There is a part on my 84 GP that is just to the left of the alternator. It has a big hose coming from the air breather and a little vacuum hose, too. It also has electical connections to it. One of the hose broke off of it, it seems that there was something plastic it connected to, it is all melted and burnt. I assume it has something to do with the exhaust. What is it? I need to replace it.