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Saturn Vue Fuel Tank Cap

How to Tell if Your Saturn Vue Fuel Tank Cap is Failing

Your Saturn Vue fuel tank cap is just a small piece of device, yet it does a huge amount of service. When it becomes severely damaged, your car may suffer from poor performance and low gas mileage. That's why it is very important to pay close attention to this component and observe its condition every once in a while. When it starts to show some symptoms of failure, get ready to perform some of these troubleshooting steps.

Error codes

The easiest way to diagnose tank-cap-related problems is by plugging your automotive scan tool. This electronic device has the ability to detect current problems in your vehicle. Simply plug this tool to the outlet found under the dash. Wait for a few minutes to allow the scanner process the data. When you see the error code "Po44o," it means that your fuel tank cap is loose. But this isn't the only code that tells you you're having a problem with your cap. There are other codes to watch out for that may indicate more serious problems like broken gas seals and gas leaks. Therefore, you should not stop there. Continue with the other troubleshooting steps.

Gas smell

The prevalent smell of gasoline is perhaps the most obvious sign of tank cap failure. It happens when the cap goes completely missing or when the tank seal becomes torn. In this case, you need to pop the hood open to take a closer look at the fuel tank. Remove the cap and inspect it for physical damage such as cracks and dents. Put the cap back and make sure that it is tight and sealed. If you can still smell gasoline, it means that your cap is broken, hence must be replaced immediately.

Poor gas mileage

Gasoline easily turns into gas because it is a highly volatile substance. When you see that your cap is full of holes and cracks, you are at risk for poor gas mileage. Gasoline can escape into the atmosphere if the cap is damaged. Because of that, you'll experience a sudden decrease in your fuel. If you keep on experiencing this even if you haven't changed any of your driving habits, it's high time to replace your fuel tank cap.

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  • Five Care Tips for Your Saturn Vue Fuel Tank Cap

    The Saturn Vue fuel tank cap is the component that is responsible in keeping your fuel safe and uncontaminated inside the reservoir. When this small cap incurs damage such as cracks and dents, your vehicle may suffer from a number of problems that can greatly affect its performance. In order to prevent such fuel tank issues, you need to perform the following maintenance tips. These are tried and tested ways that can make your tank cap last your car's lifetime.


    Don't skip on maintenance.

    Be serious about taking care of your fuel tank cap, because this component is extremely prone to damage. Inspecting the cap regularly is important to detect cracks and fractures early. This way, you can replace the broken cap immediately to prevent more serious problems.


    Keep your tank cap tightly closed.

    Gasoline will continue to escape into the atmosphere if your cap is not firmly closed. Just imagine how much fuel you're going to lose in a year if you do not know how to place the cap properly. To ensure taut seal, press or twist the cap firmly. Do this as often as possible because there's a tendency for the cap to loosen up due to extreme vibration.


    Scrape off rust from your tank cap.

    Rust on your tank cap can spread onto other metal components in your vehicle. What's worse is that it can contaminate your fuel. That's why it's very important to watch out for rust buildup on your cap. Remove it by spraying penetrating lube and letting it soak for a few minutes. After that, scrub off rust with a wire brush.


    Replace worn-out gasket and seals.

    Change your gaskets regularly to prevent fuel leaks. Rubber seals are available in the market at very affordable price, so there's no need for you to think twice before buying. Before installing the gaskets, apply a liberal amount of grease first. Grease increases the sealing ability of rubber gaskets to keep them tightly attached to the fuel tank opening.


    Know when to change your tank cap.

    When your cap looks deteriorated already, it's time to change it. If you still insist on using a worn-out, corroded tank cap, you'll just make the problem worse. Give up on repairing an extremely damaged cap. Buy and install a new one instead.