![]() ![]() Air Intake Problems Malfunctioning Mass Air Flow Sensor (MAF Sensor) Replace the Fuel Filter with an OEM Replacement. Make sure your fuel filter is in good shape. When a fuel filter gets clogged up, dirty or old, it can cause a car to run poorly and then shut off. Some symptoms of a faulty fuel pressure regulator include random fluctuations in RPM while at idle, hard starting and stalling when cold, and lack of power while driving. Faulty Fuel Pressure Regulatorįuel pressure regulator failure can be caused by a defective fuel pump, causing the engine not to start or run properly. In worst-case scenarios, this means that you have a very bad car problem. When this light comes on, it means that you have an engine problem. This sensor is located at the fuel rail, and it is a part of your car’s warning system because when the pressure falls below a preset level, this sensor sends a signal to turn on your Check Engine Light or MIL (malfunction indicator lamp). If not, don’t worry because sometimes, even though the sensor works, it doesn’t always generate enough pressure to make more than 12 psi. You can determine whether your fuel pressure sensor is working by turning on your ignition (don’t start it) and checking if you see more than 12 psi of fuel pressure raise. If this is the issue, ask a mechanic to diagnose and repair the fuel injector for you. Faulty Fuel InjectorsĪ bad fuel injector can cause a car to run poorly and then shut off quickly. In case the fuel pump relay malfunctions, you would face a hard time starting your car, or while running, your car would suddenly stall out. Once your car starts running, this relay gets switched off. The way it works is that the engine computer provides a low-voltage signal through the fuel pump relay to activate the pump. The fuel pump must be switched on and off by the vehicle’s computer system or ECU (electronic control unit) to run the car. This could also be caused by electrical problems in certain cases however, we’ll stick to this point and assume that this problem is due to a bad or failing fuel pump. If it’s not able to do so, your car will have a tough time turning on. The fuel pump is responsible for providing the fuel to start the engine. And see if there is any fuel in it or not? Bad Fuel Pump Whenever you encounter problems related to starting of your car, make sure to give your as tank a look. Yeah, it might sound ridiculous, but this can be a potential reason if your engine shuts down after starting. Let us see these problems that are keeping your car from starting: 1. Malfunctioning Manifold Absolute Pressure Sensor (MAP Sensor).Malfunctioning Mass Air Flow Sensor (MAF Sensor).If your car starts fine but dies right after that, it might be due to the following problems: ![]() ![]() Reasons Your Car Starts Then Dies Right Away
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