The fuel pump overheating can definitely cause one of the common failures seen in modern cars. Driving in very hot weather and in a car with any compromise to its cooling system often subjects the pump to high heat and stresses. According to a study conducted by AASA, 30 percent of all fuel pump failure is due to overheating or poor fuel cooling.
In the case of a fuel pump, overheating largely results from a very low fuel level inside the tank. The level of fuel affects the quantity available for cooling the pump. Fuel works in both ways: as the coolant and lubricant to the pump. When fuel inside the tank is lower than the prescribed level, then the pump may work hard for lack of fuel starvation, thereby heating up. For example, driving on a quarter tank or less often leads to the risk of overheating of the pump. This is especially true with higher-mileage, older cars in which the fuel pump has already seen a lot of wear and tear.
Another common cause of overheating is the malfunctioning fuel pump relay or poor electrical connections. If the relay does not supply the correct voltage, the pump will have to work harder, which increases the chances of overheating. A malfunctioning relay might not allow the proper power to reach the pump, which in turn keeps the motor at an extremely high temperature and will eventually burn out. This could lead to irregular fuel delivery, poor engine performance, and even complete fuel pump failure.
A good example is in a major automotive recall by a famous manufacturer, where the identification of overheating fuel pumps was a critical issue. More than 100,000 vehicles were recalled for repair. Overheating was directly pinpointed as the cause of pump failure. Experts recommend periodic diagnosis of the fuel system, not only to avoid poor cooling but also to allow the fuel pump to remain in healthy condition.
This is done practically by monitoring the temperature of the fuel pump and ensuring that the vehicle’s cooling system works well. Maintenance, such as checking the condition of the fuel tank and the cooling system, will help extend the life of the fuel pump. With proper maintenance, a fuel pump will last over 100,000 miles, especially if used with good quality fuel and within the optimum temperature range.
In the end, overheating can be very detrimental to the health of fuel pumps in general, more so when combined with either low fuel levels or some form of electrical malfunction. Replace your failing fuel pump before more serious damage occurs to ensure a smooth-running engine. Have your fuel pump serviced with the help of Fuel Pump today for high-quality replacements matched to your vehicle’s specific needs.