Replacing a faulty fuel pump is a complex process that requires careful steps and the proper tools. Ensure that the car is parked in a safe, well-ventilated area, and the engine is cold. Prepare the following: jack, jack stands, wrench set, and safety gloves. This will often fall between $200 and $1,000, with the cost differing depending on the make and model. In fact, this includes the cost of the new Fuel Pump and labor if professional help is needed for replacement.
Start by disconnecting the car battery to avoid any electrical accidents. Once the battery is disconnected, relieve the fuel pressure by locating the fuel pump fuse and running the engine until it stalls, or by using a fuel pressure relief valve. Afterward, lift the car using a jack, secure it with jack stands, and remove the fuel tank, which typically takes around 1 to 2 hours depending on the vehicle’s design.
Next, find the fuel pump inside the fuel tank. Accessing it usually involves removing the fuel tank straps and possibly the fuel lines and electrical connections. In most models, the fuel pump is held in place by a retaining ring, accessible with a wrench. For example, a 2005 Ford F-150 has a retaining ring with a diameter of 10 inches that needs special tools for safe loosening. Once the ring is removed, carefully remove the faulty pump.
Prior to installing a new one, compare the new and old pumps to ensure their size and all the respective connectors match. Install a new Fuel Pump in the reverse order it was removed, installing the retaining ring to hold the pump in place. Connect the fuel lines, electrical connections, and finally the fuel tank. Once the tank is secured, lower the car and reconnect the battery. Turn the ignition to the “on” position-no need to start the engine-just to prime the fuel system, making sure the pump is working right.
A common problem to be confronted at the time of replacement involves fuel sender units, to be inspected as well in such cases. If there’s any damage on the sender itself, there could possibly result an incorrect reading on fuel gauge. According to John T. (owner of a shop of repair) “When installing a new fuel pump at a given moment, that reduces the workload and considerable reduction in labor expenses later in a long run.”
Finally, after the ignition of the engine, look at the fuel leakages, and the fuel pressure to see if it’s in the specification. The car should be running perfectly smooth if the pump is installed correctly; that’s where you can test-run the car. In order not to have Fuel Pump breakdowns, usually doing routine checks helps keep optimal performance of the engine.