Why does my fuel pump only work sometimes?
An electrically actuated pump may fail due to a mechanical or electrical malfunction. If the fuel pump in question is working intermittently; I would suggest a loose electrical connection.
Why is my fuel pump intermittent?
For some fuel pumps and in-tank modules, it can cause the bottom of the tank to come in contact with the bottom of the pump and restrict fuel pickup. This type of failure can be intermittent. If the connection has a high amount of resistance, it can cause the pump to run slowly or not at all.
How can you tell if your fuel pump is not working?
The absence of a particular noise could be a sign of a failed fuel pump. To test this, turn your vehicle’s key to the “ON” position, and have another person stand next to your vehicle’s gas cap. If the person hears a whining electronic noise, your fuel pump is working.
What happens when the fuel pump is not working properly?
If the fuel pump fails completely – to the point of not being able to provide enough fuel for the engine to run, the vehicle will refuse to start . The engine will still crank when the key is turned, but it will be unable to start due to the lack of fuel.
What makes a fuel pump stop working?
The three most common causes of fuel pump failure include: Fuel contamination: Fuel is jeopardized from corrosion, debris and moisture, which can all bring visible contaminants into the tank. Clogged strainers/filters: The aforementioned contaminants eventually clog critical components including strainers, filters and the fuel pump itself.
Why is my fuel pump failing?
The top reasons for fuel pump failure are contamination, overheating, and the gears in the the fuel pump wearing out over time. Rust, debris, and dirt are three common particles that can somehow enter the gas tank and be fed towards or through the intank fuel filter and possibly into the fuel pump.