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[Andy B]

Right then SWMBO phoned me on her way home from work to tell me her EML was on - had been flashing but now constant. It's the lamp with the engine symbol.
When she'd driven the few miles home I thought about connecting my Cheapo Tech II, but that meant going across town to get my Dad's laptop, then I remembered about the 'pedal trick' so ..... it flashed 10 ... 3 ... 10 ... 2 which I know is 0302 and means  ... apparently  :-/ a mis-fire on number 2 pot. (I thought the fault flashed up on the engine light however it flashed up on the engine + spanner light :-?)
It's cold & I really don't want to be under the bonnet at the moment but has anyone had a similar fault with their 4 pot DBW Omega & fixed it with other than a new coil pack?

I even taught 'my expert' a new trick -- he'd never heard of the 'pedal trick' .... but there again he has his own Tech I & II  

[Bandit127]

Not an answer to your question Andy, but another question.

How does engine management know #2 is misfiring? Is there a knock sensor on each cylinder that is also used to detect regular ignition.. Or is the DIS pack monitored?

TIA

[Andy B]

.....
How does engine management know #2 is misfiring? Is there a knock sensor on each cylinder that is also used to detect regular ignition.. Or is the DIS pack monitored?

TIA

Not a clue mate! Magic!   Apparently code 300 is a general misfire & 301 to 304 is a misfire on 1 to 4 cylinders. Modern electrickery is seemingly very good.        

I'm sure that someone [size=8](MarksDTM)[/size] will know or find out.      

[Martin_1962]

Start cheap - PLUGS

[Marks DTM Calib]

I knows because its a coil per plug setup....so it fires the cylidner and listens for the firing via the knock sensor.....hence no ignition, no signal detected and miss fire stored against a specific cylinder.

On the case of engines of this era, they often shut the injector off to proctect the cat so you end up running on 3 cylinders until you restart (assuming its now clear).

This is normaly the coil pack going.....


Z16XE or XEP (twin port)....

which is either:

http://cgi.ebay.co.uk/Vauxhall-Vectra-Astra-Signum-Zafira-Ignition-Coil-Pack_W0QQitemZ260323102985QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item260323102985&_trksid=p3286.c0.m14&_trkparms=72%3A1301%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318

or

http://cgi.ebay.co.uk/Ignition-Coil-Vauxhall-19005212-DELPHI-Astra-G-Zafira-A_W0QQitemZ230312241674QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item230312241674&_trksid=p3286.c0.m14&_trkparms=72%3A1301%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318

[Andy B]

......
On the case of engines of this era, they often shut the injector off to proctect the cat so you end up running on 3 cylinders until you restart (assuming its now clear).

This is normaly the coil pack going.....


Z16XE or XEP (twin port)....

which is either:

http://cgi.ebay.co.uk/Vauxhall-Vectra-Astra-Signum-Zafira-Ignition-Coil-Pack_W0QQitemZ260323102985QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item260323102985&_trksid=p3286.c0.m14&_trkparms=72%3A1301%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318

or

http://cgi.ebay.co.uk/Ignition-Coil-Vauxhall-19005212-DELPHI-Astra-G-Zafira-A_W0QQitemZ230312241674QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item230312241674&_trksid=p3286.c0.m14&_trkparms=72%3A1301%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318

EML still on but seems to drive fine, I even tried diving it hard-ish and the thing just accelerated as normal ... it even idled OK. It's the Z16XE engine.
Bloody Hell! Vauxhall want £104+vat even on Trade Club!!

SWMBO will have to go to work in the Omega tomorrow & I'll call for a set of plugs for hers on my way home from work, as said ... the cheapest first.  

[Andy B]

I knows because its a coil per plug setup....so it fires the cylidner and listens for the firing via the knock sensor.....hence no ignition, no signal detected and miss fire stored against a specific cylinder. .......

Thanks Mark ... I knew you'd know.        

[Martin_1962]

I had similar and it was plugs I was very releived

[Andy B]

I had similar and it was plugs I was very releived

Here's hoping it's the same as yours then!    

[Andy B]

I had similar and it was plugs I was very releived

Here's hoping it's the same as yours then!    

A new set of plugs has sorted it!     The old plug looks just the same as the others, same colour, no bits missing, no oil, no cracks around the coil pack ..... but who cares? The EML is out, SWMBO is happy & I can keep my wallet in my pocket!            

[Andy B]

It's back!      
But this time I've got 0300 and 0302 so it looks like I'll be buying another coil pack after all!  

[Vamps]

Time we brought back points............

[Andy B]

Time we brought back points............

[size=18]NOooooooooo!!!!![/size]      
Anything  but those bloody things! They kept their setting for the first  ...... 100 yards cos either they wore where they ran against the cam or the faces of the points spiked! Getting rid of them on my Manta was the best thing I ever did.    

[Vamps]

Time we brought back points............

[size=18]NOooooooooo!!!!![/size]      
Anything  but those bloody things! They kept their setting for the first  ...... 100 yards cos either they wore where they ran against the cam or the faces of the points spiked! Getting rid of them on my Manta was the best thing I ever did.    

At least you could fix them, regularly.................

[Martin_1962]

Time we brought back points............

Work of the devil, had them on a bike - an absolute nightmare. All my cars have been electronic ignition if carbed