Faulty sensors can keep your engine from starting, but this is often engineered in as a safety measure. For instance, the crank angle sensor or crankshaft position sensor may be located near the transmission belt housing and come in contact with water, which would prevent it from working.
Will a crankshaft sensor stop a car from starting?
No. You just cannot bypass the crankshaft sensor, the car will crank but will not start. Intermittent stalling If the crankshaft position sensor or its wiring have any issues, it can cause the crankshaft signal to be cut off while the engine is running, which can cause the engine to stall.
Does the crankshaft sensor control spark?
The crank position sensor (CKP) is perhaps the most important sensor in the modern engine. If you have crankshaft sensor issues, the ECM can't synchronize fuel injection, spark ignition (for gasoline engines) or control variable valve timing. Crankshaft sensor issues can cause a range of problems.
Will a bad map sensor cause a car not to start?
Bad MAP Sensor Symptoms
A bad manifold absolute pressure (MAP) sensor can upset fuel delivery and ignition timing. Depending on your vehicle model, your engine might experience one or more of these performance problems: Poor fuel economy. It won't start.