks/loose nuts/busted gaskets.

As a quick trial, you could take the air filter out and try running it like that. That would reduce the likelyhood of air being sucked in from elsewhere.

Hope this helps in some way.

[mr des]

ok revs dropping to zero is too lean a mix for whatever reason bad petrol, sticking egr, heavy breathing into inlet manifold, faulty throttle position sensor ie potensiometer track breaking down etc etc as for spinning wheels not in a 2l mate not unless its wet or your tyres are shagged, best off selling this one and buying a good 2.5 or 3l.