Essi// Speed slows down in cold condition

Good evening, I have a problem with my Essi, when it is cold I have the feeling that it does not take any gas at the first few meters and is dying shortly before. Then I have to take the gear out and give gas then it goes again. Furthermore, I noticed in the cold condition that when I drive towards a traffic light and brake the speed drops to approx. 550U/min it catches but nevertheless this can not be normal. In the warm condition it does not take from 3500U/min anymore Gas to and from 4000, but it doesn’t always pull this again. I changed or controlled the following parts. Air Mass Meter Spark Plugs I hope you can help me further as if you were afraid that the engine would say goodbye. So still the data Essi BJ97 1,8Zetec with 116PS