![]() When you replace your fuel pump fuse with a larger gauge fuse, the chance of blowing it again is higher. Do I need a bigger fuse if it keeps blowing? Your car starts to spit and sputter when revving up the engine.The car runs poorly and a lack of progress despite gas being used.Loss of power, sputtering or the engine pulling hard to start.What are the signs you need a new fuel pump? A blown fuse inside of the engine compartment can cause a fire and should be dealt with as soon as possible because of its high risk to the car. Mold and bacteria from damp walls can also cause increased powdery deposits in fuses which may lead to short-circuiting or arcing within them.Ī blown fuse can cause a fire if it is located in the engine compartment and starts overheating. If the wiring has moisture in it, that can act as an oxidant leading to combustion of the wire insulation and further to overheating of the wires themselves. It is possible for a blown fuse to cause a fire. You may also want to try replacing that outlet with a new one. If the meter reads anything other than zero ohms, then it means that it has found an active circuit. You will notice one of the terminals giving off a reading according to its different sizes. In addition, you should use the other lead of your meter to touch each terminal in succession. All that you need to do is unplug the suspected fuse, take a multimeter and place one lead of the meter on the disconnected side of the wire. It is relatively easy to test whether or not a fuse is blown. How can you tell if a plug fuse is blown? The pressure sensor causes the engine to cut out if it senses that no fuel is getting through on its return trip. When the fuel pump’s relay gets a continuous power supply, the output of the relay closes and breaks contact with the load. ![]() If all else fails, we recommend a diagnostic scan of your car’s computer system. If you’re still having problems, have your fuel system checked for leaks and the fuel filter replaced if necessary. ![]() A loose ground wire under the hood or a dirty ground connector will also cause the fuse to blow. Grounding problems can cause fuel pump issues too! Check your vehicle’s grounding system and repair where necessary. To prevent future corrosion, use some dielectric grease on the connectors to help seal them against moisture and dirt. If you see any corrosion, try cleaning it off with a wire brush and then lubricating it with dielectric oil. If there is a bad fuse and it has been replaced, check to make sure the replacement fuse isn’t blown.Ĭheck for corrosion on electrical wires. If you find that your fuel pump fuse keeps blowing, consider the following steps:Ĭheck all fuses in the car for damage or a loose connection. How do you fix a fuse that keeps blowing?įuel pump fuses are a common problem for many drivers. Gasoline engines produce sparks when they are running which could short out some electrical components if not properly polarized.This includes parts of the electrical system such as sensors and resistors that are susceptible to corrosion. If there is water in your gas tank, particles from the water will collect on components making them less effective.The fuel pump fuse may be damaged, a loose wire or bad wiring can cause the fuse to blow.The top 3 reasons for a fuel pump fuse keeps blowing are:.
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