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[Thingymabob]

Could someone please tell me the function of the part with a red arrow pointing at it?
A cable plug (yellow arrow) is connected to the component.

[jonny2112]

Is that not the rear multiram connector?
Someone will confirm 

[Thingymabob]

This is a photo on the cable plug/connector on my car. Could this be the rear multiram connector?

[feeutfo]

That is the rear multi ram actuation valve. Runs on vacume and electrickary.

Covered in the guides.

[Thingymabob]

Thanks a lot. Means that I have a broken rear multi ram actuation valve
This little part of the valve was connected to the cable plug but unfortunately not connected to the rest of the valve...

1. Does anyone know the part number for this valve?
2. The engine seems to run fine, even if this valve is not connected Could someone explain this to me, please.
    Will I see any difference when i get a new rear multi ram actuation valve and connect it?

[feeutfo]

...and that plug resting on the cable tray, means its not working.

Or is this a work in progress pic?

Ah, just seen you last.

Engine will run fine. It alters the length of the inlet tract via a valve in the plenum.

In conjunction with the front multi ram, it tunes the intake to give both high and low rpm power.

If either fail, you'll see loss of power and economy in either the top or bottom half of the rev range.

I'm sure a used one will be fine. You might get a pm from one of the breakers here. Or ask one of the admins to move this, or a sales advert composed in test zone, to the sale/wanted section for you.

[ffcgary1]

you will notice a difference when you plant your right foot into the floor, this valve opens at 4000 rpm and increases performance, it works in tandem with the front multi ram on the bagpipes.

[Steve B]

...and that plug resting on the cable tray, means its not working.

Or is this a work in progress pic?

Ah, just seen you last.

Engine will run fine. It alters the length of the inlet tract via a valve in the plenum.

In conjunction with the front multi ram, it tunes the intake to give both high and low rpm power.

If either fail, you'll see loss of power and economy in either the top or bottom half of the rev range.

I'm sure a used one will be fine. You might get a pm from one of the breakers here. Or ask one of the admins to move this, or a sales advert composed in test zone, to the sale/wanted section for you.

you ask and you get the answer...thats what makes this a A1 forum for omega owners.

[TheBoy]

any of the breakers here will have bucketloads of these

[Thingymabob]

...and that plug resting on the cable tray, means its not working.

Or is this a work in progress pic?

Ah, just seen you last.

Engine will run fine. It alters the length of the inlet tract via a valve in the plenum.

In conjunction with the front multi ram, it tunes the intake to give both high and low rpm power.

If either fail, you'll see loss of power and economy in either the top or bottom half of the rev range.

I'm sure a used one will be fine. You might get a pm from one of the breakers here. Or ask one of the admins to move this, or a sales advert composed in test zone, to the sale/wanted section for you.

you ask and you get the answer...thats what makes this a A1 forum for omega owners.

Couldn't agree more; My humble thanks to you all

[Thingymabob]

Could it be this part I need to replace?
http://www.vauxhallworldparts.com/vauxhall.php?partnumber=90466214

[albitz]

Yes,but its £50 excluding delivery costs.I have offered one to someone today for £10 including delivery in the uk.
I may have another one.I could have a look tomorrow and let you know.
Hope this isnt in breach of "selling outside for sale section rule". If so,  admins please delete and I will make contact via PM.

[geoffr70]

I've just Pm'd you about that Albs!!

Thingymabob that's a coincidence I broke mine aswell. Engine runs fine but as said you can feel a difference when you accelerate hard. Luckily for me I've only done a few miles since and it's easy to fix! Serves me right for being so brash!

[Marks DTM Calib]

You can always fit the one off the secondary air injection as a temporary fix.