How to Replace a Fuel Filter in a Pontiac Pontiac Cars

by Contributing Writer; Updated June 12, 2017

A fuel filter is one of the most overlooked, yet most important, engine components. Gasoline contains sediments which can clog the passageways within the Pontiac car fuel injection delivery system. When a Pontiac car fuel filter becomes clogged, the vehicle's performance will seem sluggish and the engine may experience difficult starting and idling due to a insufficient fuel supply. Unlike most vehicles, where the fuel filter is located under the hood, the Pontiac car fuel filter is actually located underneath the vehicle. Thankfully, accessing the fuel filter is the hardest part of replacing the fuel filter.

Under The Hood:

 How to Replace a Fuel Filter in a Pontiac Grand Am

Disconnect the negative battery cable and remove the fuel tank's vapor pressure by slowly loosening the fuel cap. Wrap a shop towel around the fuel pressure valve as you connect a pressure gauge to the fuel pressure valve.

Put the bleed hose of the gauge into a container that will hold the fuel. Open the gauge valve to bleed the system pressure. Drain any fuel that remains in the gauge into the container too.

Disconnect the fuel line from the fuel filter with the help of a backup wrench. Compress the tabs and pull the fuel line outward to disconnect the quick-connect fitting from the fuel filter. Remove the fuel filter from the mounting bracket.

Place the new filter in the mounting bracket and use a backup wrench to connect the fuel lines. Tighten the fittings to 20 ft-lbs. Reconnect the quick-connect fitting to the fuel filter.

Connect the negative battery cable. Restore the pressure to the fuel system by turning the ignition on for 2 seconds. Turn it off for 10 seconds, then turn it on again. Check for fuel leaks in your Pontiac Grand Am.

Items you will need

  • Shop towel

  • Pressure gauge

  • Container for fuel

  • Wrench

  • New fuel filter

 How to Replace the Fuel Filter on a Firebird

Relieve the pressure in your fuel system by running the engine until it stalls out and unplugging the fuel-system fuse. The fuel relay fuse is located in your engine's fuse box.

Disconnect your battery's black (negative) cable beneath the hood of your car. This will prevent any accidental start-ups or sparks, a hazardous situation while working with the fuel system.

Raise your vehicle using a car jack supported by jack stands. It is important to wait until the engine is cool before beginning to work on your vehicle, so this step may require a brief waiting period before moving on to replace the filter.

Disconnect the old fuel filter by using needle-nose pliers to squeeze the end clamps. The filter should slide out easily and you can gently lower it to the ground, allowing excess fuel to drip into the pan. Be sure you are wearing your glasses, to avoid eye injury from fuel splatter.

Check the fuel line's O-rings for any damage or wear-down. If the O-rings are not in good condition, replace these before mounting the new filter.

Mount the new fuel filter onto the supporting brackets. The filter should comfortably rest back into the same place that the old filter occupied. There is a threaded fitting at the spot where the fuel line meets the filter. Be sure this fitting is connected to the fuel filter outlet.

Reconnect the fastener clamps to secure the filter's mount. Many filters will have arrows showing where the fasteners go, as well as what direction the filter should be facing.

Lower the car to ground level before reattaching the battery cable and fuel-system fuse. Use caution to ensure that no children or animals are nearby when you are lowering the car.

Refuel the car. Then turn the ignition key several times, waiting a few seconds between each try. Since it takes time for fuel to flow through the system, you will probably not have a successful start until the fourth or fifth try. This is a normal part of the refueling process, and once your engine starts, your fuel filter change is complete.

Items you will need

  • Safety Goggles

  • Shop Rags

  • Petroleum-Resistant Gloves

  • Drip Pan

  • Needle-Nose Pliers

  • New Firebird Fuel Filter

  • Basic Fuel Filter O-Rings

 How to Replace a Fuel Filter in a Pontiac Bonneville

Disconnect the negative battery cable. Relieve the vapor pressure in the fuel tank by slowly loosening the fuel filter cap. Wrap a shop towel around the fuel pressure valve as you connect a pressure gauge to the fuel pressure valve.

Put the bleed hose of the gauge in a container that will hold the fuel. Open the gauge valve to bleed the system pressure. Drain any fuel that remains in the gauge into the container too.

Twist the quick connector a quarter turn in each direction to loosen any dirt that may have collected on the connector. Then, use an air compressor to blow off the dirt. Squeeze the plastic tabs of the male connector and pull outward. Remove the connection from the filter inlet.

Remove the filter. Position the new filter in place, making sure the arrow on the filter points in the direction that the fuel flows. Make sure the connector is clean, and that you use a new plastic retainer on the filter.

Apply a few drops of engine oil to the male pipe end of the filter, then push the fuel line on to the filter. Listen for the plastic retainer to snap into place. Check to be sure the connector is locked by trying to pull it from the filter.

Install the threaded connection to the inlet end of the filter. Tighten it to 22 ft-lbs. Reconnect the negative battery cable. Restore the pressure to the fuel system by turning the ignition on for 2 seconds, turning it off for 10 seconds, and then turning it on again. Check for fuel leaks in your Pontiac Bonneville.

Items you will need

  • Shop towel

  • Pressure gauge

  • Wrench

  • Air compressor

  • New fuel filter

  • Plastic retainer

 How to Replace a Fuel Filter in a Pontiac Sunfire

Place one wheel chock in front of each of the Sunfire's front tires. Lift the rear of the Sunfire with a floor jack. Then support the weight of the vehicle with one jack stand placed under each rear axle.

Locate the fuel filter. The fuel filter is a metal cylindrical piece located underneath the Sunfire on the passenger's side of the fuel tank.

Note that one end of the fuel filter has a nut, while the other end has a clip. Use a wrench to remove the portion of the fuel line which enters the side of the fuel filter which has the nut.

Allow any fuel which is present in the line to drain into a bucket. Use a tool for quick connect fittings to release the clip on the opposite side of the fuel filter. The quick connect fitting tool is readily available at most auto parts stores, and can sometimes be rented instead of purchased. Once the fitting is released, pull the fuel line away from the filter.

Press the end of the new fuel filter that has the clip onto the fuel line until the line clicks into place. Then use a wrench to tighten the end of the other fuel line to the fuel filter.

Raise the back of the Sunfire with the floor jack.Remove the jack stands from underneath the axles. Then lower the Sunfire with the floor jack and remove the wheel chocks to complete the installation.

Items you will need

  • Wheel chocks

  • Floor jack

  • Jack stands

  • Wrench

  • Bucket

  • Quick connect fitting tool

 How to Replace the Fuel Filter on a 2002 Pontiac Grand Prix

Park the Grand Prix on a flat surface and set the parking brake. Chock the rear wheel to prevent the car from rolling backwards.

Open the hood to access the engine compartment. Disconnect the negative battery terminal with a crescent wrench. The battery will be located at the front of the engine compartment. The negative cables will be black and represented by the "minus" sign (-) on the battery.

Locate the Schrader valve on the fuel rail. It looks like the same type of valve you use to apply air to your tires. The fuel rail rail is located above the valve covers. Release the pressure of the fuel line by pressing a flathead screwdriver against the middle of the valve opening. Wipe off any fuel spilled on the engine with a clean rag.

Raise the front of the car with a jack. Raise it high enough to slide jack stands underneath the axles on both sides of the car. Lower the car to the jack.

Crawl under the car and locate the fuel filter on the driver's side. The filter is mounted along the Grand Prix's frame rail.

Place a crescent wrench on the large nut around the fuel filter. Hold the large nut with the crescent wrench and loosen the smaller nut next to it. Pull the fuel line out of the filter. Some fuel may pour out so it is best to have a small drain pan to catch it.

Squeeze the plastic clips on the inlet line of the fuel filter and pull the line away from the fuel filter. Allow the fuel line to hang over the drain pan to catch any excess fuel.

Loosen the fuel filter mounting bracket with a socket wrench. The nuts are located at the front of the filter.

Slide the old filter out of the mounting bracket. Place the new filter into the bracket.

Tighten the mounting bracket to the frame rail with a socket wrench. Ensure that the arrow is pointing toward the front of the vehicle. The arrow designates fuel flow.

Thread the outlet line onto the filter with your hands. Tighten the line to the filter with the crescent wrench. Hold the nut on the filter with another crescent wrench.

Push the inlet line onto the filter. The line will lock once it has been pushed on far enough.

Raise the car from the front with the jack. Take the jack stands away from the car. Lower the vehicle to the ground.

Connect the negative terminal to the battery. Tighten the battery cable to the terminal with a socket wrench.

Turn the ignition key to the start position. Listen for the fuel pump to engage. The fuel pump will run for five seconds and then turn off. Allowing the fuel pump to run before starting the car will prime it.

Turn the ignition key to start the vehicle. The vehicle may take a few seconds longer to start. The delay is due to air in the lines and the fuel needs to push the air out of the lines. Allow the car to idle for five minutes. Watch for any leaks around the fuel filter.

Items you will need

  • Chock

  • Flathead screwdriver

  • Rags

  • Jack

  • Jack stands

  • Socket wrench

  • Socket set

  • 2 crescent wrenches

  • Drain pan

  • New fuel filter

 How to Replace a Fuel Filter on a Pontiac G6

Removing the Fuel Filter

Unscrew the gas cap from the fuel tank nozzle. This will depressurize the fuel line.

Disconnect the negative terminal from the battery. This will isolate the electric fuel pump.

Locate the fuel filter. Trace the fuel line from the fuel tank to the front of the car. The filter will be located along the frame rail.

Disconnect the fuel lines running into the filter by separating the tabs on the quick connect fitting. Once the tabs are separated you can pull the lines off the filter. There will be two fuel lines on the filter. Mark the top line as you pull it off with a piece of masking tape. The top fuel line can be marked "top." This will make installation easier.

Unbolt the mounting bracket with a socket wrench. The filter will come out once the bracket is loosened.

Installing the Fuel Filter

Place the new filter in the mounting bracket. Tighten the mounting bracket with a socket wrench.

Slide the "top" fuel line to the top position on the filter. Push the line till the quick connect fitting snaps into place.

Connect the bottom line to the filter. Slide on till it clicks in place.

Connect the negative terminal on the battery. Tighten the gas cap back on to the fuel tank nozzle. This will help to pressurize the fuel system.

Start the car to ensure the fuel is circulating smoothly through the fuel line. Listen for any hesitation or stalling.

Items you will need

  • Masking tape

  • Socket wrench

  • Socket set

  • New fuel filter

 How to Replace a Fuel Filter on a 1999 Pontiac Grand Prix

Park the Pontiac Grand Prix on level ground in a well ventilated area. Engage the parking brake or apply tire stops to the wheels of the vehicle. Open the hood. Disconnect the negative battery cable. Unscrew the gas filler cap and allow it to remain unscrewed to relieve the gas pressure in the fueling system.

Crawl underneath the Grand Prix from the rear of the vehicle. Locate the the fuel tank below the trunk area. Locate the fuel filter toward the rear of the fuel tank. The fuel filter should be attached to a black hose, which is the fuel line and is a few inches away from the fuel tank. The fuel line should run from the fuel tank toward the front of the vehicle to the engine.

Inspect the fuel filter, which is shaped like a cylinder and partially enclosed within a metal bracket. Loosen the metal mounting bracket with a flathead screwdriver. Pry open the mounting bracket and expose the fuel filter completely.

Loosen the fuel line from the fuel filter with the use of an adjustable wrench. Depending on how tight the fuel filter is connected to the fuel line, you may need to use two adjustable wrenches--one to stabilize the fuel filter and the other to turn the fuel line counterclockwise. Once the fuel line has been loosened, it exposes a set of quick-release fittings that secure the fuel filter to the fuel line. Use your hands to squeeze the quick-release fittings together until the fittings disconnect the fuel line from the fuel filter completely. Repeat this procedure with the opposite side of the filter. Discard the used fuel filter once it has been disconnected.

Align the new filter with the quick-release fittings. Push the filter and the fittings together. Continue to apply pressure until you hear an audible click. Tighten the fuel line to the fuel filter with the use of an adjustable wrench. Ensure the fuel line is attached to the fuel filter tightly.

Secure the fuel filter to the mounting bracket with a flathead screwdriver. The mounting bracket should come together around the fuel filter. Make sure the fuel filter is snugly secured by the mounting bracket. Crawl from underneath the vehicle. Reconnect the negative battery cable to the battery unit. Screw the gas filler cap back in place over the fuel tank.

Items you will need

  • New fuel filter

  • Flathead screwdriver

  • Adjustable wrench

  • Protective eye wear

  • Gloves

About the Author

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