Sensitive components in a fuel pump can lead it to operate incorrectly in extreme temperatures, therefore leading to failure. Fuel pumps are hydraulic solenoids that rely on both electrical and mechanical systems to maintain a very steady operating pressure of 40–60 psi or so for smooth engine performance. These systems can fail if heated or cooled too intensely.
Fuel pump can overheat in hot climates The National Highway Traffic Safety Administration once reported that vapors can form inside the pump due to temperatures above 90°F (32°C), a condition known as vapor lock. This creates the risk that the pump cannot supply fuel effectively, resulting in a stalling or shutting down of the engine altogether. Neither of those amounts to a healthy pump: An overworked unit develops heat in its bearings and mixtures of oil and coolant — as little as 10 minutes at high temps can damage internal wiring or melting the seals and shorten pump life by 20–30%.
However, Old Man Winter below -20°F (-29°C) is a different animal! When fuel has a chance to thicken or even freeze, that puts more strain on the motor of your pump. Canadian Automobile Association study on vehicle exposure to extreme cold for long periods of time found fuel pump failures were 15 percent more likely than to vehicles stored in controlled temperatures. Even Frost accumulated in between input and output line of fuel lines or filters will make the matter worse since it can easily burn out the pump.
For example, sub-zero temperatures during the 2021 Texas winter storm resulted in mass vehicle failures. Numerous drivers reported frozen fuel lines and cool weather made for inadequate lubrication that caused the pumps to fail. Winterised fuels are recommended to avoid this, mechanics stressed.
In fact, it is possible to enable a pump—regardless of how extreme the conditions may be—to live beyond its normal shelf life through preventive measures. In hot climates, running with no less than a quarter tank of fuel keeps the pump submerged and cool to help mitigate overheating issues. For cooler areas, as well as in the winter months when sticking to lower freezing things, use gas ingredients.
Pumps from Kemso are high-quality pumps that are designed specifically to meet stringent needs. Consoles have a durable build and premium materials that provide consistency even in temperature extremes.
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