Checking Fuel Pressure: 09 Traverse Guide

If you want to check the fuel pressure on your 09 Traverse, you'll need to get your hands on a fuel pressure gauge. This will allow you to test the fuel pressure and identify any potential issues. It's important to note that the fuel pressure should be between 56-62 PSI when the engine is off and should not drop more than 5 PSI in one minute. If the pressure drops, it could be due to a bad check valve or a leaking injector. To get an accurate reading, you might need to cycle the key a few times. Additionally, unplugging the sensor and starting the car can help determine if there's an issue with the low fuel pressure.

Fuel pressure test gauge readings

How to Test Fuel Pressure

To test the fuel pressure, you will need a fuel pressure test gauge. These can be purchased online or at an auto parts store. The test gauge will need to be connected to the fuel system's Schrader valve test port on the fuel rail. This is usually located on the fuel injector rail, which is often found on the engine near the fuel injectors.

Once the gauge is connected, start by checking the fuel pressure with the engine off. For a 2010 Chevy Traverse, the pressure should be between 58-62 PSI with the engine off. For a 2009 Chevy Traverse, the pressure should be between 56-62 PSI.

Next, turn the key to the "on" position without starting the engine. The pressure should not drop more than 5 PSI in one minute. Finally, start the engine and observe the pressure reading. It is normal for the pressure to drop when the engine is running since the fuel pump is a centrifugal pump. However, if the pressure drops too low or fluctuates significantly, it could indicate a problem with the fuel pump, fuel filter, fuel injectors, or another component in the fuel system.

Interpreting Fuel Pressure Readings

If the fuel pressure is lower than expected or fluctuates significantly, it could indicate one or more of the following issues:

• Bad check valve in the fuel pump module
• Leaking injectors
• Bad fuel tank module
• Restricted fuel feed pipe
• Poor wiring connections
• Clogged catalytic converters
• Faulty fuel pump driver module
• Faulty fuel pressure regulator

Troubleshooting Fuel Pressure Issues

If you suspect an issue with the fuel system, there are a few steps you can take to diagnose and resolve the problem:

• Check for fault codes using an OBD-II scanner. This can help identify specific issues with the fuel system or other components.
• Inspect the fuel system for any signs of leaks, clogs, or damage.
• Test the fuel pump by performing a volume test or using a fuel pressure test gauge.
• Check the fuel filter and fuel injectors for clogs or damage.
• Inspect the wiring and connections to the fuel system for any signs of corrosion or damage.
• If the problem persists, consult a professional mechanic or a Chevy Traverse forum for further troubleshooting advice.

By regularly monitoring your fuel pressure and addressing any issues, you can help ensure your vehicle's fuel system is operating efficiently and reliably.

Fuel pump replacement

If you are experiencing issues with your fuel pump, it may be time for a replacement. Here is a step-by-step guide on how to replace the fuel pump in your 2009 Chevy Traverse:

• Purchase the Correct Fuel Pump: It is important to purchase a fuel pump that is specifically designed for your vehicle. For the 2009 Chevy Traverse, you will need a fuel pump module assembly that fits the 3.6L V6 engine. You can find these fuel pumps online or at an auto parts store.
• Gather Your Tools: Before you begin, make sure you have all the necessary tools for the job. You will need a floor jack, jack stands, a new fuel pump, a fuel pressure gauge, and basic hand tools such as wrenches and screwdrivers.
• Raise the Vehicle and Drain the Fuel Tank: Park your vehicle on a level surface and engage the parking brake. Use the floor jack to raise the vehicle and securely support it with jack stands. Locate the fuel tank and drain the fuel into an approved container.
• Access the Fuel Pump: The fuel pump on the 2009 Chevy Traverse is located inside the fuel tank. Remove the fuel tank from the vehicle, following the appropriate safety procedures. Once the fuel tank is removed, you will need to detach any hoses, wires, or other components connected to the fuel pump.
• Remove the Old Fuel Pump: Carefully remove the old fuel pump from the fuel tank. Take note of the fuel pump's orientation and any mounting hardware, as you will need to install the new fuel pump in the same way.
• Install the New Fuel Pump: Insert the new fuel pump into the fuel tank, ensuring it is properly secured and aligned. Reattach any hoses, wires, or other components that were previously disconnected.
• Refill the Fuel Tank and Test: Reinstall the fuel tank into the vehicle and refill it with fresh fuel. Start the engine and use a fuel pressure gauge to ensure that the fuel pump is functioning correctly and maintaining the proper fuel pressure.
• Post-Installation Checks: After installing the new fuel pump, it is important to check for any fuel leaks and ensure that all components are securely connected. Test-drive the vehicle to confirm that the fuel pump is functioning properly and that there are no unusual noises or issues.

By following these steps, you can replace the fuel pump in your 2009 Chevy Traverse. Remember to work safely and consult a qualified mechanic if you have any questions or concerns during the process.

Fuel filter replacement

Step 1: Locate the Fuel Filter

The fuel filter is typically located along the fuel line, either under the car or in the engine bay. Check your vehicle's owner's manual for the specific location of your fuel filter.

Step 2: Depressurize the Fuel System

Before replacing the fuel filter, relieve the pressure in the fuel system to prevent fuel from spraying out when you remove the old filter. Locate the fuel pump fuse or relay in the fuse box and remove it. Then, start the engine and let it run until it stalls. This will depressurize the fuel system.

Step 3: Remove the Old Fuel Filter

Loosen the fittings on both sides of the fuel filter using a wrench or pliers. Be prepared for fuel to leak from the lines, so have a rag or bucket ready to catch any spills. If you're struggling to remove the fuel lines, a fuel line removal tool can help.

Step 4: Install the New Fuel Filter

Install the new fuel filter in the same position as the old one, ensuring the arrow on the fuel filter points towards the engine, indicating the direction of fuel flow. Secure the new filter by tightening the fittings on both sides.

Step 5: Test for Leaks

Turn the ignition key to the "on" position but do not start the engine. This will allow the fuel pump to pressurize the fuel system. Check for any leaks around the fuel filter and fittings. If leaks are present, tighten the fittings until they stop.

Dispose of the old fuel filter and any spilled fuel properly to avoid a fire hazard.

Additional Tips:

• Refer to your vehicle's service manual to determine the location of the fuel filter.
• Jack up the car if the fuel filter is located on the underside of the vehicle.
• Disconnect the battery to prevent the engine from being started during the replacement process.

Fuel pump test procedure

Step 1: Check the battery

Check the battery while cranking—it should be almost 11 volts.

Step 2: Check the fuel pressure

Put a fuel pressure gauge on the test port and turn the key to the first position. The fuel pressure should be ~60 psi. Turn the key off and check that the pressure does not drop to below 10 psi within a minute. Then, watch the gauge while cranking the engine. If the pressure bounces between 45-60 psi while the engine is cranking, there is definitely a fuel delivery problem.

Step 3: Refer to the Haynes manual

Refer to the Haynes manual for the 2009 Chevy Traverse. The manual includes a fuel pump test procedure, which is a static test for that model year.

Step 4: Perform the Haynes manual test

With the key in the 'on' position and the engine off, measure the pressure and then turn the key off and make sure the pressure does not drop more than 8 psi in 5 minutes.

Step 5: Check the fuel pump

Given the information provided by the above steps, it is likely that you have a bad fuel pump/fuel pump module.

Step 6: Check the fuel pump volume

To check the fuel pump volume, you will need to know how much volume the pump should pump and in what amount of time.

Step 7: Check the return line

Check what the return line, which is connected to the throttle body and has an electrical connector, is attached to.

Step 8: Check the fuel pressure sensor

The fuel pressure sensor is located on the fuel feed line forward of the fuel tank. It receives power and ground from the fuel pump flow control module through a vehicle wiring harness.

Fuel pressure sensor replacement

To replace the fuel pressure sensor in most vehicles, a technician must remove the fuel pump assembly from the fuel tank. Here is a step-by-step guide on how to do this:

Step 1: Relieve the residual pressure in the fuel system

Disable the fuel pump by removing the fuse and cranking the ignition.

Step 2: Disconnect the battery

Disconnect the battery.

Step 3: Access the fuel pump assembly

On some cars and SUVs, the top of the fuel tank and the fuel pump assembly are accessible from inside the passenger compartment. If this is the case, remove the back seat and an access cover in the floor below. On trucks, and on many cars, the fuel tank must be removed from underneath the vehicle in order to gain access to the fuel pump assembly.

Step 4: Unplug the wiring harness connectors

Once access to the fuel pump assembly is achieved, unplug the wiring harness connectors from the top of the assembly.

Step 5: Detach the fuel lines

Detach the fuel lines, often using a special tool for the connectors.

Step 6: Remove the fuel pump assembly

Remove the retaining ring that holds the fuel pump assembly in place and pull the assembly out of the tank.

Step 7: Remove the fuel temperature sensor

Unplug the fuel temperature sensor from the assembly.

Step 8: Install the new sensor

Attach a new sensor to the fuel pump assembly.

Step 9: Reinsert the fuel pump assembly

Insert the fuel pump assembly into the tank and secure it.

Step 10: Reattach the wiring harness connectors

Plug in the wiring harness connectors to the top of the assembly.

Step 11: Reattach the fuel lines

Reattach the fuel lines.

Step 12: Reinstall the fuel tank (if removed)

If the fuel tank was removed from the vehicle, re-install it.

Step 13: Test the system

Enable the fuel system and test it.

Troubleshooting

If you are experiencing issues with your fuel pressure, there are a few things you can do to troubleshoot the problem. First, check your fuel pressure with a fuel pressure gauge. If your fuel pressure is fluctuating or low, you may have a fuel delivery problem. You can also check for leaks by inspecting the fuel lines and connectors for any signs of damage or corrosion. If you notice any leaks, tighten the connections or replace any damaged parts. Additionally, you can test your fuel pump by performing a static test, which involves measuring the pressure with the key on and engine off, then turning the key off and ensuring the pressure does not drop more than a certain amount (specified in your vehicle's manual) in a given amount of time.

Common issues

Some common issues that may arise with the fuel pressure sensor include a check engine light, poor fuel economy, trouble starting the engine, engine misfire, and poor performance. If you are experiencing any of these issues, it is recommended to take your vehicle to a qualified technician for diagnosis and repair.

Cost of replacement

The average cost for a fuel pressure sensor replacement is between $217 and $247, including parts and labour.

Frequently asked questions