Many Honda and Acura vehicles are manufactured these days with an electric fuel pump located inside the gas tank. The primary function is to deliver pressurized fuel from the fuel tank to the engine. The fuel is transported from the pump to the injectors which then sprays the fuel into the engine cylinders. These more sophisticated pumps not only offer the ability to measure fuel supply more accurately, but they also reduce engine fuel consumption. In the past, many vehicles were manufactured with a mechanical fuel pump, which functions by delivering fuel to the carburetor, but as time progressed and engine optimization advanced, mechanical pumps were replaced with electrical pumps to increase efficiency.
While electric fuel pumps may seem more innovative and are said to be safer than mechanical fuel pumps, they still come with a variety of drawbacks—such as engine stalling and non-start issues.
The Reason for the Stalling Issue and Non-start Issues
The foremost complaint among Honda and Acura consumers with these specific vehicles is engine stalling and non-start issues. Due to the issues with the electric fuel pump, the vehicle could potentially not start, or the engine could stall– despite the alleged efficiency of the system.
The primary reason behind this defect comes from the defective materials used to manufacture the impellers inside the fuel pump as well as their exposure to a solvent drying agent during their production. These factors can cause the low-density impellers to absorb fuel which in turn could cause the impellers to warp and/or crack. This leads to the possibility of the impellers striking and damaging the fuel pump causing not only the pump, but other components of the engine to fail. Even if the fuel pump does not fail, the impeller deformation can lead to acceleration problems.
The List of Honda and Acura Affected Vehicles
Several Honda and Acura model vehicles are affected by this fuel pump defect. The issues have been noted primarily across 2018, 2019 and 2020 vehicles. If you have one of the following Honda or Acura vehicles and you are experiencing issues with starting or stalling, you are not alone, and your vehicle could be a lemon!
Acura
- 2018-2019 Acura NSX
- 2019 Acura RDX
- 2019 Acura RLX
- 2019 Acura RLX Sport Hybrid
Honda
- 2018-2019 Honda Accord
- 2018-2019 Honda Civic Hatchback
- 2018-2019 Honda Civic Type R
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