I had an issue with the pressure sensor - no reading on the dash, investigation showed the VX is the same sensor as for a Thema Turbo and Fiat 127 (and, I think, Fiat Croma Turbo)
OEM Part numbers : Oil Pressure Sensor 5971468 - 82387236 - 82353871
I ordered one from eBay from Taiwan, fitted it and it’s working. As old stock I guess there is always a risk of a faulty part, but at the price this is great value. (£40 Inc shipping.) You can search the OEM part numbers for other suppliers.
https://www.ebay.co.uk/itm/184325778794?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=Cj86mrokQw2&sssrc=4429486&ssuid=MNzi2RlJS1O&var=&widget_ver=artemis&media=COPY
