Why Does My Car Rev Up When I Get Gas?

If you’ve ever noticed your car revving up when you get gas, you’re not alone. This is a common problem that can be caused by a number of factors. In this article, we’ll explore the most common causes of this problem and provide some tips on how to fix it.

Causes of Car Revving Up When Getting Gas

Vacuum leak: A vacuum leak can cause your car to rev up when you get gas because it allows unmetered air to enter the engine. This can cause the engine to run lean, which can lead to a number of problems, including increased emissions, decreased fuel economy, and engine damage.
Dirty throttle body: A dirty throttle body can also cause your car to rev up when you get gas. The throttle body is a valve that controls the amount of air that enters the engine. When the throttle body is dirty, it can become stuck in the open position, which can cause the engine to rev up.
Faulty idle air control valve: The idle air control valve (IACV) is a valve that controls the amount of air that bypasses the throttle body when the engine is idling. When the IACV is faulty, it can cause the engine to rev up when you get gas.
Faulty fuel injector: A faulty fuel injector can also cause your car to rev up when you get gas. Fuel injectors are responsible for delivering fuel to the engine. When a fuel injector is faulty, it can cause the engine to run lean, which can lead to a number of problems, including increased emissions, decreased fuel economy, and engine damage.

How to Fix Car Revving Up When Getting Gas

If you’re experiencing this problem, there are a few things you can do to try to fix it:

Check for a vacuum leak: You can check for a vacuum leak by listening for a hissing sound. If you hear a hissing sound, it’s likely that you have a vacuum leak. You can also use a smoke machine to find a vacuum leak. Smoke machines are available for rent at most auto parts stores.
Clean the throttle body: You can clean the throttle body with a throttle body cleaner. Throttle body cleaners are available at most auto parts stores.
Replace the idle air control valve: If the idle air control valve is faulty, you will need to replace it. IACVs are available at most auto parts stores.
Replace the fuel injector: If a fuel injector is faulty, you will need to replace it. Fuel injectors are available at most auto parts stores.

If you’re not comfortable performing any of these repairs yourself, you can take your car to a mechanic to have them diagnose and repair the problem.

Conclusion

If you’re experiencing this problem, it’s important to get it fixed as soon as possible. Revving up your car when you get gas can lead to a number of problems, including increased emissions, decreased fuel economy, and engine damage. By following the tips in this article, you can help to fix this problem and keep your car running smoothly.