Normd, don't know if you've seen my post on the other, similar thread, but I've fitted the valve and it's made a huge difference. No more stalling.
Was a very quick, 5 minute job. The valve is screwed in to the side of the throttle linkage, just to the left where the throttle cable ends. If you look at a picture of one you'll recognise it when you look in your engine bay. You'll need a torx 15 allen key to get it out, I bought one of these off ebay too for pennies.
I think the fella I bought the valve from has a few more, so would be worth your while looking on eBay. It was advertised as a Peugeot 806 idle control valve and fits a lot of Peugeot and Citroen models as well as the Ulysse.