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[andymp]

Hi. Whilst looking through the vacuum fittings for perished ones, I found a black box on the back of the cabin filter housing with two vacuum elbows into it? What is it?
Thankyou in advance.

[Andy B]

Hi. Whilst looking through the vacuum fittings for perished ones, I found a black box on the back of the cabin filter housing with two vacuum elbows into it? What is it?
Thankyou in advance.

Sounds like one the vacuum reservoir tanks .... there's another at the front of the car near the bottom of the rad - driver's side IIRC 

[andymp]

There is another cylinder shaped one inside the inner wing behind the front offside whee which is a reservoir for the engine systems, the one on the cabin filter must supply the climate systems?

[Andy B]

There is another cylinder shaped one inside the inner wing behind the front offside whee which is a reservoir for the engine systems, the one on the cabin filter must supply the climate systems?

I wouldn't call them cylindrical  but if they're both the same, then yes, it's another vacuum reservoir. Early cars just had one I think, but climate must've made a requirement for 2 of then ..... presumably to maintain climate when you had your right foot buried in the carpet   

[VXL V6]

There is another cylinder shaped one inside the inner wing behind the front offside whee which is a reservoir for the engine systems, the one on the cabin filter must supply the climate systems?

I wouldn't call them cylindrical  but if they're both the same, then yes, it's another vacuum reservoir. Early cars just had one I think, but climate must've made a requirement for 2 of then ..... presumably to maintain climate when you had your right foot buried in the carpet   

DTi's have the extra cylinder vacuum tank in the o/s wing where the carbon canister would be on a V6 model.

[Andy B]

There is another cylinder shaped one inside the inner wing behind the front offside whee which is a reservoir for the engine systems, the one on the cabin filter must supply the climate systems?

I wouldn't call them cylindrical  but if they're both the same, then yes, it's another vacuum reservoir. Early cars just had one I think, but climate must've made a requirement for 2 of then ..... presumably to maintain climate when you had your right foot buried in the carpet   

DTi's have the extra cylinder vacuum tank in the o/s wing where the carbon canister would be on a V6 model.

Ah! I keep forgetting that not all Omegas are V6s