When i start the car up it idles around 2K and slowly goes down. After i drive for a few minutes and come to a stop, the idle drops all the way down and the car almost stalls and sometimes does. After a few more minutes of driving the idle goes to the normal 750 position. Anyone know what could be the cause? The car wants to stall only after i first start driving.

 

vaccum leak or iac valve

the iac valve can usually be fixed by hitting it with a hammer