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How to Remove the Lower Intake Manifold in a 1999 Ford 3 8

The standard engine in a 1999 Ford Mustang is a six-cylinder, 3.8-liter engine with fuel injection. The intake manifold on a car with fuel injection distributes the combustion mixture evenly to the cylinder head intakes, and is essential for optimizing the performance of the engine. The intake manifold in a 1999 Ford with a 3.8-liter engine has an upper and lower section, which you must remove separately.

Instructions

1

Place a clean, sealable container under the radiator drain and remove the drain plug with a socket wrench. Allow the coolant to drain into the container and seal the container for later use. Replace the drain plug.

2

Remove the filler cap on the fuel tank to relieve the pressure in the fuel tank. Connect fuel pressure gauge T80L-9974-B to the pressure relief valve on the fuel supply manifold. Place the tube of the fuel pressure gauge into a container approved for gasoline and open the valve on the pressure gauge. Drain the excess fuel into the container to relieve the pressure in the fuel system.

3

Disconnect the battery cable from the negative terminal with a socket wrench. Remove the intake air temperature sensor and the air intake tube. Detach the cables for the cruise control and accelerator. Disconnect the bracket for the accelerator.

4

Detach the electrical connectors for the exhaust gas recirculation and vacuum regulator solenoids, if your vehicle is so equipped. Disconnect the electrical wires to the spark plugs and the ignition coil. Disconnect any additional vacuum lines needed to access the lower intake manifold.

5

Disconnect the positive crankcase ventilation valve from the crankcase with a socket wrench. Detach the electrical connector for the throttle position sensor and idle air control valve. Remove the exhaust gas recirculation valve. Disconnect the bracket for the wiring harness of the engine control sensor and push it out of your way.

6

Remove the upper intake manifold with a socket wrench. Detach the fuel lines from the fuel supply manifold and disconnect the electrical connector for the engine coolant temperature sensor. Remove the fuel supply manifold and fuel injectors from the lower intake manifold as an assembly.

7

Disconnect the upper radiator hose and heater hose from the radiator. Remove the lower intake manifold from the engine with a socket wrench.

Posted by Unknown at 11:00 AM

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