Fuel/coolant air bleed valve

Hello to the best site on the web, I was installing inner tie rod bushings I was bent over engine compartment and inadvertently hit something in the throttle area as I heard two distinct clicks. I looked and did not see what I messed up, so I finished job and when I was test driving it I noticed upon acceleration it seems to be getting too much gas or fuel if you will, in the mid range after shifting to cruising speed seems fine when driving around town when it shifts into third it seems I think to be getting not enough fuel because I will have to kick down to lower gear to get any response. My question is what ever I hit that clicked. What is it where is it and how do I adjust it back because she ran much before I did that? My second question is I know I have unwanted air pocket in cooling system on the thermostat housing is what appears to be a bleeder valve, how do I get air out using this valve?