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Written by
Michael Chadwick Beyond the wrenches and oil changes, Michael enjoys off-roading adventures, testing the resilience of various vehicle models. Michael Chadwick
September 15, 2023 / Reading time: 5 minutes
Edited by
Amelia Clayton In her free time, Amelia enjoys mentoring aspiring mechanics and sharing her knowledge with the next generation.
Amelia Clayton
This is why you can trust us
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We adhere to editorial integrity are independent and thus not for sale. The article may contain references to products of our partners. Here's an explanation of how we make money.
Why you can trust us
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Your Motor Guide was founded in 2022 and has a long track record of helping people make smart decisions. We have built this reputation for many years by helping our readers with everyday questions and decisions. We have helped thousands of readers find answers.
Your Motor Guide follows an established editorial policy. Therefore, you can assume that your interests are our top priority. Our editorial team is composed of qualified professional editors and our articles are edited by subject matter experts who verify that our publications, are objective, independent and trustworthy.
Our content deals with topics that are particularly relevant to you as a recipient - we are always on the lookout for the best comparisons, tips and advice for you.
Editorial integrity
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Your Motor Guide operates according to an established editorial policy. Therefore, you can be sure that your interests are our top priority. The authors of Your Motor Guide research independent content to help you with everyday problems and make purchasing decisions easier.
Our principles
Your trust is important to us. That is why we work independently. We want to provide our readers with objective information that keeps them fully informed. Therefore, we have set editorial standards based on our experience to ensure our desired quality. Editorial content is vetted by our journalists and editors to ensure our independence. We draw a clear line between our advertisers and editorial staff. Therefore, our specialist editorial team does not receive any direct remuneration from advertisers on our pages.
Editorial independence
You as a reader are the focus of our editorial work. The best advice for you - that is our greatest goal. We want to help you solve everyday problems and make the right decisions. To ensure that our editorial standards are not influenced by advertisers, we have established clear rules. Our authors do not receive any direct remuneration from the advertisers on our pages. You can therefore rely on the independence of our editorial team.
How we earn money
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How can we earn money and stay independent, you ask? We'll show you. Our editors and experts have years of experience in researching and writing reader-oriented content.Our primary goal is to provide you, our reader, with added value and to assist you with your everyday questions and purchasing decisions.You are wondering how we make money and stay independent. We have the answers. Our experts, journalists and editors have been helping our readers with everyday questions and decisions for over many years. We constantly strive to provide our readers and consumers with the expert advice and tools they need to succeed throughout their life journey.
Your Motor Guide follows a strict editorial policy, so you can trust that our content is honest and independent. Our editors, journalists and reporters create independent and accurate content to help you make the right decisions. The content created by our editorial team is therefore objective, factual and not influenced by our advertisers.
We make it transparent how we can offer you high-quality content, competitive prices and useful tools by explaining how each comparison came about. This gives you the best possible assessment of the criteria used to compile the comparisons and what to look out for when reading them. Our comparisons are created independently of paid advertising.
Your Motor Guide is an independent, advertising-financed publisher and comparison service. We compare different products with each other based on various independent criteria.
If you click on one of these products and then buy something, for example, we may receive a commission from the respective provider. However, this does not make the product more expensive for you. We also do not receive any personal data from you, as we do not track you at all via cookies. The commission allows us to continue to offer our platform free of charge without having to compromise our independence.
Whether we get money or not has no influence on the order of the products in our comparisons, because we want to offer you the best possible content. Independent and always up to date. Although we strive to provide a wide range of offers, sometimes our products do not contain all information about all products or services available on the market. However, we do our best to improve our content for you every day.
Thousands of readers trust us every year
Written by
Michael Chadwick Beyond the wrenches and oil changes, Michael enjoys off-roading adventures, testing the resilience of various vehicle models. Michael Chadwick
Edited by
Amelia ClaytonAmelia, another talented mechanic from our team, is the resident auto doctor. With years of experience under her belt, she's the go-to expert for diagnosing and fixing car issues. In her free time, Amelia enjoys mentoring aspiring mechanics and sharing her knowledge with the next generation.
September 15, 2023 / Reading time: 5 minutes
This is why you can trust us
We adhere to editorial integrity are independent and thus not for sale. The article may contain references to products of our partners. Here's an explanation of how we make money.
Why you can trust
us
×
Your Motor Guide was founded in 2022 and has a long track record of helping people make smart decisions. We have built this reputation for many years by helping our readers with everyday questions and decisions. We have helped thousands of readers find answers.
Your Motor Guide follows an established editorial policy. Therefore, you can assume that your interests are our top priority. Our editorial team is composed of qualified professional editors and our articles are edited by subject matter experts who verify that our publications, are objective, independent and trustworthy.
Our content deals with topics that are particularly relevant to you as a recipient - we are always on the lookout for the best comparisons, tips and advice for you.
Editorial integrity
×
Your Motor Guide operates according to an established editorial policy. Therefore, you can be sure that your interests are our top priority. The authors of Your Motor Guide research independent content to help you with everyday problems and make purchasing decisions easier.
Our principles
Your trust is important to us. That is why we work independently. We want to provide our readers with objective information that keeps them fully informed. Therefore, we have set editorial standards based on our experience to ensure our desired quality. Editorial content is vetted by our journalists and editors to ensure our independence. We draw a clear line between our advertisers and editorial staff. Therefore, our specialist editorial team does not receive any direct remuneration from advertisers on our pages.
Editorial independence
You as a reader are the focus of our editorial work. The best advice for you - that is our greatest goal. We want to help you solve everyday problems and make the right decisions. To ensure that our editorial standards are not influenced by advertisers, we have established clear rules. Our authors do not receive any direct remuneration from the advertisers on our pages. You can therefore rely on the independence of our editorial team.
How we earn money
×
How can we earn money and stay independent, you ask? We'll show you. Our editors and experts have years of experience in researching and writing reader-oriented content.Our primary goal is to provide you, our reader, with added value and to assist you with your everyday questions and purchasing decisions.You are wondering how we make money and stay independent. We have the answers. Our experts, journalists and editors have been helping our readers with everyday questions and decisions for over many years. We constantly strive to provide our readers and consumers with the expert advice and tools they need to succeed throughout their life journey.
Your Motor Guide follows a strict editorial policy, so you can trust that our content is honest and independent. Our editors, journalists and reporters create independent and accurate content to help you make the right decisions. The content created by our editorial team is therefore objective, factual and not influenced by our advertisers.
We make it transparent how we can offer you high-quality content, competitive prices and useful tools by explaining how each comparison came about. This gives you the best possible assessment of the criteria used to compile the comparisons and what to look out for when reading them. Our comparisons are created independently of paid advertising.
Your Motor Guide is an independent, advertising-financed publisher and comparison service. We compare different products with each other based on various independent criteria.
If you click on one of these products and then buy something, for example, we may receive a commission from the respective provider. However, this does not make the product more expensive for you. We also do not receive any personal data from you, as we do not track you at all via cookies. The commission allows us to continue to offer our platform free of charge without having to compromise our independence.
Whether we get money or not has no influence on the order of the products in our comparisons, because we want to offer you the best possible content. Independent and always up to date. Although we strive to provide a wide range of offers, sometimes our products do not contain all information about all products or services available on the market. However, we do our best to improve our content for you every day.
Table of Contents
Engine Problems can present themselves in several ways. One of the most common ways to do so is for you to experience a sudden loss of power or for your car to not start entirely. There might be many reasons for this, including the fuel system, the air intake system, or even a low battery level. However, in this article, we will be focusing on fuel systems. Particularly, we will be looking into why your car keeps blowing the fuel pump fuse.
The car keeps blowing the fuel pump fuse due to several reasons. A fuse protects other components in case of surge currents. Hence, events that lead to a rise in current ultimately blow your fuse. Events such as short-circuiting, overloading the fuel pump, broken fuel pump relay, or even an old fuel pump can cause a spike in the current. A quick fix is to just replace the fuse. However, since it is likely to blow up again, it is important to investigate and remedy the root cause.
When your fuel pump fuse blows out, then the connection to the fuel pump is severed. This means that effectively the fuel pump stops working. Thus, you will have trouble starting the car back up. On the other hand, if your car is already running, then the engine might sputter and come to stop as if it suddenly ran out of fuel. At the same time, your fuel gauge will show you still have fuel left. If you have already experienced one of these, there is a high chance that your fuel pump’s fuse has been blown. Read on to find out more about why it blew and how you can fix it.
Short-circuiting or Grounding of the wires
A short circuit is caused when the wire is kind of connected back onto itself. It causes a very low resistance path for the current. This is also known as grounding sometimes as the wires get directly connected to the ground terminal without any resistance in between.
Since the resistance is low, the current values are way higher leading to your car’s fuse being blown. Short-circuiting is one of the most common reasons for any fuse blowing up. This generally occurs when your wires are exposed in some way or form. While it is rare, it can happen during some electrical/mechanical maintenance or due to some debris.
There are two ways to solve this. The first method is to use the multimeter through the length of the fuel pump circuit and identify where the short circuit is. This can be rather painstaking. Alternatively, you can create your own circuit with new wires for the fuel pump. This will require some electrical knowledge and a circuit map of the car.
Since this can be a bit technically challenging, you might want to take the car to the nearest dealership.
Impurities in the fuel
If there are impurities in the fuel, the pump will have to use greater force to push the fuel to the injectors. This can be caused by a clogged fuel filter too. This high amount of torque required by the pump gives a sudden rise to the current. It will always be produced as long as the impurities aren’t removed. This is why your car keeps blowing the fuel pump fuse.
Impurities in the fuel may also lead to a reduction in performance and an increase in emissions. This could be one way to confirm the diagnosis. Another way to check is by using a multimeter and measuring the amount of current drawn by the fuel pump during operation. If the fuel pump is demanding a high value of current (compared to the manufacturer’s recommendations), then it is requiring a higher load than usual. This means that the fuel lines are probably clogged.
To fix this problem, you might want to flush the fuel tank completely and fill in fuel from a trusted source. Moreover, if the fuel filter is already clogged, then you might want to clean/replace it too! Once these steps are performed, the car should be able to start again.
To prevent this, all you need to do is fill your fuel always from a trusted gas station and ensure regular maintenance is done of your fuel filter.
Faulty fuel pump relay
A relay is something that controls the switching of various components in the car. If the relay is broken, there is a chance that the fuel pump does not get turned on properly when needed. Sometimes, this can lead to a spike in current as well. Because of this, your car keeps blowing the fuel pump fuse.
To identify if this is the problem, you need to take out the fuel pump relay from the fuse box and test it with the help of your car’s battery and multimeter. If the resistance between the prongs is not zero or almost zero, then there is possibly a problem with the relay.
The simple solution in this case is to replace the entire relay and you should be back on the road in no time.
Broken or old fuel pump
Finally, the last reason why your car keeps blowing the fuel pump fuse might be because your fuel pump is just old and worn out. Over time, because of impurities in the fuel, clogged fuel filters, and just normal wear and tear, the fuel pump starts losing its edge. This causes the fuel pump to exert more load than normal leading to a spike in current.
If you have ruled out all other problems in the list, then this is probably it. In such cases, you have no choice but to replace the entire fuel pump. Once done, your car should be functioning just like it used to.
Final Thoughts
It can be quite annoying when a part of your car keeps failing repeatedly. At such times, it is important to stay calm and realize that this is part of a deeper problem. Hopefully, this article gave you some insight into why your car keeps blowing the fuel pump fuse. Solving these problems often requires some basic electrical engineering know-how and a multimeter.
If you are doing the repairs at your home, remember to wear gloves to prevent any accidents. However, if you are not feeling confident, you may want to take it to the nearest mechanic. Preferably the authorized dealer since they would always have the electrical diagrams of the car at hand. With any luck, you won’t have to replace a fuel pump fuse ever again after reading this article.
Written by
Michael Chadwick
Member of our editorial team
More from the author
Michael is a seasoned car mechanic, working hands-on in a busy auto repair shop. His expertise in car maintenance and repair is second to none. Beyond the wrenches and oil changes, Michael enjoys off-roading adventures, testing the resilience of various vehicle models.
Edited by
Amelia Clayton
Member of our editorial team
