
The signal from this sensor goes to the PCM or ignition module that switches the ignition coil(s) on and off. What sensor would cause no spark?Ī bad Crankshaft Position sensor is a common cause of no starts. The igniter or ignition module, the pick up coil or crank sensor, the cam sensor, and the ignition switch are included. No spark is one of the most common causes of a no-start condition.

This will cause the vehicle to immediately stall due to fuel and spark being cut off.

Will a bad fuel pump relay cause no spark? If the ignition relay shorts, burns out, or otherwise fails while the engine is operating it will cut off power to the fuel pump and ignition system.
