Hi guys I find it strange that my mazda 3 2008 1.6 is like shifting early, from 0-20 from first gear to 2nd gear and like from 20-30 to 3rd gear and 30-40 or sometimes 70 to 4th gear i find it weird that it shifts so early and when the speed is slowing down when it reach the 40 mark it doesnt change the gear from 3rd to 2nd but wait till its like 10 to shift to 1st, im thinking whether its a speed sensor issue or solenoids, I newly replaced my ATf so I know its not a problem, any idea? guys, there is no CEL or AT light what so ever