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[zYx]

Hi all and happy new year.

I've recently been having problems with my omega. Since I used that weird eco 95 octane petrol in Germany my engine management light kept coming on since I'm back in UK.

Since august I've been disconnecting the battery to remove the engine light, maybe 3-4 times all together. Just before xmas the engine stopped running correctly and sounds like only half of the cylinders are working.

You know the codes and here's the video. You can skip to the end to hear the engine.

http://youtu.be/R0V7GAIaMWw

I'd be grateful for an advise.

Regards,
M.

[05omegav6]

When were the plugs last changed?

Any sign of oil/water in the plug wells?

First off, new plugs, coil packs if any significant rusting under them, then two c of Wynns Petrol system cleaner and a full tank of Shell Vpower

[jonny2112]

When were the plugs last changed?

Any sign of oil/water in the plug wells?

First off, new plugs, coil packs if any significant rusting under them, then two c of Wynns Petrol system cleaner and a full tank of Shell Vpower

Too slow!! What al said 
Must be coil pack or plug related surely?

[zYx]

I owed it since dec 2007 and never had any problems with plugs or coils until now by the look of it.

Are you suggesting the whole lot to be replaced? What's the safest and cheapest place to get it all?

There is no visible rust or oil leaks around coils.

[chrisgixer]

No cylinder 4...?

I got missfires on all cylinders when it was running rich on lpg. Missfire doesn't always mean ignition. ...although there's no fuel trim code.

But as said, got to start with removing coil pacs for clues.

Does the scuttle leak? Btw? Any water marks on the cam covers around the cp. is the scuttle foam wet?

[05omegav6]

I owed it since dec 2007 and never had any problems with plugs or coils until now by the look of it.

Are you suggesting the whole lot to be replaced? What's the safest and cheapest place to get it all?

There is no visible rust or oil leaks around coils.

Plugs from VX if you get on with your local dealer/have trade club access. I would say quads, others would disagree.
Coil pack known good used ok, readily available here. If new must be genuine Bosch, any factor,
http://www.ebay.co.uk/itm/1X-GENUINE-BOSCH-IGNITION-MODULE-COIL-VAUXHALL-OMEGA-B-2-6-3-2-00-03-SIGNUM-3-2-/370966897296?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Model%3AOmega+B&hash=item565f59a290 £211 delivered.
Or here...
http://www.ebay.com/itm/Saturn-Vue-L-Series-Cadillac-Catera-CTS-V6-Ignition-Coil-Pack-Pair-Set-/310814479361?pt=Motors_Car_Truck_Parts_Accessories&fits=Make%3ACadillac%7CModel%3ACatera&hash=item485dfc9401&vxp=mtr £122 delivered.

Both are pairs of brand new coilpacks, and show, as ever that it pays to shop around...

Wynns petrol treatment is readily available from factors/halfrods and some garages

[Marks DTM Calib]

To many codes on to many cylinders to be pointing at plugs or coil pack, you would expect one or two cylinders, not five.

I would be wanting to see some live data results including block learn values, and MAF readings before changing anything. 

[Gaffers]

To many codes on to many cylinders to be pointing at plugs or coil pack, you would expect one or two cylinders, not five.

Unless they are all practising their backstroke together

[zYx]

No cylinder 4...?

I got missfires on all cylinders when it was running rich on lpg. Missfire doesn't always mean ignition. ...although there's no fuel trim code.

But as said, got to start with removing coil pacs for clues.

Does the scuttle leak? Btw? Any water marks on the cam covers around the cp. is the scuttle foam wet?

As far as I'm concerned there is no leak. I do open the bonnet sometimes Cambelt is new, but squeaky as hell when cold...

I owed it since dec 2007 and never had any problems with plugs or coils until now by the look of it.

Are you suggesting the whole lot to be replaced? What's the safest and cheapest place to get it all?

There is no visible rust or oil leaks around coils.

Plugs from VX if you get on with your local dealer/have trade club access. I would say quads, others would disagree.
Coil pack known good used ok, readily available here. If new must be genuine Bosch, any factor,
http://www.ebay.co.uk/itm/1X-GENUINE-BOSCH-IGNITION-MODULE-COIL-VAUXHALL-OMEGA-B-2-6-3-2-00-03-SIGNUM-3-2-/370966897296?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Model%3AOmega+B&hash=item565f59a290 £211 delivered.
Or here...
http://www.ebay.com/itm/Saturn-Vue-L-Series-Cadillac-Catera-CTS-V6-Ignition-Coil-Pack-Pair-Set-/310814479361?pt=Motors_Car_Truck_Parts_Accessories&fits=Make%3ACadillac%7CModel%3ACatera&hash=item485dfc9401&vxp=mtr £122 delivered.

Both are pairs of brand new coilpacks, and show, as ever that it pays to shop around...

Wynns petrol treatment is readily available from factors/halfrods and some garages

Now that's interesting. I was wondering when I'm gonna have to buy it... I think now might be the time :]

To many codes on to many cylinders to be pointing at plugs or coil pack, you would expect one or two cylinders, not five.

I would be wanting to see some live data results including block learn values, and MAF readings before changing anything. 

On top of this, my neighbor's tools shows this:
P0047 and P1625 and now I'm not sure if his "tool" is any good with Omega, but I thought it's worth sharing.

[05omegav6]

Ideally the plugs should be changed at 40k

Can't help with additional codes, but if you suspect crappy fuel is to blame, the fuel cleaner and V power can only help

[zYx]

Ok so the coils from the second eBay link above, the ones from USA will fit my Y32SE?
It's significantly cheaper than uk prices :|

The crappy fuel is probably the cause of all this.

Could it be anything to do with co2 sensors by any chance?

[Marks DTM Calib]

Again, given we have codes which are affecting 5 out 6 cylidners over two banks, the process of investigation needs to look at what common items affect both banks.

Hence plugs and coil packs are a 'red herring' in my opinion at this stage and its better to pin point the fault rather than swap and change items which brings further unknowns into the equation.

Does your neighbours reader support live data reading?

P0047 is a generic OBD2 boost sensor fault code (so an invalid code in this application so maybe reader issue)
P1625 is a generic OBD2 ABS communication error

[05omegav6]

Regarding your issue, pay attention to Marks input

Regarding the coil packs, the last Cateras were also DBW, so will fit 2.6, 3.0(US), and 3.2

[zYx]

That device supports live data, however it shows nothing when connected to my omega other than those two error codes.

[chrisgixer]

That device supports live data, however it shows nothing when connected to my omega other than those two error codes.

Pedal trick is notably more reliable than some code readers. I'd ignore the code reader here tbh.

Did the car refuse to start In the video? It didn't sound good at the end.

Its worth further investigation before buying parts IMO, you need a bit more info to go on. (As as Mark Dtm says.)