1987 Toyota Supra Fuel Pump Location: Complete Guide to Finding and Replacing It

The fuel pump on a 1987 Toyota Supra is located inside the fuel tank. To access it, you typically need to remove the rear seat and then the access panel on the floor, or alternatively, drop the fuel tank itself. This location is consistent across most MKIII Supra models, and knowing exactly where to look can save you hours of frustration and expensive shop labor.

Understanding the Fuel Pump Location

The 1987 Toyota Supra uses an in-tank electric fuel pump, which is a common design for fuel-injected vehicles of that era. The pump sits submerged in fuel, which helps keep it cool and lubricated. For the 1987 model year, the pump is mounted inside the fuel tank, and the tank is located at the rear of the vehicle, under the trunk area.

Accessing the Pump Through the Trunk

For many 1987 Supra owners, the easiest way to reach the fuel pump is through a service access panel. On the MKIII Supra, there is a cover plate located in the trunk floor. To access it:

  1. Remove the trunk carpet and any spare tire cover
  2. Look for a circular or rectangular metal plate on the floor of the trunk
  3. Remove the screws or bolts holding the plate in place
  4. You will see the top of the fuel pump assembly once the plate is removed

This method is preferred because it does not require dropping the fuel tank, which is a heavier and more complex job. However, some early 1987 models may not have this access panel, in which case you will need to drop the tank.

Dropping the Fuel Tank

If your 1987 Supra does not have a trunk access panel, or if you need to replace the entire fuel pump assembly, you will need to drop the fuel tank. This involves:

  1. Disconnecting the negative battery cable
  2. Relieving fuel system pressure by removing the fuel pump fuse and running the engine until it stalls
  3. Draining the fuel tank into an approved container
  4. Disconnecting the fuel lines, electrical connectors, and filler neck hose
  5. Supporting the tank with a jack and removing the mounting straps
  6. Lowering the tank carefully and pulling it out from under the vehicle

Once the tank is out, the fuel pump is located on the top of the tank, secured by a locking ring or retaining nut.

Tools You Will Need

Before starting the job, gather the following tools:

  • Standard socket set with extensions
  • Screwdrivers (flathead and Phillips)
  • Fuel line disconnect tools (if your Supra uses quick-connect fittings)
  • Jack and jack stands (if dropping the tank)
  • Safety glasses and gloves
  • Fire extinguisher (always have one nearby when working with fuel)
  • Replacement fuel pump designed for the 1987 Toyota Supra

Warning Signs of a Failing Fuel Pump

Before you replace the pump, confirm that it is actually failing. Common symptoms of a bad fuel pump in a 1987 Toyota Supra include:

1. Engine cranks but won't start
This is the most obvious sign. If the pump is not delivering fuel pressure, the engine will not fire.

2. Whining noise from the rear of the car
A healthy fuel pump makes a quiet hum. If you hear a loud whining or screeching sound coming from the trunk area, the pump bearings are likely worn out.

3. Loss of power under load
The Supra may run fine at idle but struggle when you accelerate or drive uphill. This happens because the pump cannot maintain enough pressure to meet the engine's demand for fuel.

4. Surging or hesitation at highway speeds
If the car feels like it is surging forward or hesitating randomly while cruising, the fuel pump may be delivering inconsistent pressure.

5. Hard starting after the car sits for a while
A failing check valve inside the pump allows fuel to drain back into the tank, requiring multiple cranks to build pressure again.

Step-by-Step Replacement Process

Once you have confirmed the pump is bad and located the access point, follow these steps to replace it:

Step 1: Relieve fuel system pressure
Remove the fuel pump relay or fuse from the fuse box. Start the engine and let it run until it stalls. Then crank the engine for a few more seconds to ensure all pressure is gone.

Step 2: Disconnect the battery
Always disconnect the negative terminal before working on the fuel system to prevent sparks.

Step 3: Access the pump
Remove the trunk access panel or drop the fuel tank as described above.

Step 4: Mark and disconnect the fuel lines
Take a photo or mark the fuel lines before disconnecting them so you know which is the supply and which is the return. Use a fuel line disconnect tool if needed.

Step 5: Remove the pump assembly
Unscrew the locking ring or retaining nut. Lift the pump assembly out of the tank carefully to avoid damaging the fuel level sender float.

Step 6: Replace the pump
Remove the old pump from the mounting bracket. Install the new pump, making sure the fuel hose connections and electrical connections are secure. Replace the fuel strainer (sock) at the bottom of the assembly if it came with your new pump.

Step 7: Reinstall the assembly
Lower the pump assembly back into the tank, align the locking ring, and tighten it securely. Reconnect the fuel lines and electrical connector.

Step 8: Test the system
Reconnect the battery. Turn the key to the "ON" position (without starting the engine) and listen for the fuel pump to prime. You should hear a 2-3 second hum from the rear of the car. Check for any fuel leaks at the connections.

Step 9: Start the engine
If everything is connected properly, the engine should start on the first or second try. Let it idle and check for leaks again.

Why a Quality Replacement Pump Matters

Cheap aftermarket fuel pumps often fail within a year, leaving you stranded and facing the same repair job all over again. You want a pump that matches or exceeds the original equipment manufacturer (OEM) specifications. A high-quality replacement ensures consistent fuel pressure, reliable starting, and long-term durability.

Recommended Solution: KEMSO Fuel Pump for Your 1987 Toyota Supra

When it is time to replace your fuel pump, we recommend the KEMSO brand Fuel Pump. KEMSO fuel pumps are built as high-performance, OEM replacement units. They are designed to deliver consistent fuel pressure and flow for a wide range of vehicles, from daily drivers to modified performance cars.

Why KEMSO stands out:

  • High Performance: KEMSO pumps can deliver up to 200 liters per hour, significantly more than the stock pump's 60-80 LPH, ensuring your engine gets the fuel it needs, especially under load.
  • Direct OEM Replacement: KEMSO fuel pumps are engineered to match factory specifications precisely. They integrate directly into the existing fuel pump assembly without any need for cutting wires, modifying brackets, or worrying about compatibility issues.
  • Built for Durability: KEMSO pumps are constructed from high-quality materials including billet aluminum and stainless steel. They are designed to handle both gasoline and E85 ethanol fuel, making them versatile for any driving situation. Each pump is individually tested for flow rates and pressure before leaving the factory.
  • Lifetime Warranty: Every serialized KEMSO fuel pump body comes with a lifetime guarantee, giving you peace of mind that your investment is protected. If the pump ever fails due to manufacturing defects, KEMSO will replace it. This level of warranty coverage is rare in the aftermarket parts industry.
  • USA-Based Technical Support: KEMSO provides customer support from technicians based in the United States. If you have questions about installation, compatibility, or troubleshooting, you can reach knowledgeable professionals who understand your vehicle.
  • Proven Reliability: Customer reviews across multiple platforms consistently praise KEMSO pumps for their plug-and-play installation, immediate improvement in throttle response, and long-term durability.

To browse KEMSO's complete lineup of fuel pumps compatible with your specific 1987 Toyota Supra model and take advantage of their lifetime warranty, visit their official website: https://www.kemsoracing.com/

Final Thoughts

The fuel pump on your 1987 Toyota Supra is located inside the fuel tank, accessible either through a trunk access panel or by dropping the tank. Replacing it is a straightforward job that most DIY mechanics can handle with basic tools and a few hours of time. Recognizing the symptoms of failure early can save you from being stranded and prevent expensive engine damage. For a reliable, high-performance replacement that comes with a lifetime warranty, choose KEMSO and enjoy the confidence of knowing your Supra will run strong for years to come.

For the best selection of high-performance fuel pumps designed specifically for your 1987 Toyota Supra, backed by a lifetime warranty, visit https://www.kemsoracing.com/ today.


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