How to Fix a Toyota Corolla Fuel Pump
by Chris Moore
Like many vehicles, the Toyota Corolla's fuel pump is contained within a module that is stored in the fuel tank itself. Unlike many larger vehicles, you won't have to remove the fuel tank itself if you need to replace the pump. The fuel pump module is accessible from inside the car itself underneath the rear seats. Use extreme caution when working on any part of the fuel system because of its high pressure.
Accessing the Pump Module
Step 1
Remove the car's rear seat cushion by lifting it up to release the clip on each side and pulling it out.
Step 2
Unplug the fuel pump's electrical connector to depressurize the fuel system, then open the gas cap on the outside. Crank the engine for three to four seconds and look for it to stall.
Step 3
Disconnect the car's negative battery cable.
Removing the Pump Module
Step 1
Take off the fuel pump's access cover--it's either secured by butyl tape and needs prying off or has four screws you must remove.
Step 2
Unplug any more electrical connectors on the pump module, then disconnect the fuel lines--release the fitting for the return line with needle-nosed pliers and slide out the retaining clip for the pressure hose.
Step 3
Loosen the module's large screw-on ring with water pump pliers or a special tool from an auto parts store. On older models, remove the mounting screws instead.
Step 4
Withdraw the assembly with the fuel pump and fuel level sending unit out of the fuel tank.
Changing the Pump
Step 1
Release the clips for the plastic support at the bottom of the pump with a screwdriver to remove the support, then disconnect the rubber isolator, sock filter clip (this will require the screwdriver) and electrical connector.
Step 2
Remove the fuel pump from the module's main housing. Check the condition of the strainer; replace it if it is dirty.
Step 3
Install the new fuel pump onto the housing. Assemble the rest of the module in the reverse order of disassembly.
Step 4
Place the module back into the fuel tank and tighten the ring or fasten the screws. Reconnect the fuel lines and electrical connectors.
Step 5
Close the access cover to the pump and re-install the rear seats in the car. Reconnect the negative battery cable.
References
- "Chilton Toyota Corolla Repair Manual"; Jay Storer; Haynes North America; 2005
Tips
- You may need to turn the ignition switch to the On and Off positions repeatedly to re-pressurize the fuel system.
Things You'll Need
- Screwdrivers
- Needle nose pliers
- Water pump pliers
- Fuel pump
Writer Bio
Chris Moore has been contributing to eHow since 2007 and is a member of the DFW Writers' Workshop. He received a Bachelor of Arts in journalism from the University of Texas-Arlington.
