Most of the fuel pumps are designed to operate within a broad temperature bracket, from -40°F to 194°F (-40°C to 90°C), thus having the ability to operate in almost all types of weather conditions. However, extreme temperatures certainly have an effect on performance and life. During low temperatures, the fuel thickens and the workload on the pump increases; this sometimes results in slow starts. According to the SAE, cold temperatures raise the viscosity of fuel, and that fact demands more power from fuel pumps, which reduces its lifespan as high as 10% in extremely cold regions.
As compared to cold temperature, extreme hot temperatures can also be critical for the efficiency of the fuel pump. During hot weather conditions, the fuel pump is usually operated at higher temperatures, which may cause overheating when the fuel inside the fuel tank becomes low. Fuel cools the pump, and a quarter tank or more is important to avoid overheating. Bosch, a top-rated fuel system manufacturer, indicates that fuel pumps may degrade in efficiency up to 15% from continuous high temperatures without sufficient fuel for cooling, which shortens the wear life and diminishes overall performance.
Other factors include fuel quality and tank insulation. For instance, high temperatures can make ethanol-blended fuels much more volatile with vapor lock and increased load on the pump. Most automotive experts recommend that in continuous warm climates, the fuel pump should be replaced by one that has higher heat resistance for a more effective means of withstanding the extreme temperature.
Moreover, with a superior quality Fuel Pump investment, one is guaranteed to have durability for extreme temperatures, since the high-quality ones are built to withstand variable conditions easily. People who live in extreme climates can also make sure the fuel pump works during all seasons with regular maintenance and being mindful about the habits of putting fuel in their vehicles.