320cdw Posted April 24, 2014 Report Share Posted April 24, 2014 Hi all, Got the 320cd home and started to check out all the stuff I knew goes wrong, upon doing so I found this.... Zoomed in.... Does anyone know what connects to this tube? or is it nothing? It looks like some sort of diaphragm valve thingy... Thanks in advance... D Link to comment Share on other sites More sharing options...
bungers Posted April 24, 2014 Report Share Posted April 24, 2014 Looks like it could be the cooling vents actuator? Link to comment Share on other sites More sharing options...
320cdw Posted April 24, 2014 Author Report Share Posted April 24, 2014 Looks like it could be the cooling vents actuator? That is what I thought, what pipe connects onto it to work it though? Link to comment Share on other sites More sharing options...
bungers Posted April 24, 2014 Report Share Posted April 24, 2014 There should be a vacuum pipe connected. It'll help your mpg getting it working again, although I can only think something is wrong with it, hence the previous owner disconnecting it. Here's a diagram which should help: Link to comment Share on other sites More sharing options...
320cdw Posted April 24, 2014 Author Report Share Posted April 24, 2014 There should be a vacuum pipe connected. It'll help your mpg getting it working again, although I can only think something is wrong with it, hence the previous owner disconnecting it. Here's a diagram which should help: Ha! I just found the exact same diagram lol, there's a lot of stuff the previous owner had played with, cars a mine field, it's a laugh though... Link to comment Share on other sites More sharing options...
simonlpearce Posted April 24, 2014 Report Share Posted April 24, 2014 It looks like the recirc valve on a turbo which is used to dump the air pressure made by the turbo when coming off throttle. The vacuum hose that is supposed to be attached there allows the valve to open and close to match throttle response and regulate the air flow. Otherwise you are constantly boosting the engine. I may be wrong as i have never owned a TD before, so it could be completely unrelated. Link to comment Share on other sites More sharing options...
320cdw Posted April 24, 2014 Author Report Share Posted April 24, 2014 Bungers, Had a look at the RealOEM page again and noticed this... Does this mean it shouldn't be there because the product has been discontinued? Or does that just mean they don't sell it anymore... Link to comment Share on other sites More sharing options...
bungers Posted April 25, 2014 Report Share Posted April 25, 2014 No it should definitely be there. They stopped production of it in June 2013 apparently. It's used on lots of different cars & for different applications. According to realoem the replacement part number is 11658507249 - this may be a generic p/n for the vacuum hose which the dealer cuts to length. Personally I'd just get some silicon tubing. Link to comment Share on other sites More sharing options...
320cdw Posted April 25, 2014 Author Report Share Posted April 25, 2014 Aaaahh, right, yeah I'll get some for it. Thanks Link to comment Share on other sites More sharing options...
simonlpearce Posted April 25, 2014 Report Share Posted April 25, 2014 Did we ever figure out what it actually does though? Plus we know where one end plugs into, but what about the other? I expect you have a vacuum leak somewhere unless the other end has been properly plugged. jammo 1 Link to comment Share on other sites More sharing options...
320cdw Posted April 25, 2014 Author Report Share Posted April 25, 2014 Did we ever figure out what it actually does though? Plus we know where one end plugs into, but what about the other? I expect you have a vacuum leak somewhere unless the other end has been properly plugged. Yeah, it is an actuator for the 'venetian blind' on the radiator, I think it keeps the blind closed to help the car warm up quicker then once warm it will open it to allow the engine to be cooled by the viscous... the pipe goes down to a small electronic valve as per the pics above.. Link to comment Share on other sites More sharing options...
