{"id":22417,"date":"2024-11-11T06:59:02","date_gmt":"2024-11-11T14:59:02","guid":{"rendered":"\/wp-site\/?p=22417"},"modified":"2025-07-14T18:16:46","modified_gmt":"2025-07-15T01:16:46","slug":"what-would-make-my-car-shut-off-while-driving","status":"publish","type":"car-repair","link":"https:\/\/jerry.ai\/car-repair\/what-would-make-my-car-shut-off-while-driving\/","title":{"rendered":"What Would Make My Car Shut Off While Driving?"},"content":{"rendered":"\n

Question:<\/strong> Yesterday, when I pulled into my driveway after work, my car completely shut off before I even put it in park. I\u2019m so thankful it didn\u2019t happen any sooner! What would cause my car to shut off while I\u2019m driving?<\/p>\n\n\n\n

Answer:<\/strong> I\u2019m so glad you made it home before anything more serious happened! Cars shouldn\u2019t shut off while driving, and when they do, you\u2019ll typically need to visit a mechanic. Most of the issues that might cause a sudden shut-off require specialized tools to diagnose and repair by an expert. They include:<\/p>\n\n\n\n

A malfunctioning crankshaft position sensor<\/h2>\n\n\n\n

The crankshaft translates movement in the engine to movement of the car\u2019s wheels. A malfunctioning crankshaft position sensor prevents the engine control unit from sensing the correct position and speed of the crankshaft, which can lead to stalling.<\/p>\n\n\n\n

A broken mass airflow sensor<\/h2>\n\n\n\n

The mass airflow sensor helps ensure the engine has the right mix of air and gas for combustion, but a broken sensor can disrupt the balance of air and fuel. That could lead your engine to run inefficiently or stall unexpectedly.<\/p>\n\n\n\n

A faulty fuel pump<\/h2>\n\n\n\n

A faulty fuel pump won\u2019t send enough fuel to the engine, which can cause it to sputter and shut off while driving.<\/p>\n\n\n\n

A damaged electrical system<\/h3>\n\n\n\n

The electrical system\u2014including the battery, the starter, and the alternator\u2014is the backbone of the engine. It supplies power to the fuel pumps, spark plugs, sensors and other components required for the engine to operate.<\/p>\n\n\n\n

If your alternator isn\u2019t working, it can cause your car to shut off by failing to charge the battery properly. Without sufficient electrical power from the battery, critical systems may fail, leading to engine shutdown.<\/p>\n\n\n\n

Likewise, if spark plugs don\u2019t have enough power, they\u2019ll fail to create the spark that causes combustion. And spark plugs themselves can break, which also creates problems.<\/p>\n\n\n\n

There are many more components that can cause electrical issues: a blown fuse, a bad wire, or faulty connections, among others.<\/p>\n\n\n\n

A defective ignition switch<\/h2>\n\n\n\n

Here\u2019s how your ignition switch works: After you insert your key, you rotate the ignition until you go through all the stages. Each stage\u2014OFF, ACC, ON, START\u2014turns on an increasing number of components.<\/p>\n\n\n\n

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  • ACC<\/strong> turns on accessories, such as the radio, which aren\u2019t necessary for the engine to run.<\/li>\n\n\n\n
  • ON<\/strong> turns on fuel pumps and other components necessary for the engine to run.<\/li>\n\n\n\n
  • START<\/strong> turns on the engine. Once the engine is running, the switch springs back to ON.<\/li>\n<\/ul>\n\n\n\n

    A defective ignition switch can cause your car to shut off while driving by failing to maintain the electrical connection required to keep the engine running.<\/p>\n\n\n\n

    Empty fuel tank<\/h2>\n\n\n\n

    An empty fuel tank is an obvious, yet sometimes overlooked, cause of a car shutting off while driving. Fuel is the engine\u2019s power source, and losing fuel can cause the engine to stall or stop.<\/p>\n\n\n\n

    If you have an OBD-II scanner, you could diagnose the problem using the trouble codes it displays. It\u2019s more difficult to get a good read if your car shuts off occasionally, though.<\/p>\n\n\n\n

    That\u2019s why your best bet is to get a mechanic to take a look at your car. With a series of diagnostic tests, an experienced mechanic can identify where the problem originated and which parts need to be repaired or replaced to get it up and running.<\/p>\n\n\n\n

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