My idle engine has been racing at idle. It feels like the fast idle cam is sticking because when I manually trip the cam, my idle goes back to normal. My question is... On an 84 k5 305 w/ rochester quadrajet 4 barrel w/ electric choke, if I have a loose electrical connection to the choke, will that let it catch on high idle? Could someone explain the mechanism that dissengages the fast idle cam? is it electrically heated? I'm asking because the connector is broken and the wire was hanging off the choke connection this morning. I probably did that when I put the air cleaner back on yestaerday. Thanks. And just to give credit where credit is due my blazer would probably be a driveway queen without this site.