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How to Change the Fuel Injector on a 1993 Concorde 3 3

The Chrysler Concorde was a full-size, four-door sedan with front-wheel drive manufactured from 1993 to 2004. The most common engine in the 1993 model was a six-cylinder 3.3-liter engine with fuel injection. The fuel injectors send fuel to the engine and are part of the fuel rail assembly. The majority of the fuel injector replacement procedure for a 1993 Concorde deals with removing and installing the fuel rail assembly from the engine.

Instructions

1

Disconnect the negative battery cable with a socket wrench to prevent the engine from starting during the procedure. Loosen the cap on the fuel tank to relieve the pressure in the fuel tank. Remove the cap for the fuel pressure test port on the fuel rail.

2

Place the open end of the hose on tool C-4799-1 into a container approved for gasoline. Connect tool C-4799-1 to the fuel pressure test port and open the valve on the tool. Allow the fuel to drain into the container to relieve the pressure in the fuel system. Disconnect tool C-4799-1 from the fuel pressure test port and replace the cap on the fuel pressure test port.

3

Detach the air plenum from the throttle body and the air cleaner. Hold the throttle in the open position, and remove the linkages for the cruise control and throttle body from the throttle shaft.

4

Detach the electrical connectors from the exhaust gas recirculation valve and manifold absolute pressure sensor. Disconnect the vacuum hoses from the positive crankcase ventilation valve and the fuel pressure regulator. Remove the brake booster hose and throttle body purge hose from the intake manifold.

5

Detach the electrical connectors from the throttle position sensor and the idle air control motor. Disconnect the mounting screws for the exhaust gas recirculation tube with a socket wrench and remove the tube from the upper intake manifold. Disconnect the mounting bolts for the intake manifold plenum and remove the plenum from the engine.

6

Detach the fuel line from the fuel rail by pushing the quick-disconnect fitting on the fuel line with Special Quick-Connect Fitting Tool 6751. Wrap shop towels around the fuel line and disconnect the fuel line from the fuel rail. Disconnect the clamp on the fuel line with a socket wrench and remove the fuel line from its bracket.

7

Turn the fuel injectors on the fuel rail towards the center of the engine, and detach the electrical connectors from the fuel injectors. Disconnect the mounting bolts for the fuel rail and lift the fuel rail directly up from the engine.

8

Remove the retainer clip for the fuel injector and pull the injector out of the fuel rail. Install new O-rings to the new fuel injector and apply a light coat of engine oil to the upper O-ring. Install the fuel injector onto the fuel rail and attach its retainer clip. Apply a light coat of engine oil to the nozzle end of the fuel injector.

9

Complete the installation of the fuel injectors by performing steps two through six in reverse sequence. Tighten the mounting bolts for the fuel rail to 16 ft. lbs. with a torque wrench. Torque the mounting bolts for the intake manifold plenum to 21 ft. lbs. Connect the negative battery cable with a socket wrench.