Could anyone tell me the name of this (picture in post)

[daniandrich]

Could anyone tell me the name of this.. (pictured with arrow pointing to 2 little green caps) as our car no longer has these ....  & Also will this cause a problem for the car? As we have been having problems with ours, we have replaced the ecu relay and the fuel pump relay. and are now thinking that it could be just these little things that have caused the trouble. Picture below.

[daniandrich]

[boneybradley]

It's a vacuum line with a 1 way valve, if the caps are missing the car will idle badly (put you fingers over the holes and you'll see the engine settle a bit)
I am looking for a part number but can't find it on my system!!

[daniandrich]

Yes, my other-half put his finger over the top and the car sorta jumped back to life a little as we have had problems with it cutting out when he slows down (1st and 2nd gear and also braking). really want to get her sorted out as she is a pleasure to drive when she is in full working order. Thank you for telling us the name of it as we have been racking our brain.. Really appreciate it

[VW BUSH]

Put a small bit of vac hose over both of them

[daniandrich]

http://www.ebay.co.uk/itm/Silicon-Blanking-Cap-Intake-Vacuum-Hose-End-Bung-Plug-Silicon-Caps-10pcs-/290839020848?pt=LH_DefaultDomain_3&var=&hash=item43b75b4530

this will do ok then i just stumbled across them on ebay

[daniandrich]

Just quickly before i commit to buy, how big or small rather should i be looking ta cos they say 10mm and also 6mm/4mm etc.. just so i dont buy one that is massive.