Replacing The Fuel Pump In Your 1991 Celica: Step-By-Step Guide

If you need to change the fuel pump in your 1991 Celica, you'll first need to disconnect the negative battery terminal and open the gas cap to release the pressure. Next, remove the rear seats and you'll see the fuel pump assembly. Disconnect the two harnesses and lines from the pump assembly, then unbolt all eight bolts. Carefully pull out the whole assembly, being mindful of the filter as fuel will leak from the old fuel pump. Now you can disconnect the upper and lower parts of the assembly, and remove the old pump. Transfer the rubber gasket, the yellowish part, and the filter to the new pump. Rewire the connection, then put the new pump into the assembly and place the assembly back in the car. Reconnect the lines and harnesses, and place the metal plate back on. Finally, start the car and check for any leaks.

Disconnect the negative battery terminal

Disconnecting the negative battery terminal is the first step in changing the fuel pump in a 1991 Celica. This is a safety precaution that needs to be taken before you begin any work on your car's electrical system.

To do this, first, locate the negative battery terminal. It will be connected to the negative (-) post on the battery. Using a wrench or socket, loosen the nut that secures the cable to the post. Do not allow the wrench or socket to come into contact with any other metal parts of the car, as this could result in a short circuit. Once the nut is loose, you can remove the cable from the battery post. Be careful not to let the cable touch any metal parts of the car, as this could also result in a short circuit.

If your battery is mounted in the engine bay, you may need to remove it to access the terminal. Make sure you disconnect the negative terminal first, as disconnecting the positive terminal first can result in a short circuit and damage to your car's electrical system.

Once the negative battery terminal is disconnected, you can proceed with the next steps of changing your fuel pump. It is important to work safely and follow the correct procedures when working on your car's electrical system to avoid injury and damage to your vehicle.

Release pressure by opening the gas lid and gas cap

To release pressure from your 1991 Celica's fuel system, start by locating the gas lid and gas cap. The gas lid is the small door on the side of the car that covers the gas cap. The gas cap is the cap that seals the fuel tank. Once you have located these, open the gas lid by pulling the lever inside your car, usually located near the driver's seat. This will reveal the gas cap.

Now, to release the pressure, open the gas cap by turning it counterclockwise. You may hear a hissing sound as the pressure is released, which is normal. Once the pressure is released, you will be able to remove the gas cap.

It is important to release the pressure in the fuel system before performing any maintenance or repairs on the fuel pump, as this will help to prevent fuel leakage and reduce the risk of injury.

Make sure you are in a well-ventilated area when performing this task, as gasoline fumes can be dangerous. It is also important to avoid any open flames or sparks, as gasoline is highly flammable. Always refer to your vehicle's manual for detailed instructions and safety precautions before attempting any repairs.

Remove rear seats

To remove the rear seats of a 1991 Celica, you'll first need to pull the back seatbacks. Then, the back seats should snap out.

Now you'll be able to see the fuel pump assembly covered by a metal plate. Pry it out with a flat-head screwdriver.

Disconnect the two harnesses from the pump assembly

To disconnect the two harnesses from the pump assembly, you will first need to locate the pump assembly. It is covered by a metal plate, which you can pry out with a flat-head screwdriver. Once you have removed the metal plate, you will see the two harnesses connected to the pump assembly.

To disconnect the harnesses, you will need to carefully release the clips or connectors that hold them in place. This can be done by gently pulling or wiggling the harnesses until they come loose. Be careful not to pull too hard, as this may damage the connectors.

Once the harnesses are disconnected, set them aside, ensuring they do not touch any metal surfaces or conductive materials that could cause a short circuit. With the harnesses disconnected, you will now have access to the pump assembly and can proceed with the next steps of the fuel pump replacement process.

It is important to note that working with fuel and electrical systems can be dangerous. Always take appropriate safety precautions, such as wearing protective gear and ensuring the vehicle's battery is disconnected before proceeding with any maintenance or repair work.

Disconnect the lines connecting to the pump

Disconnecting the lines connecting to the pump is a crucial step in changing the fuel pump of your 1991 Celica. Here is a detailed guide to help you through the process:

Firstly, locate the fuel pump assembly. It is covered by a metal plate and can be found under the rear seats of your car. Once you have identified the assembly, use a flat-head screwdriver to carefully pry out the metal plate covering it.

Now, you will see the lines connecting to the pump. There are two of them, and they need to be disconnected. The line at the back of the assembly might be a bit tricky to remove, so be patient and work on it gently until it comes off.

For the next step, you will need to disconnect the harnesses from the pump assembly. There are two harnesses to disconnect. Please make sure you do not disturb the ground or the upper rubber gasket during this process.

Once all the connections to the pump are disconnected, you can proceed to remove the pump assembly by unscrewing the bolts holding it in place. There should be eight bolts in total. After removing the bolts, carefully lift the whole assembly out, being cautious of any fuel leakage from the old fuel pump.

Now that the pump assembly is out, you can separate the bottom and upper parts of the assembly. During this step, be cautious not to damage any components, especially the rubber gasket and the filter.

Finally, with the pump assembly removed and disassembled, you can proceed to install the new pump. Remember to handle the fuel system components with care and ensure all connections are secure before starting your car.

Frequently asked questions