Throttle Body Unit

TBI Mounting:

REMOVE OR DISCONNECT
1. Air cleaner assembly and discard gasket.
2. Electrical connectors from idle air control valve (IAC), throttle position sensor (TPS), and fuel injectors (squeeze plastic tabs on injector connector and pull straight up).
3. Grommet with injector wires and lay aside.
4. Throttle linkage, return spring(s), transmission control cable, and cruise control (wherever applicable).
5. Vacuum hoses, noting position of hoses.
6. Inlet and outlet fuel lines.

NOTE Relieve fuel pressure before disconnecting fuel lines and use a back-up wrench on inlet and outlet nuts.

7. Fuel line O-rings from fuel nuts and discard.
8. TBI unit mounting hardware.
9. TBI unit.

NOTE To prevent damage to the throttle valve, it is essential that the unit be placed on a holding fixture, before performing service.

10 TBI flange (manifold mounting) gasket.

NOTE Before removing old gasket from surface of intake manifold, stuff the manifold opening with a clean rag to prevent material from entering the engine.

INSPECT
- Manifold bore for loose parts and foreign material.
- Intake manifold sealing surface for cleanliness.

INSTALL OR CONNECT
1. New TBI flange (manifold mounting) gasket.
2. TBI unit with mounting hardware. Tighten to 25.0 Nm (18.0 lb.ft.)
3. New O-rings on fuel line nuts and coat with new engine oil. Use a back-up wrench and tighten to 26.0 Nm (20.0 lb.ft.).
4. Vacuum hoses.
5. Throttle linkage, return spring(s), transmission control cable, and cruise control (wherever applicable).
6. Grommet, with injector harness, to throttle body.
7. Electrical connectors. Ensure connectors are fully seated and latched.
8. Check to see if accelerator pedal is free, by depressing pedal to the floor and releasing, while engine is "OFF".
9. Check for fuel leaks around fuel line nuts. Apply fuel pressure by turning ignition "ON" with engine "OFF".
10. Air cleaner assembly with new gasket.

NOTE: Ensure injectors wires are not pinched between TBI and air cleaner assembly.

11. Start engine check for fuel leaks.