![]() ![]() The accuracy of the mass airflow sensor is going to be critical to making sure that your engine runs properly. That way the vehicle can run efficiently because it will have a proper air-to-fuel ratio. The mass airflow sensor is then going to send out a little signal that goes out to the car’s computer and it’s gonna say you need to match this amount of fuel to this amount of air. Faulty or Failing Mass Airflow SensorĪ mass airflow sensor is supposed to measure the amount of volume and density of the air getting drawn into your engine. You will probably see an ”check engine light” and you will have to restart it before starting the car again. Install the new cam position sensor and tighten the bolts, but don’t overdo it because the cam position sensor is made out of plastic and you don’t want to crack it.They only use tiny amounts of electricity, and any little piece of dirt will make them work incorrectly. Spray the connector with an electrical cleaner.Take out the old cam position sensor by removing the two bolts (usually a 10-millimeter socket).Get a new cam position sensor on for your vehicle made and model.If your car dies while you do this then your cam position sensor is bad and you need to replace it. Grab a rubber hammer or a steel hammer wrapped with a cloth and gently hit the cam position sensor.Once you locate the cam position sensor, start your vehicle and keep it running.On most vehicles, the cam position sensor is located on the backside of the engine and it looks exactly as in the image shown above. If the scan tool shows an error code P0340, you have a bad cam position sensor and it is making your car die and then restart while driving. Connect the scanner to your car computer and turn the scan tool on.In order to check if your cam position sensor is bad, you will need a scan tool ( you can get one on ).Ĭheck Price on Amazon How To Check For a Bad Cam Position Sensor and Replace It If your car dies while driving and then restarts on its own, it could be because of a bad cam position sensor. This will also trigger a misfire engine light. In case of an engine misfire, there is not a sudden burst of energy that is going to move the reluctor ring and the vehicle computer is going to know that there’s something wrong with that cylinder and can cause your vehicle to die while running and then restart. This movement is monitored by the vehicle computer. The reluctor ring is attached to the crankshaft and every time there is combustion in the cylinder, the reluctor ring is pushed just a little bit. Every time the spark plugs ignite the fuel in the cylinder and move the piston down as a result, that’s going to speed up the reluctor ring. ![]() A severe misfire will prevent a vehicle from running properly. Engine MisfireĪn engine misfire can cause your vehicle to die while driving and then restart on its own. ![]() It’ll just die when you go on a higher speed and then restart. When you don’t have enough fuel pressure, the car won’t run right, especially at higher speeds.
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