In addition, you could be losing fuel pressure when you shut down (I.E. the pump one-way valve or accumulator could be leaking). Start by running a premium grade fuel injector cleaner in your gas (something like Chevron Techron, 20oz). Also unplug your cold-start valve before startup; if your cold-start miss goes away, it could indicate a vacuum leak, possibly the auxiliary air lines.

Surging idle could be vacuum leak, defective k-jet componant (O2 sensor, lambda valve, etc), faulty throttle switch or sticking idle air valve, or faulty idle control unit. You can short out the terminals on the throttle switch to see if your idle changes; when the appropriate terminals are crossed, it causes your car to idle down.

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