I expect the IAC (idle air control motor) is not working - either a fault with it or the wiring to it. The air channel the IAC pintle is controlling may also be very dirty. I would first try replacing the IAC; however there are important instructions to follow after installing a new one.
Answers & Comments
I expect the IAC (idle air control motor) is not working - either a fault with it or the wiring to it. The air channel the IAC pintle is controlling may also be very dirty. I would first try replacing the IAC; however there are important instructions to follow after installing a new one.