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How to Wire the Injector for a 1995 Thunderbird

The Thunderbird was a series of luxury cars that Ford manufactured from 1955 to 2005. The 1995 model belongs to the tenth generation of this series, which was in production from 1989 to 1997. The 1995 Thunderbird was typically equipped with an eight-cylinder 4.6-liter engine with multi-point fuel injection. The procedure for wiring a fuel injector is the same for all Thunderbirds and Cougars with this engine.

Instructions

1

Remove the negative battery cable with a socket wrench. This prevents you from starting the engine and discharging fuel during the fuel injector installation. Remove the cap from the fuel tank to relieve the fuel tank pressure.

2

Remove the cap from the fuel pressure relief valve on the fuel rail. Connect fuel pressure gauge T80L-9974-A to the relief valve, and place the drain tube for the fuel pressure gauge into a container suitable for gasoline. Open the valve on the fuel pressure gauge to drain the fuel system. Disconnect the fuel pressure gauge from the relief valve, and replace the relief valve cap.

3

Detach the vacuum line from the fuel pressure regulator. Remove the fuel lines from the fuel rail, and unplug the electrical connectors from the fuel injectors. Disconnect the retaining bolts for the fuel rail assembly with a socket wrench, and remove the fuel rail from the fuel injectors. Pull the fuel injectors while gently rocking them back and forth to remove them from the intake manifold.

4

Coat a pair of new O-rings with light engine oil, and mount them on each fuel injector. Install the fuel injectors into their sockets on the intake manifold, and twist them back and forth gently to properly seat them.

5

Push the fuel rail down onto the fuel injectors, and ensure that you fully seat the injector O-rings into the caps on the fuel rail. Connect the retaining bolts for the fuel rail as you hold the fuel rail in position. Tighten the retaining bolts to between 71 and 106 inch-pounds with a torque wrench. Attach the fuel lines for the fuel rail, and connect the vacuum line to the fuel pressure regulator.

6

Connect the cable for the negative battery terminal with a socket wrench, and turn the ignition on to pressurize the fuel system. Correct any fuel leaks, and disconnect the negative battery terminal.

7

Attach the electrical connectors for the fuel injectors, and connect the negative battery terminal. Start the engine, and allow it to idle for two minutes. Turn the engine off, and correct any fuel leaks.