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Home >> Pontiac >> 1988 >> Firebird Base, 5.0 E, Automatic >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 5.0L & 5.7L V8 - VINS F & 8 >> Removal & Installation >> Intake Manifold >> Removal

Intake Manifold: Removal

  1. Disconnect negative battery cable and drain cooling system. Remove air intake duct. Disconnect accelerator, T.V. and cruise control cables, if equipped.
  2. Remove air intake duct, Mass Airflow Sensor (MAF), and air intake tube. Disconnect coolant hoses at throttle body. Disconnect wiring, vacuum lines, and breather hoses from throttle body. Relieve fuel system pressure. Disconnect fuel inlet and return lines. Remove throttle body from plenum. Remove distributor shield.
  3. Disconnect cable retaining bracket. Remove throttle body retaining bolts. Disconnect Throttle Position Sensor (TPS) and Idle Air Control (IAC) valve connectors. Disconnect vacuum lines and brake vacuum lines at plenum. Disconnect canister control valve fresh air pipe.
  4. Remove right runners. Remove plenum retaining bolts and lift off plenum. Disconnect cold start valve and fuel line (if equipped). Disconnect fuel lines and injector harness connectors. Loosen fuel rail retaining bolts and raise rail. Remove left runners. Remove fuel rail and injectors as an assembly.
    NOTE: When servicing fuel rail assembly, ensure no dirt or contaminants enter fuel passages. Cap fittings and plug holes during servicing. Replace "O" rings before reinstalling fuel rail.
  5. Remove distributor cap and mark rotor position. Remove cold start valve retaining bolts, fuel supply line, and cold start valve (if equipped). Remove distributor and disconnect EGR solenoid.
  6. Disconnect heater hose at rear of intake manifold. Remove drive belt. Remove air injection pump bracket bolts and air injection pump. Disconnect coolant temperature sensor. Remove intake manifold bolts and intake manifold.
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