Surging idle upon startup
I have a 2000 zetec with an automatic. When the motor is cold and it isn't warm weather outside I will start it and it will have a surging idle for just a couple of seconds then act completely normal. If I tap the throttle when it's surging it will also clean up it's act even sooner than if i wait it out. Usually only lasts like 5 seconds or so though. Not sure what it could be. Anyone had this problem before?