If your pump is failing, it may not be able to keep up with this increased demand, starving your engine of fuel as it tries to accelerate. Accelerating requires more fuel, forcing your fuel pump to work harder. If you notice that your car often loses power when you try to accelerate from a stop, your fuel pump may be in trouble. Your Fuel Pump Might Be Failing if You Lose Power When Accelerating
#Bad fuel pump module symptoms drivers#
Some drivers may confuse this sign with the effects of dirty gas, but modern fuel standards make a failing fuel pump more likely. In the early stages of failure, this sputtering may only last for a minute or so before the engine returns to normal operation.
This interruption in fuel flow causes your engine to skip several power strokes, forcing the engine to sputter and jerk. This problem is caused when the fuel pump can’t deliver a smooth flow of fuel to the engine periodically, your engine receives only air when it was expecting to receive fuel. If you’re driving at freeway speeds and notice your engine sputter or jerk, you may have a failing fuel pump. You Might be Experiencing Fuel Pump Failure if Your Car Jerks or Sputters at High Speeds If you notice any of the common symptoms of fuel pump failure while you’re driving, you may need to have your fuel pump inspected and replaced. Symptoms of a Failing Fuel PumpĪlthough mechanical and electronic pumps fail for different reasons, the symptoms of failure are similar for both types of pumps. Any one of several different parts can malfunction and lead to fuel pump problems. Electronic pumps are typically linked to electronic control systems and contain multiple moving parts because of this increased complexity, these types of pumps are more prone to failure.
Most problems with mechanical pumps occur when the diaphragm is damaged in some way, throwing the pressure system off balance. Since mechanical pumps are driven directly by the motion of the engine and contain few moving parts, they tend to be reliable and relatively easy to diagnose and fix. Mechanical pumps are usually found in cars that use carburetors, and electronic pumps are usually used with fuel injection systems. Mechanical pumps run off of the motion of the engine a diaphragm mounted to the outside of the fuel tank expands and contracts, creating a low-pressure system that forces the fuel out of the tank and into the engine.Įlectronic pumps are typically located inside of the fuel tank and use electromagnetic motors to force fuel to the engine at high pressure. The fuel pump is a device that moves fuel from your tank to the engine, supplying the fuel at a constant pressure to ensure that your engine runs smoothly.ĭepending on the age of your vehicle, you may have either a mechanical or an electronic fuel pump, and, if you’re attentive, you can catch the symptoms of a failing fuel pump and have it repaired or replaced before it leaves you stranded on the side of the road. Your car’s engine needs a regular stream of fuel to keep it humming along.
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