You need an OBDII code reader. They can be had cheap at most any discount parts store and can likely be returned as well. It sounds like maybe the MAP sensor died, froze up or otherwise quit working.
Unplug it (should be on top of the manifold, to the right of the coilpak) and start it up. See if it continues to run. If so, get the code read so you can diagnose it.
Unplug it (should be on top of the manifold, to the right of the coilpak) and start it up. See if it continues to run. If so, get the code read so you can diagnose it.
