[veedubmechanic]

You problably have a faulty Idle Stabilizer Valve or "ISV". It controls the idle speed on the car and is a common problem. Its connected to the back on the intake manifold and looks like an inhaler but its metal. Unplug the electrical connector and see if the car starts better. (if the part is bad its unfortunately about 450.00 to replace it) You can usually get away with driving it unplugged but the check engine light will be on and the engine will idle high (1000rpms)