Crankshaft Position Sensor(S)
WARNING: This page is about a different car, the 1995 Mazda RX-7. However, it is still accessible from the selected car via links, so may be relevant.
Unplug Crankshaft Position (CKP) sensor. Measure resistance across terminals. Replace sensor if resistance is not 950-1250 ohms @ 68°F (20°C).