A Fuel Pump that keeps on clicking usually signifies a problem with either the fuel system or its electrical parts. The clicking sound often emanates from the relay, showing that the pump is being turned on and off time after time. The root cause needs to be diagnosed in order to maintain proper fuel delivery and engine performance.
Clicking should always point to the fuel pump relay first. It operates the power supply to the pump and just clicks when the circuit is opened or closed. With the wear and tear of a relay, there can be fast clicking, which upsets the operation of the pump. Replacement of relays usually ranges from $10 to $30, which is pretty inexpensive for a first step. Indeed, the studies show that 25-30% of fuel system failures are related to the issues with the relay; these are also usually intermittent in nature.
Other causes for the clicking sound include loose or corroded electrical connections. When the wiring to the pump or relay is malfunctioning, it could result in the relay turning on and off continuously. Voltage is tested at the connector of the pump with a multimeter for the diagnosis. A correct reading gives the voltage as 12-14 volts when the ignition is turned “on”. Voltage below this range shows wiring issues that must be repaired or replaced.
Low fuel levels could be the cause. When the tank is almost dry, air pockets interfere with the functioning of the pump and lead to abnormal cycling. Keeping the tank full at at least 25% prevents this problem and ensures the pump remains submerged, reducing strain and preventing overheating.
Other possible causes are clogged fuel filters. While filters can stop debris from getting into the pump, once they are too clogged, they impede fuel flow and strain the pump. Regular changes in 15,000 to 30,000 miles maintain a smooth rate of fuel flow and eliminate pump overexertion.
Real-world examples point to the impact of unresolved clicking: In a 2021 recall involving over 50,000 vehicles, faulty relays led to pumps that clicked and clicked, causing power loss and inconsistent performance. For most drivers, replacing relays and sorting out wiring problems resolved the problem without having to replace entire fuel pumps.
Replacing a faulty pump with a high-quality option like Kemso Fuel Pumps ensures consistent operation and reduces the likelihood of similar issues. These pumps deliver reliable performance under various conditions and maintain the required fuel pressure, typically 40-60 psi, for smooth engine function.
For reliable solutions and expert advice, visit Fuel Pump. Prompt diagnosis and repair of clicking sounds prevent further damage and ensure optimal vehicle performance.