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[Doctor Gollum]

 Could have been built for the Irish market and then simply rebadged as ordered. The build data should specify all the info.

For example, I know my Merc was built for the UK but supplied to the original customer unregistered just from the data sheet.

[Enceladus]

Regardless of the intended market and branding all Omega B and B2 were built by Opel Automobile GmbH in Rüsselsheim am Main. So don't they all say Opel or Adam Opel AG?

[Doctor Gollum]

I'll check the plates of mine...

[Doctor Gollum]

I'll check the plates of mine...

Both Opel. And no country of manufacture, although iirc, the production site is a letter in the chassis number...

Mercedes give the official company name and "Made in..." Daimler Chrysler and "Germany" in the case of the Barge.

It's interesting that different manufacturers approach the same thing so differently.

[addy]

Well the laptop decided to shutdown twice, but got some data. It was taken from car started, with no throttle. It was 0 degrees outside and the car was white with frost. The new coolant temp sensor seems to be working, also think the new Genuine IAT, new ICV and genuine NKG O2 sensor, correct for the cars year are seeming to be working? Or can anyone see anything amiss?

Thanks in advance for any help.

Data taken today.
First part from cold, before laptop shutdown
https://drive.google.com/file/d/1cSc5XuPcl_zaCpNUnFmZRAh1cIuRW23N/view?usp=sharing

2nd part once sorted laptop
https://drive.google.com/file/d/1wDtJbJ-5tZJBNp0spKdNNby72Kjl-NIA/view?usp=sharing

[Enceladus]

Looks like you stopped the live data before the engine was fully warmed up.
The maximum coolant temperature is only 82°C, so the engine is still not properly hot.
The thermostat should remain closed until it starts to open at 92°. 107° for fully open. If it opens too soon or is stuck open then the engine will run cool.

You're flipping between closed and open loop.

[addy]

Thanks Enceladus, for the quick reply.

Will try and get some more data today, if weather and laptop allow. The laptop was not playing yesterday, kept shutting down.  The O2 sensor is new a Genuine NGK. The car was going open/closed with all the O2 sensors, fitted after the Headgasket went. The one on now, was bought recently and was put safe, in a place with no damp or where is could be damaged. It was fitted to the new Catalyst.

The voltage is fluctuating on it, checked wiring and connector nothing looks bad. Contacts in connector are nice and clean, so does it mean O2 is working and engine temp is stopping it going closed loop?

At what temperature should the O2 go closed loop?

Thanks again
Addy