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What would cause engine to shut off when going over bump?

Several factors can cause an engine to shut off when going over a bump. Here are some possibilities:

1. Loose or faulty electrical connections: Vibrations from the bump can cause loose electrical connections to momentarily break, interrupting the power supply to the engine's ignition system or fuel injection system. This can lead to a sudden engine shutdown.

2. Fuel supply issues: If the fuel filter is clogged or the fuel pump is malfunctioning, the engine may not receive sufficient fuel when subjected to sudden jolts or bumps. This can cause the engine to sputter and eventually stall.

3. Engine sensor malfunctions: Certain sensors, such as the crankshaft position sensor or camshaft position sensor, play a crucial role in engine management. If these sensors are damaged or malfunctioning, they can misinterpret the engine's position or speed, causing the engine control unit (ECU) to shut down the engine as a safety measure.

4. Weak battery or alternator: A weak battery or a faulty alternator can cause voltage fluctuations, affecting the engine's ignition system and fuel injection system. When going over a bump, these voltage fluctuations can become more pronounced, leading to engine shutdown.

5. Mechanical issues: In rare cases, mechanical problems such as worn engine mounts or damaged wiring harnesses can also contribute to this issue. These issues can worsen with the vibrations caused by going over a bump, causing the engine to stall.

If you experience your engine shutting off when going over a bump, it's essential to have the vehicle diagnosed by a qualified mechanic as soon as possible. They can identify the specific cause and perform necessary repairs to ensure safe and reliable engine operation.