I have Mazda Axela 2004 with automatic transmission. Recently i find that gear from 3rd to 4th can't change automatically with speed until some release of pressure from acceleration pedal. other gear change automatically with speed but only while need to change 4th gear from 3rd if i continuously increased the pressure in the pedal it can not change the gear rather speed as well as RPM increased, the gear change to 4th as soon as some depressed pressure from pedal. I already change ATF, Clean Filter chamber but not solved. is there anyone can help??