This is a general overview, and specific steps might vary slightly depending on your engine (2.3L or 3.0L):
Safety Precautions:
* Disconnect the negative battery terminal before starting any work. This prevents accidental sparks that could ignite fuel vapors.
* Work in a well-ventilated area. Fuel vapors are highly flammable.
* Wear safety glasses to protect your eyes.
* Use jack stands to safely support the vehicle. Never work under a car supported only by a jack.
* Have a fire extinguisher readily available.
General Steps (Consult your repair manual for specifics):
1. Prepare the Vehicle: Raise and securely support the vehicle on jack stands. Locate the fuel pump access panel (usually in the trunk, under the rear seat, or possibly under the car).
2. Release Fuel Pressure: This is crucial. Your repair manual will detail the process, which may involve using a fuel pressure release tool or repeatedly cranking the engine until it runs out of fuel (be careful not to over-crank).
3. Access the Fuel Pump: Remove the access panel. You'll likely need to disconnect electrical connectors and fuel lines. Some models may require dropping the fuel tank. Be extremely careful when handling fuel lines; avoid spilling any fuel.
4. Disconnect Electrical and Fuel Lines: Disconnect the electrical connector to the fuel pump, the fuel supply line, and the fuel return line. Have some rags or shop towels ready to absorb any fuel spillage. You might need special fuel line disconnect tools.
5. Remove the Fuel Pump Assembly: This is where things get more model-specific. Some Tempos might have an access plate on the top of the tank, while others may require dropping the fuel tank. If dropping the tank, you’ll need to support it carefully and disconnect fuel lines, vent lines, and possibly the fuel gauge sender.
6. Install the New Fuel Pump: Carefully install the new fuel pump assembly, ensuring it's correctly seated. Reconnect the fuel lines and electrical connector, paying attention to their proper orientation and tightness.
7. Reconnect and Test: Reassemble everything, making sure all connections are secure. Reconnect the battery. Carefully check for fuel leaks around all connections.
8. Prime the Fuel System (if necessary): Your repair manual will advise if your system requires priming after replacement (often accomplished through the use of a fuel pump primer tool or by cranking the engine).
9. Start the Engine: Once you're sure everything is secure and no leaks are present, start the engine. Listen carefully for any unusual sounds from the fuel pump or any indication of fuel leaks. Let the engine run for a few minutes to check for proper operation.
Tools You Might Need:
* Jack and jack stands
* Socket wrench set
* Wrenches (various sizes)
* Fuel line disconnect tools
* Screwdrivers
* Safety glasses
* Rags or shop towels
* Fuel pressure gauge (optional, but helpful)
* Fuel pump primer tool (optional, but may be necessary)
* New fuel pump assembly
* Repair manual specific to your 1994 Ford Tempo
Again, this is a general outline. A repair manual specific to your vehicle is essential to complete this job safely and correctly. If you're not comfortable performing this repair yourself, it's best to take your car to a qualified mechanic.
