For the last 3or4 days when I turn my car on its running rough, sounds like my lawn mower, speeds up really slow, it hits 40km and it kicks in abit and then in hits 60km and it kicks in abit more, if I slow down or stop I have to build up the speed again which like I said even when putting my foot down happens really slowly and it last for 5-15mins each morning but once it stops doing it after the 5 to 15mins it's completely fine for the rest of the day, no matter how many time I turn the car on and off or how far I drive its fine. So I don't know what's wrong with it and I've taken it to a couple mechanics and they can't figure it out either. (I thinks it's a 1999 or 2000 model)