I need a IACV for a 91 TT, but i believe all work work. I need to make sure it is working and functioning as it should. I believe you can test them with a 9 volt battery if you are not sure. Please do not send me outrageous prices because I know how many are out there and there is not a big demand for these things. I have purchased two of these and neither of them worked. I need to know that your works! Please email me with prices.