Need Assistance? (Se Habla Espanol) Call or Chat Online

Select by Category

Select by Brand

Get Email Exclusives

Sign up for email updates on the latest exclusive offers

Jeep Grand Cherokee Oil Filler Cap

How to Detect the Causes behind Jeep Grand Cherokee Oil Filler Cap Problems

Your Jeep Grand Cherokee oil filler cap seals fuel inside the reservoir. Because of its relatively small size, you may think that this component is not important. That's not true. You must realize that this cap plays a huge part in improving your gas mileage. Without it, your gasoline won't last for miles. That's why you must act quickly when your gas cap begins to show signs of failure. Get ready to do some troubleshooting to find out what causes your cap to malfunction.

Minor problems

Minor issues involve an improperly installed oil filler cap. When you're in a hurry, you tend to forget to tighten the cap firmly. A loose gas cap usually turns the "Check Engine" light on. But there's a more efficient way that can help you verify if the problem is really coming from the oil filler cap. You need to use an automotive scan tool. Simply plug it to the outlet under your vehicle's dashboard. Wait for a few minutes until you see the code flashed on the screen. If you see the error code "Po44o," it means that your gas cap is loose. In this case, you just need to tighten the cap to fix the issue.

Severe problems

Fuel leak is perhaps the most serious problem you'll ever experience with a broken oil filler cap. Leak is often caused by a missing cap. This happens when the cap is loose, and you're not aware of it. Gradually, the cap will come off from its mounting. To check, you must open your hood. Slowly twist the cap to feel if it's tightly secured to the oil reservoir or not. Touch the other components inside the hood compartment as well to detect oil seepage. Replace your damaged cap and wipe off oil residue. Remember, fuel leak is very dangerous; it can initiate fire.

Other costly problems

A damaged oil filler cap has long-term effects and one of these can affect your budget in a very bad way. If you don't replace broken cap, you just let yourself spend plenty of cash for gallons of fuel you're not able to use. Gasoline is a highly volatile liquid that evaporates and escapes in the atmosphere through the cracks and holes of a bad fuel cap. To prevent this, inspect your cap regularly. Take it out of the vehicle to thoroughly examine its condition.

Jeep Grand Cherokee Oil Filler Cap Bestsellers View more

  • Four Ks to Remember to Protect Your Jeep Grand Cherokee Oil Filler Cap from Damage

    Cars parts, no matter how big or small they are, need your utmost care. By maintaining them, you can be certain that they will function properly for a very long time. One of these components that require extra safeguarding is your Jeep Grand Cherokee oil filler cap. It's small and delicate, hence it easily gets damaged. To protect it from harsh elements, here are the three Ks that you should strictly follow:


    Keep it clean.

    Dirt and oil can accumulate in your oil filler cap. These contaminants do not only make your cap look horrible, they can also initiate corrosion. To make your oil filler cap squeaky clean, use petroleum-based lube. After unscrewing the cap, place it on a clean surface and apply the lube all over. Wipe off dirt and grease with a clean rag. Do this very four months to keep your gas cap dirt free.


    Keep it tight.

    The cap has a screwing mechanism used to keep it securely attached to the fuel reservoir. Unfortunately, this mechanism fails over time all because of mechanical vibrations and corrosion. When the cap becomes loose, it might pop out of the container and get lost. To prevent such mishap, you should make it a habit to retighten your cap every once in a while. You'll know that the gas cap is properly tightened when you hear three clicks after pushing it to the fuel port of the gas container.


    Keep it rust-free.

    Since your gas cap is always exposed to air and moisture, oxidation is inevitable. But there are ways that can help you clear away rust efficiently. All you need is to buy a 120-grit sandpaper. Scrape off rust slowly by sanding the cap using small circular movements. After that, apply an anti-rust agent all over the cap to inhibit future corrosion.


    Keep it fresh and new.

    Expect that your oil filler cap will eventually fail after years of service. Don't worry. It's a natural thing and there's nothing you can do to make it stop. The best thing that you can do is to install a new cap when you see that it is deemed necessary. A new oil filler cap can be bought at a very low price, so you don't have to fret about the cost.