Instead of a scheduled replacement, it's best to replace the fuel pump when it shows signs of failure. These signs can include:
* Difficulty starting the car: The engine cranks but won't start, or it takes several attempts to start.
* Loss of power or sputtering: The engine hesitates or stumbles, especially under acceleration.
* Engine surging or stalling: The engine speed fluctuates unexpectedly, or the car stalls intermittently.
* Whining noise from the fuel tank: This is a less common but distinct sign of a failing pump.
* Check engine light: A diagnostic code related to the fuel system will often illuminate.
Instead of preemptive replacement, focus on preventative maintenance:
* Use high-quality fuel: Avoid consistently using low-grade fuel.
* Keep the fuel tank at least half full: This helps to cool the fuel pump.
If you experience any of the symptoms mentioned above, it's time to have your fuel pump inspected and potentially replaced. Ignoring these symptoms can lead to costly repairs or even stranded vehicle. A mechanic can diagnose the problem accurately and advise on the necessary repairs.