Thanks for the help. I don't think that piece is the one, as it says Temperature censor. wouldn't that be for the gauge in the car? There are three coming out or thermostat outlet, Though mine is temperature related causing the vacuum, the company had no picture and the auto store has it for special order for 70bucks. so that can't be it. The Mitsu parts guy stated, "I am so happy they stopped putting these damn vacuum switches on the car." They are determinately a rarity. we found a engine part number oMD101458, but that was the third gauge with has THREE ports and I need the one with TWO ports. I am still looking. I saw a parts number in the cad program, it was for the 88 mighty max...same engine though...still looking. Thanks for the help.