1998 Chevy Malibu engine cooling and deceleration

I have 2 questions. Mainly just looking for some ideas to my concerns and some possible resolutions that aren't going to cost me an arm and a leg.
so my engine is running hotter than normal. The coolant is full and I can't see anything from the top when it comes to hoses and such that are disconnected. It stays at temp when I drive with the heat on. My other concern is that when I take my foot off the gas peddle, it doesn't decelerate as fast as it normally does. It kinda just hangs out for a few seconds before it starts to drop. Does anyone have any ideas that could help me? Thanx!