britpop95 0 Posted September 27, 2015 Oreet friends, last night set off in the Corrado to pick the mrs up from a friends birthday do. Pulled up outside her house steam coming out the bonnet, turns out the plastic outlet that comes from the auxiliary water pump had gone brittle over time and snapped off , coolant everywhere tried plugging the leak but obviously being a jagged plastic hole not much I could do at 11 at night 😩 Quote Share this post Link to post Share on other sites
VW_OwneR_85 1 Posted September 27, 2015 ah gutted ,i dont have one, i have a bit of 22mm copper pipe in place of mine , that should sort you out until you replace it Quote Share this post Link to post Share on other sites
fendervg 30 Posted September 27, 2015 Yeah. I had to replace mine a few years ago. To be honest I think you can get away without one with no problems. Typical German over-engineering! Quote Share this post Link to post Share on other sites
britpop95 0 Posted September 27, 2015 Ye I read about it not being absolutely vital to the cooling system and possibly doing away with it but then I read it takes pressure of the heater matrix, and if I had to replace that again I would fuming . I've seen the auxiliary pump on heritage around the £60 mark and doesn't look hard to change. Quote Share this post Link to post Share on other sites
fendervg 30 Posted September 27, 2015 Very easy to change. You'll just lose a little coolant and will have to top up afterwards. One thing I found was that the rubber mount that the pump sits in didn't fit the newer replacement pump exactly, but it was easy enough to make it fit. Quote Share this post Link to post Share on other sites
VW_OwneR_85 1 Posted September 27, 2015 from what iv read some where , my under standing is its function is to circulate the coolant after the engine is shut down to maintain even heat distribution to avoid distortion, i.e uneven expansion/contraction {mainly in the head}, kinda makes sense i guess... Quote Share this post Link to post Share on other sites
fendervg 30 Posted September 27, 2015 That's it. I kept mine on the basis that it had to be there for a reason. Quote Share this post Link to post Share on other sites
VW_OwneR_85 1 Posted September 27, 2015 mines been fine without it, only reason its not fitted is because the wiring for it isnt there anymore due to engine swap Quote Share this post Link to post Share on other sites
Jim 1 Posted September 27, 2015 Bought and fitted one a few months back after finding mine has been in its death throes for some time. Bit cheaper than heritage - think it worked out about €61 (£45) shipped to the UK: http://www.ebay.co.uk/itm/Made-in-Germany-Electric-water-pump-251-965-561-B-VW-Bosch-0392020024-039202008-/181867583631? Great seller too. Shipped quickly with tracking details. Definitely made a small improvement to my coolant temps. Quote Share this post Link to post Share on other sites
Fine wine, Belgian chocs. 1 Posted September 27, 2015 Mine split a couple of years ago during the MOT - just as the tester was leaning over the engine to read the chassis number and showered him in boiling coolant. Quote Share this post Link to post Share on other sites
Jim 1 Posted September 27, 2015 How not to endear yourself or your car to your local MOT tester.. lol :) Quote Share this post Link to post Share on other sites
Fine wine, Belgian chocs. 1 Posted September 27, 2015 Absolutely. This was also the day I found out that the RAC wouldn't recover a car that wasn't taxed. I've had better days. Quote Share this post Link to post Share on other sites
britpop95 0 Posted October 5, 2015 Well guys the new auxiliary pump is now on very easy job . Some mole grips and a little pushing and nudging and it was in no problem. Now though... Haha when I turn the ignition on I can here water filling or circulating in the heater matrix ? Is this supposed to be a audible noise the heater matrix is only 4 months old I'm starting to wonder if my old auxiliary pump was even working? Quote Share this post Link to post Share on other sites
Jim Bowen 1 Posted October 5, 2015 Might be a bit of air in the system. Although am sure some slight noise is normal. Do you samco hoses or similar? Quote Share this post Link to post Share on other sites
britpop95 0 Posted October 6, 2015 Ye I use samco hoses , never thought of air in the system first thing I will check cheers jim Quote Share this post Link to post Share on other sites
Jim Bowen 1 Posted October 6, 2015 I only mention the samcos as there is a non-return valve in the original hoses, which doesn't come with the samcos. Mine seems better after fitting my own valve inline. Quote Share this post Link to post Share on other sites
britpop95 0 Posted October 6, 2015 Where is the non-return valve located originally jim can't remember seeing in when I swapped over to samco Quote Share this post Link to post Share on other sites
Jim Bowen 1 Posted October 6, 2015 Its inside one of the old hoses, (i'm told, didn't notice mine either), I bought an aftermarket one and fitted it. Can just about see it on the rear hose to throttle body. Quote Share this post Link to post Share on other sites
britpop95 0 Posted October 6, 2015 Ye I see it jim cheers pal btw lovely looking manifold 👍 Quote Share this post Link to post Share on other sites
Jim Bowen 1 Posted October 6, 2015 Took hours with sandpaper to do that, tbh, i look back and think i would rather have a sprayed textured one. Quote Share this post Link to post Share on other sites
fendervg 30 Posted October 6, 2015 Shiny! The non-return valve was a dealer recall item to stop people suing after the heater matrix dumped all its hot coolant on the passenger's legs. I think. Also often seen on MkII Golfs. Quote Share this post Link to post Share on other sites
fendervg 30 Posted October 6, 2015 Actually that doesn't make sense. But it would stop more leaking out after the initial dump of coolant. Was definitely a recall item though. Quote Share this post Link to post Share on other sites
