The Fuel Pump Driver Module or the Modular Reservoir Assembly controls the voltage delivered to a vehicle’s fuel pump. By controlling the voltage, the module maintains optimal fuel pressure and fuel delivery to the engine throughout its full operating range. In older vehicles, (below 2005), the fuel pump driver module is located near or on the fuel pump. For new car models, this device is located under the seat or on the frame near the spare tire. When your car fuel pump driver module is bad, its symptoms will manifest through engine performance. Some of the signs of a faulty fuel pump driver module include a smoky start-up, uneven running while idling, difficulty in starting the engine misses and hesitation when starting the engine, and power surges when you reverse. If your car shows the following symptoms, then that is a sign of a failing fuel pump driver module. You can still drive your car with a bad fuel pump module. However, you will drive your car only for a short period. If the problem is not fixed on time, then your car will stall. Most new car models are very sensitive and will stall almost immediately when the fuel pump module fails. So, if your car starts showing signs of a bad fuel pump module, take it to the mechanic immediately for a check-up and repair before it stalls.

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