Alright, I just went and changed out idle air control valve with a different one I had not used before. Also, I changed out short hose on intake side of valve & rechecked vacumn connections under intake manifold again. Engine had cooled down already. I cranked car and idle went to 1000 and stayed there until water temp gauge started climbing. As temp gauge climbed to normal so did the idle climb to 1600-1800. Cut car off, restarted engine and the idle climbed right back to 1600-1800. It was at 1000 until the temp went up. Could this mean water temp sensor is bad?