Katerina Swanson
The fuel pump relay is a crucial component of your Chevrolet Equinox, responsible for sending an electric current to the fuel pump when you turn on the ignition. This, in turn, enables the fuel pump to deliver gasoline to the engine, allowing your car to start and run smoothly. While a fuel pump relay is not typically difficult to replace, it is essential to take certain precautions and follow the correct procedure to ensure a successful outcome.
First and foremost, it is imperative to disconnect the battery to reduce the risk of fire. Next, locate the fuel pump relay, which is usually found under the hood or dashboard near the steering wheel. Once located, remove the defective relay and install a new one in its place. Subsequently, test the fuel pressure and clear any codes with a scanner or gauge. Finally, close the vehicle's hood and test-drive the car to ensure proper operation.
It is worth noting that fuel pump relays can be prone to oxidation and rust, so regular checks and maintenance are recommended. Additionally, if you encounter issues such as an engine that cranks but won't start, irregular engine function, or sudden deceleration without braking, it may be a sign that your fuel pump relay needs attention.
| Characteristics | Values |
|---|---|
| Vehicle | 2005, 2006, 2007, 2008, 2009, 2011, 2012, 2013, 2014, 2016, 2017 Chevrolet Equinox |
| Labor Cost | $95-$371 |
| Part Cost | $365-$893 |
| Total Cost | $1,109-$1,265 |
| Fuel Pump Relay Replacement Service | Available at home or office |
| Fuel Pump Relay Location | Under the hood or under the dashboard, near the steering wheel |
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What You'll Learn
Disconnect the battery
Disconnecting the battery is the first step in replacing the fuel pump relay on a Chevy Equinox. This is a crucial safety precaution that helps to reduce the chance of a fire when working on the fuel pump.
Before beginning any work on the fuel pump relay, it is important to ensure that you have the necessary tools and safety equipment. In this case, you will need standard safety equipment, such as gloves and eye protection, as well as a basic tool kit that includes a voltmeter. It is also important to work in a well-ventilated area to minimise the risk of inhaling fumes.
Once you are equipped with the necessary tools and safety gear, you can begin by locating the battery. The battery in a Chevy Equinox is typically located in the engine bay, near the front of the vehicle. To disconnect the battery, follow these steps:
- Locate the negative terminal of the battery. This will be clearly marked, and it is important to disconnect the negative terminal before the positive terminal to reduce the risk of electrical short circuits.
- Loosen the nut or bolt that secures the negative battery cable to the terminal using the appropriate tool. You may need to use a wrench or a socket to loosen this connection. Be careful not to drop the nut or bolt into the engine bay, as it can be difficult to retrieve.
- Once the nut or bolt is loosened, carefully remove the cable from the terminal. You may need to wiggle it gently to detach it. Be cautious not to let the cable touch any metal parts of the vehicle, as this could cause a short circuit.
- Place the cable to one side, ensuring that it is secure and cannot accidentally come into contact with the battery terminal. You may want to cover the terminal with a piece of electrical tape or a protective cap for added safety.
- With the negative cable disconnected, now repeat the process for the positive cable. Again, loosen the nut or bolt securing the cable and then carefully remove the cable from the terminal. Place the cable aside, ensuring it is secure and cannot come into contact with the negative terminal or any metal parts.
With both cables now disconnected, you have successfully disconnected the battery. It is important to note that modern vehicles may have multiple batteries or auxiliary batteries, so be sure to refer to the specific instructions and diagrams for your Chevy Equinox model. Additionally, always exercise caution when working with automotive batteries, as they contain sulphuric acid, which can cause burns and damage if it comes into contact with your skin or eyes.
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Check for power to the fuel pump
To check for power to the fuel pump, you would need to check for power to the fuel pump when the issue of no power to the fuel pump occurs. The gray wire from the fuel pump relay is the power supply to the fuel pump.
If there is no power on the gray wire when cranking, you will need to check the fuel pump relay and operation. The relay will need two powers and one ground to operate. This can be done with a relay removed, checking the female pins using a voltmeter, while an assistant cranks the engine over.
In most cases, the fuel pump relay will have a constant power supply and ground even with the key turned off. Then, when the key is turned to the on position or the engine is cranked, the computer or the ignition switch will power up the third pin, activating the relay. In some cases, the computer will supply the ground going into the fuel pump relay. If this is the case, you will still need to check this as the engine is cranked.
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Check for codes in the computer
When the check engine light comes on, the onboard computer or Electronic/Engine Control Module (ECM) has detected and stored an error code or "trouble code" that identifies the issue. This could be a sensor or a failing engine part. The code can be read with an electronic scan tool or a code reader. While this will indicate the issue detected, a true diagnosis still requires an experienced professional to determine the issue and repair it.
There are several common reasons for a check engine light to come on, including:
- Loose gas cap
- Dirty mass airflow sensor
- Faulty head gasket
- Malfunction with the fuel injection system
- Damaged oxygen sensor
- Faulty emissions control part
- Defective spark plugs
If the check engine light is flashing, this indicates a severe issue and the vehicle should not be driven. This could be due to an engine misfire, which may result in unburned fuel being dumped into the exhaust system and causing damage to the catalytic converter.
To retrieve the error codes, you will need to use an OBD-II scanner. All Chevy Equinox models have an OBD-II port located under the dashboard, near the steering wheel. With the car turned off, plug the scanner into the OBD-II port and then start the engine without turning on the ignition. The scanner will then display the codes.
Once you have retrieved the codes, you can use your vehicle's manual or online resources to understand what each code means for a Chevy Equinox. Some issues can be fixed at home, such as tightening a gas cap, but others will require professional help. After addressing the issues, you can clear the codes. If you clear the codes without fixing the problem, the light will come back on.
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Check the pump's electrical circuit
To check the fuel pump electrical circuit of your Chevy Equinox, you'll need to perform a few tests.
Firstly, check for codes in the computer. If there are any codes related to the fuel pump circuit, such as P0230, it indicates an issue with the circuit that needs to be addressed.
Next, check if the fuel pump relay activates when turning the ignition on or cranking the engine. The relay should receive two power supplies when the ignition is turned on or the engine is cranked. If it's not receiving power, check the fuses and ensure they are all in good condition.
Now, check for power on the circuit when cranking the engine. This can be done by testing the voltage on the gray wire going to the fuel pump. If there is no power on this wire while cranking, move to the fuel pump relay and check for power in and out of the relay while cranking.
If there is power on the gray wire going to the fuel pump but the fuel pump is still not operating, the fuel pump may have failed and will need to be replaced.
Additionally, the fuel pump relay may require two powers and one ground to operate. This can be checked using a voltmeter on the female pins of the relay while the engine is cranked.
By performing these tests, you can diagnose and identify any issues with the fuel pump electrical circuit of your Chevy Equinox.
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Check for fuel leaks
When checking for fuel leaks in your Chevy Equinox, there are a few things to keep in mind. Firstly, it is important to inspect any fluids that may be leaking from the vehicle to ensure that it is indeed gasoline. Gasoline leaks can occur from the fuel tank or the fuel lines, and finding the origin of the leak will help determine the necessary repairs.
If you notice a strong smell of gasoline or see fuel dripping from the vehicle, especially near the rear tires or under the rear of the vehicle, this could indicate a fuel leak. One common reason for fuel leaks is a corroded or leaking gas tank. Over time, gas tanks can corrode and start to leak, especially in areas with high salt and snow levels. Additionally, the fuel tank could be punctured, which may require a complete replacement.
To check for fuel leaks, it is recommended to place the vehicle on a lift to easily inspect the fuel tank and lines for any signs of leakage. If the fuel tank is more than half full, it may need to be drained before proceeding with further inspections. Once the vehicle is on a lift, carefully inspect the ground underneath the gas tank for any signs of gasoline pooling.
If gasoline is present, the next step is to identify the source of the leak. This may involve checking the fuel tank itself, as well as the fuel lines and connections. In some cases, the fuel pump seal gasket may be leaking, or there could be a restricted evap hose causing pressure buildup and forcing fuel out of the vent valve.
It is important to note that working with the fuel system can be dangerous, and it is recommended to take the necessary precautions to prevent fires. Additionally, any signs of fuel leaks or odors should be addressed immediately, and the vehicle should not be parked inside a garage or covered structure.
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Frequently asked questions
If your engine is cranking but not starting, your engine is functioning irregularly, your car is slowing down without you braking, or your car is stopping after a short distance, you may need to replace your fuel pump relay.
The cost to replace a fuel pump relay on a Chevy Equinox ranges from $162.54 to $288.13. The cost of parts is between $23 and $893, while labor costs range from $95 to $371.
The fuel pump relay is located either under the hood or under the dashboard near the steering wheel.
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