It may cause stalling, especially in heavy traffic, since the faulty fuel pump cannot deliver the fuel properly to the engine. The fuel pump’s purpose is to transfer fuel to the engine at a steady pressure, normally in the range of 40-70 psi, to maintain smooth running. The malfunctioning pump often loses its pressure at irregular periods, which affects the proper air-fuel mixture in the combustion process. This inconsistency often results in stalling of the engine, particularly on stop-and-go traffic situations where demand for precision in fuel delivery is greater.
In heavy traffic, engines quite often work on lower RPM; it means that they can be more sensitive to fluctuations of fuel pressure. According to a 2021 Bosch Automotive Systems study, 25% of stalling in urban driving conditions is attributed directly to problems with the fuel pump. For example, in one case involving a 2018 Toyota Camry, the car stalled multiple times in traffic due to a failing pump unable to maintain a good enough pressure during prolonged idling periods.
Overheating is another common issue with faulty pumps in heavy traffic. When the fuel tank is low, the pump is deprived of fuel’s cooling effect, causing it to overheat. AAA guidelines recommend keeping the fuel level above 1/4 tank to prevent pump overheating and stalling, which is particularly crucial in summer months when ambient temperatures rise above 90°F (32°C).
Electrical issues, such as a failing fuel pump relay or corroded wiring, also cause stalling. Poor wiring can result in voltage drops that interfere with the operation of the pump. According to a study conducted by the Auto Care Association in 2019, 15% of electrical problems in vehicles over 8 years old involve the fuel pump, making it one of the leading causes of stalling. This problem heightens during heavy traffic because the pump does not get any rest while running.
“An engine is only as reliable as the system feeding it fuel,” said automotive technician Robert Mason. Drivers often report that their vehicles experience hesitation or loss of power before stalling, clear signs of inconsistent fuel flow. Misfires caused by a failing pump can exacerbate this, leading to 10-15% higher emissions, as noted in a 2022 report by Consumer Reports.
Replacing a faulty fuel pump ensures consistent fuel delivery, preventing stalling in critical situations like traffic. The cost of replacing a pump ranges from $400 to $700, depending on the vehicle, but it avoids potential accidents caused by unexpected stalling. For reliable and durable replacements, visit Fuel Pump to ensure your vehicle remains dependable in all driving conditions.