Here's a general outline. This is NOT a substitute for a repair manual specific to your vehicle's year, engine, and trim. Consult a repair manual like a Haynes or Chilton manual for detailed instructions, diagrams, and torque specifications. Improper installation can lead to serious damage or injury.
Tools You'll Likely Need:
* Socket set (metric): Various sizes, including deep sockets.
* Wrench set (metric): Adjustable wrenches are helpful too.
* Screwdrivers: Phillips and flathead.
* Fuel pump pliers or a fuel line disconnect tool: To safely disconnect fuel lines.
* Fuel line clamps: To secure new fuel lines.
* Jack and jack stands: To safely lift the vehicle.
* Wheel chocks: For added safety.
* Safety glasses and gloves: Protect yourself.
* New fuel pump assembly: Ensure you get the correct one for your specific Jeep Grand Cherokee Limited (engine size is crucial).
* New fuel filter (recommended): Replace it while you're at it.
* Shop rags or absorbent material: To clean up any spilled fuel.
* Torque wrench: For tightening bolts to the proper specification.
General Steps (Consult your repair manual for specifics):
1. Disconnect the Battery: Disconnect the negative (-) battery terminal.
2. Lower the Fuel Tank: This is usually the most challenging part. You'll likely need to:
* Access the fuel tank from underneath the vehicle.
* Remove the fuel tank skid plate (if equipped).
* Possibly remove the exhaust system components that may interfere.
* Carefully lower the fuel tank using straps or jacking methods described in your repair manual. Be extremely careful not to damage the fuel lines. Support the tank properly to prevent it from falling.
3. Disconnect Fuel Lines: Use fuel line pliers or a disconnect tool to carefully disconnect the fuel supply and return lines. Have rags ready to absorb any spilled fuel. Note the orientation and routing of the lines before disconnecting.
4. Disconnect Electrical Connectors: Disconnect the electrical connector from the fuel pump.
5. Remove the Fuel Pump Access: There's typically an access panel or cover on top of the fuel tank where the fuel pump assembly is located. Remove it according to your repair manual.
6. Remove the Fuel Pump Assembly: Carefully remove the old fuel pump assembly. This often involves removing a retaining ring or a series of retaining clips. Again, your repair manual is critical here.
7. Install the New Fuel Pump Assembly: Install the new fuel pump assembly, ensuring it seats correctly. Make sure the new o-rings or seals are properly in place.
8. Reconnect Everything: Reassemble everything in reverse order, carefully connecting the fuel lines, electrical connectors, and access panel. Double-check that all connections are secure.
9. Raise the Fuel Tank: Carefully raise the fuel tank back into position. Secure it properly.
10. Reconnect the Battery: Reconnect the negative (-) battery terminal.
11. Check for Leaks: Before starting the vehicle, inspect all fuel lines and connections for leaks.
12. Start the Vehicle: Start the vehicle and check for proper fuel pressure. Listen for any unusual sounds coming from the fuel pump.
Important Considerations:
* Fuel Pressure: After installation, you might need a fuel pressure gauge to check the fuel pressure. This ensures the new pump is functioning correctly.
* Safety First: Working with fuel is dangerous. Take all necessary safety precautions.
* Repair Manual: This is absolutely crucial. The steps above are a generalization and may not precisely match your vehicle.
This is a complex repair. If you're not comfortable working on your vehicle, consider taking it to a qualified mechanic. Improperly installing a fuel pump can lead to serious damage to your vehicle or even injury.
