2016-2019 Acura ILX Fuel Pump: Recalls, Failure Symptoms, and Replacement Guide
This guide covers the critical fuel pump recalls, common failure symptoms, and what to check when buying a used fuel pump for your 2016-2019 Acura ILX.
- The 2019 Acura ILX has a major safety recall (NHTSA 21V-215) for fuel pumps that can seize, causing the engine to stall while driving.
- All 2016-2019 models are also under recall for a potential fuel tank defect that can cause an inaccurate fuel gauge reading, leading to unexpectedly running out of gas.
- Key failure symptoms include engine stalling, hesitation under acceleration, hard starting, and a loud whining noise from the fuel tank area.
- When buying a used pump, verify the part number (17045-TV9-A01 or 17045-TV9-A00) and be cautious with units from 2019 models due to the recall.
Known Issues, Recalls, and Technical Service Bulletins (TSBs)
The 2016-2019 Acura ILX is subject to two significant recalls related to the fuel system. It is crucial to check a vehicle's VIN on the Acura or NHTSA recall website to see if these recalls are open and have been completed.
Safety Recall: Fuel Pump Motor Failure (2019 ILX)
NHTSA Campaign ID: 21V-215 / Acura Service Bulletin: 21-012
Problem: On certain 2019 ILX models, the fuel pump motor impeller was manufactured improperly. This impeller can absorb fuel, swell, and deform over time, causing the fuel pump to seize and stop working.
Consequence: A seized fuel pump will prevent the engine from starting or cause it to stall while driving. An engine stall increases the risk of a crash. The check engine light may illuminate with Diagnostic Trouble Code (DTC) P0087, which indicates "Fuel Rail Pressure Too Low".
Solution: Acura dealers will replace the fuel pump motor free of charge. This recall is part of a massive campaign affecting millions of Honda and Acura vehicles with the same defective Denso-made fuel pump.
Safety Recall: Inaccurate Fuel Gauge (2014-2019 ILX)
NHTSA Campaign ID: H3U, Z3T
Problem: The fuel tank itself may be deformed, which can change the position of the fuel pump assembly inside it. This causes the fuel level float (the arm that measures the fuel level) to get stuck.
Consequence: If the float sticks, the fuel gauge will display an incorrect reading, often showing more fuel than is actually in the tank. This can lead to the vehicle unexpectedly running out of gas and stalling, increasing the risk of a crash.
Solution: Dealers will inspect the fuel tank and replace it if necessary, free of charge.
Symptoms of a Failing Fuel Pump
A failing fuel pump will struggle to supply the engine with a steady stream of fuel. This can cause a variety of symptoms, ranging from minor annoyances to critical failures.
- Engine Sputtering or Hesitation: The car may jerk or sputter, especially at highway speeds or when you press the accelerator. This happens because the weak pump can't keep up with the engine's demand for more fuel.
- Loss of Power: You may notice the car feels sluggish or weak when accelerating, climbing hills, or carrying heavy loads. The engine isn't getting the fuel it needs to produce full power.
- Difficulty Starting: The engine may crank for a long time before it starts, or it might take several attempts. A weak pump may not build enough initial pressure in the fuel lines for a quick start.
- Engine Stalling: The engine may stall unexpectedly, sometimes after running for a few minutes. This can be especially dangerous if it happens in traffic. As noted in the recall, this is a primary symptom of the 2019 ILX defect.
- Whining Noise from the Fuel Tank: A loud whining or humming sound from the rear seat area is a classic sign of a failing fuel pump motor. A healthy pump usually makes a very quiet hum when you first turn the key.
- Check Engine Light: A failing fuel pump can cause a lean running condition, which may trigger a check engine light. For the 2019 ILX recall, the specific code is often P0087 (Fuel Rail Pressure Too Low).
Buying a Used Fuel Pump for Your 2016-2019 ILX
Given the high cost of a new OEM fuel pump, a used unit from a reputable recycler can offer significant savings. However, due to the recalls, careful inspection and verification are essential.
Inspection Checklist:
- Verify Part Numbers: Ensure the part number matches your vehicle. The correct part number is 17045-TV9-A01, which replaces the older 17045-TV9-A00. Both will fit the 2016-2019 ILX.
- Check the Electrical Connector: Inspect the pins inside the connector. They should be straight, clean, and free of any corrosion or signs of overheating (discoloration, melted plastic).
- Examine the Housing: Look for any cracks or damage on the plastic housing of the pump module. A cracked housing can lead to fuel leaks.
- Inspect Fuel Line Ports: Check the inlet and outlet ports where the fuel lines connect. Ensure they are not cracked, broken, or have damaged retaining clips.
Pro Tip: For a 2019 ILX, it is safest to assume a used fuel pump has the recall defect unless the seller can provide proof the recall was performed on the donor vehicle. Sourcing a used pump from a 2016-2018 model avoids the specific impeller recall, though the fuel tank recall still applies to all years in this range.
Why Used OEM vs. New Aftermarket?
While cheap aftermarket fuel pumps are available, they often have a higher failure rate than original equipment parts. An OEM pump, even a used one, was built to Acura's specifications for fit, durability, and electrical compatibility. A low-quality aftermarket pump can fail prematurely, leaving you stranded and forcing you to do the repair all over again.
Cost Comparison
Prices can vary based on your location and supplier, but this provides a general cost expectation.
| Part Type | Estimated Cost |
|---|---|
| New OEM (Dealer/Online) | $400 - $580 |
| New Aftermarket | $100 - $250 |
| Used OEM | $50 - $100 |
| Shop Labor | $180 - $270 |
Replacement Overview
Replacing the fuel pump is a moderately difficult job that requires handling gasoline, which is a serious fire hazard. It is typically accessed from under the rear seat.
- Safety First: Disconnect the battery. Work in a well-ventilated area away from any open flames or sparks.
- Relieve Fuel Pressure: To prevent fuel from spraying out, the pressure in the fuel lines must be relieved. This can be done by pulling the fuel pump fuse and running the engine until it stalls, or by using a diagnostic tool to command the pump off.
- Access the Pump: The pump is located in the fuel tank. Access is usually gained by removing the rear seat cushion to expose an access panel on the vehicle floor.
- Disconnect and Remove: After removing the access panel, disconnect the electrical connector and fuel lines. A special tool may be needed to release the fuel line connectors. The pump module is held in the tank by a locking ring, which must be unscrewed (sometimes requiring a special tool) before the module can be lifted out.
- Installation: Installation is the reverse of removal. Be sure to use a new sealing gasket for the locking ring to prevent fuel leaks and fumes. After reassembly, cycle the key to the 'ON' position a few times to allow the pump to prime the system and check for any leaks before starting the engine.
Frequently Asked Questions (FAQ)
Can I just replace the pump motor instead of the whole assembly?
The recall for the 2019 ILX specifically involves replacing just the motor. However, most mechanics and DIYers find it easier and more reliable to replace the entire fuel pump module assembly, which includes the pump, sending unit, and filter sock. This ensures all related components are new and avoids the delicate work of disassembling the module itself.
Do I need to do anything after installing a new fuel pump?
No special programming is required. However, after installation, you should turn the ignition key to the 'ON' position (without starting the engine) for a few seconds and then turn it off. Repeat this 2-3 times to allow the new pump to build pressure in the fuel system before you attempt to start the engine. Always double-check for fuel leaks at the connections before finishing the job.
Will a bad fuel pump always cause a Check Engine Light?
Not always. A pump can be weak and cause drivability issues like hesitation or hard starting without setting a code. However, if the failure is severe enough to cause a significant drop in fuel pressure or a lean condition, it will likely trigger a code like P0087.
How can I test my fuel pump?
The most accurate way is to use a fuel pressure gauge connected to the fuel rail to measure the pressure while the engine is running. A simpler, though less precise, check is to listen for the pump to make a quiet 2-second humming sound from the gas tank area when you first turn the key to the 'ON' position. If you hear nothing, the pump may not be getting power or may have failed completely.
Technical Specifications
OEM Part Numbers: 17045-TV9-A01 17045-TV9-A00
In-tank fuel pump module assembly. Includes the electric fuel pump, fuel level sending unit, and fuel strainer.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Acura ILX:
- 🛍️ Shop This Part
- Known Issues, Recalls, and Technical Service Bulletins (TSBs)
- Safety Recall: Fuel Pump Motor Failure (2019 ILX)
- Safety Recall: Inaccurate Fuel Gauge (2014-2019 ILX)
- Symptoms of a Failing Fuel Pump
- Buying a Used Fuel Pump for Your 2016-2019 ILX
- Inspection Checklist:
- Why Used OEM vs. New Aftermarket?
- Cost Comparison
- Replacement Overview
- Frequently Asked Questions (FAQ)
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