![]() If the fuel pump relay has an issue while the vehicle is operating it will cut off power to the fuel pump, which will cause the engine to stall. One of the first symptoms of an issue with the fuel pump relay is an engine that suddenly stalls. Usually a bad or failing fuel pump relay will produce a few symptoms that can alert the driver of the issues. As the fuel pump relay controls power to the fuel pump, any faults with it can cause issues with the fuel pump, which can cause drivability problems for the vehicle. The fuel pump relay is usually controlled by the ignition or Powertrain Control Module, and when switched on, will provide current to the fuel pump so that it may function. It is often found in the fuse box located in the engine bay and functions as the primary electronic switch that controls power to the fuel pump. The fuel pump relay is an electronic component that is found on virtually all vehicles equipped with an internal combustion engine.
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