leigha 0 Posted November 10, 2006 am i right in thinking the expansion tank is the right place to top up the coolant? what's that odd button thingy in the top of it for (under the cap)? Quote Share this post Link to post Share on other sites
Supercharged 2 Posted November 10, 2006 yep... Button? - edit: sheet, I think your looking at the brake fluid revesvior! - don't stick coolant in there!!!!! Quote Share this post Link to post Share on other sites
NickVR6 0 Posted November 10, 2006 ordinarily yes you would fill it up from the header tank. The cap has a presure release valve in it, normally a black round bit that feel slightly loose. If the presure builds up too much then it allowd coolant/air to vent out of the header tank. They can fail with age, very common, and it will probably either let too much out, ie all the time when its hot, or nothing and you will blow a rad hose probably. Either way youll know though! On the VR its best to fill it up from the top rad hose, but thats very unusual, and only recommended on the VR6 i beleive? Quote Share this post Link to post Share on other sites
NickVR6 0 Posted November 10, 2006 crickey, yeah, not the brake fluid resevoir!! water tank is much bigger with a blue or black cap on it and no wires attached to the very top. Quote Share this post Link to post Share on other sites
leigha 0 Posted November 10, 2006 i'm not that daft!!!!! it's got a new expansion tank on it so it should be on ok condition. it's just the button part was tight in there and seemed like it didn't want to come out without damage. made me wonder if it wasn't supposed to for some odd reason? Quote Share this post Link to post Share on other sites
bcstudent 0 Posted November 10, 2006 I have no idea what 'button part' you're on about either. Can you take a photo of the offending piece? Quote Share this post Link to post Share on other sites
leigha 0 Posted November 10, 2006 it's a black plastic thing that sits in the top of the expansion tank, under the screw-on cap. Quote Share this post Link to post Share on other sites
nocrap 0 Posted November 11, 2006 Coolant sensor? Quote Share this post Link to post Share on other sites
diggerbucket 0 Posted November 11, 2006 It sounds like your cap has broken, with half of it staying behind when you take the top part off. It happened to my old Golf and for ages I thought it was meant to be like that! Is there a spring and a couple of other bits in there too? If so, you need to get it out and get a new cap. Quote Share this post Link to post Share on other sites
Supercharged 2 Posted November 11, 2006 diggerbucket, ah.... Quote Share this post Link to post Share on other sites
nocrap 0 Posted November 11, 2006 yeah that would make sense...... Quote Share this post Link to post Share on other sites
leigha 0 Posted November 12, 2006 It sounds like your cap has broken, with half of it staying behind when you take the top part off. It happened to my old Golf and for ages I thought it was meant to be like that! Is there a spring and a couple of other bits in there too? If so, you need to get it out and get a new cap. that would be odd as it's a new tank, the previous owner fitted it about 3 months ago. i'll have a look though. Quote Share this post Link to post Share on other sites
Supercharged 2 Posted November 12, 2006 Is it a blue of a black cap? Quote Share this post Link to post Share on other sites
Toad 0 Posted November 15, 2006 If you want to get that part out, let the car get pretty warm and undo the cap slowly, the built up pressure will force the broken part out. Quote Share this post Link to post Share on other sites
leigha 0 Posted November 23, 2006 finally got some pics of the offending parts: Quote Share this post Link to post Share on other sites
Jim 2 Posted November 23, 2006 Oops.. thats not meant to be stuck in there! Thats part of the blue cap that you took off! Not sure it can be reattached?! :) Quote Share this post Link to post Share on other sites
leigha 0 Posted November 23, 2006 looks like there are clips on the cap for it... i'll give it a go! though it looked odd! Quote Share this post Link to post Share on other sites
leigha 0 Posted November 27, 2006 it does clip back on! but then it falls off again... Quote Share this post Link to post Share on other sites
Supercharged 2 Posted November 27, 2006 Rip it out and buy a new cap... Quote Share this post Link to post Share on other sites
nocrap 0 Posted November 27, 2006 especially as there only about £2 from VWSpares Quote Share this post Link to post Share on other sites
craigowl 0 Posted November 27, 2006 I got new blue one 2 months ago. £5.75 incl VAT Part number - 1H0121321C. Called "cover". :roll: Quote Share this post Link to post Share on other sites
leigha 0 Posted November 27, 2006 not bloody bad!!!!! cheers! this one is actually only about 3 months old. they don't make things like they used to!!! Quote Share this post Link to post Share on other sites
diggerbucket 0 Posted November 27, 2006 Woohoo I was right :lol: Quote Share this post Link to post Share on other sites
