Where is fuel pump relay located

In some vehicles, the car can start with the oil that remains in the galleys. If the engine is cold and the oil is thick, the vehicle can be started within a few minutes without any assistance from the fuel-pump relay. A light humming noise coming from the gas tank is a sign that the fuel-pump relay needs to be replaced. Sabah Karimi is a professional Web and print copywriter.

She specializes in several niches including travel, fashion, beauty, health, fitness, lifestyle and small business. Karimi has an educational background in business administration and marketing from the University of Wisconsin-Platteville.

Troubleshooting When your car does not start properly, you can conduct a fuel-injection relay test. Autoblog is partnering with YourMechanic to bring many of the repair and maintenance services you need right to you.

Get service at your home or office 7 days a week with fair and transparent pricing. We get it. Ads can be annoying. But ads are also how we keep the garage doors open and the lights on here at Autoblog - and keep our stories free for you and for everyone. And free is good, right? If you'd be so kind as to allow our site, we promise to keep bringing you great content. Thanks for that. And thanks for reading Autoblog. Engine stalls One of the first symptoms of an issue with the fuel pump relay is an engine that suddenly stalls.

Engine does not start Another symptom of a faulty fuel pump relay is an engine that does not start. No noise from the fuel pump Another symptom that may hint at an issue with the fuel pump relay is no noise from the fuel pump when the key is switched on. Looking for an OBD2 code reader to diagnose your check engine light? Check out dozens of great OBD2 scanners here Buy Now Autoblog may receive a share from purchases made via links on this page.

Pricing and availability is subject to change. Auto Repair Maintenance Ownership fuel pump. View More. Thank You Thanks for subscribing. The fuel pump relay gives the fuel pump power when it is time to build up fuel pressure in the rail.

Whenever you turn on the ignition of your vehicle, the fuel pump relay is turned on. There are different reasons due to which the fuel pump relay fails. In this article, we will discuss symptoms that your fuel relay failed, location, replacement cost, and how to diagnose it. The most common symptom of a bad fuel pump relay is a stalling or dead engine.

You will probably see these signs along with a check engine light on your dashboard. You can also notice signs like rough acceleration. The relay can fail due to many reasons, from dust to electrical power surges, anything can affect the well-being of a fuel pump relay. The engine control module does always monitors all engine sensors to ensure they do not show the wrong values. If the ECU suspects a wrong value from any sensor, it will light up the check engine light.

A check engine light is also the most common sign of all bad fuel pump symptoms. The ECU monitors the fuel pressure with the help of the fuel pressure sensor. If the fuel pump relay suddenly fails, it will light up the check engine light and store a trouble code on the fuel pressure.

An engine runs on fuel just like the heart of a human runs on oxygen and blood. Therefore, any fuel pump relay issues will affect fuel flow to the combustion chamber, and your vehicle might have problems starting. However, this can happen due to several other reasons, such as a choked fuel filter , so you should always properly diagnose your car before replacing any parts.

If the fuel pump relay may have any bad solderings inside it, it might suddenly lose the relay connection and stop delivering power to the fuel pump. The part that ensures none of this happens is the fuel pump, and it cannot work perfectly if the fuel pump relay develops any issues. A faulty fuel pump relay can also cause the engine not to start at all and be completely dead. No fuel pressure means that your engine will never start, and if the fuel pump relay failed, it would not give any power to the fuel pump to build up fuel pressure.

When you turn the ignition on in the ignition lock, you should hear a whirring noise from the rear of the car. This means that the fuel pump started building fuel pressure in the fuel rail.

If you cant hear this, there might be a problem with the fuel pump relay. You can try to listen closer around the fuel tank for any noise for seconds after turning the ignition on. In most car models, the fuel pump relay is located in a fuse box somewhere under your dashboard, but it can also be located in the fuse box in the engine bay.

For different vehicles, the fuel pump relays can be located in different places. The fuel pump relay is a small electronic device easily acquired online or at the nearest spare parts shop. Diagnosing a relay is often pretty straightforward. The fuel pump relay does often have 4 pins, and in this case, it is often easy. If your relay has more pins and not the same numbers mentioned here, you need to check a wiring diagram.