The problem you describe could be result of a dirty of defective Idle Air Control (IAC) sensor/motor. This sensor is located on your vehicles, throttle body. The purpose of this sensor is to control the car's idle under various operating conditions including ambient temperature. In order for it to function correctly, the internal components must be clean (meaning, little or no carbon build up) and it must be undamaged. Sometimes the IAC can be cleaned; however, if this cleaning procedure is not properly done, the IAC can become damaged. This sensor is also sometimes called the "Cold Start" sensor and is located on your Throttle Body (easy to ckean and replace). A new IAC will cost $50-$100. My guess is your IAC needs to be cleaned or replaced. Good Luck!
The FixYa Team.
First do the OBD code check to pinpoint more the problem. There could be a few factors as electric fuel pump, electronic ignigtion or timing. You need to have it check by a handy mechanic friend or certified mechanic will be wisely before you do it your self ..
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