Throttle Body and Intake Manifold Removal and Installation
Throttle Body and Intake Manifold Removal and Installation
Throttle Body and Intake Manifold Components
Removal
1) Disconnect negative cable at battery.
2) Drain coolant.
WARNING:
To help avoid danger of being burned, do not remove drain plug (1) and radiator cap while engine and radiator are still hot. Scalding fluid and steam can be blown out under pressure if plug and cap are taken off too soon.
3) Remove engine cover referring to Engine Cover Removal and Installation.
4) Remove air cleaner outlet hose (1).
5) Disconnect accelerator cable from throttle body.
6) Disconnect accelerator cable (1) with cable bracket (2) from intake manifold.
7) Disconnect the following electric lead wires:
- IAC valve coupler
- TP sensor coupler
- MAF sensor coupler
- EGR valve coupler
- EVAP canister purge valve coupler
- MAP sensor coupler
- Ground terminal from throttle body
8) Disconnect the following hoses:
- Brake booster hose from intake manifold
- PCV hose from PCV valve
- Fuel pressure regulator vacuum hose from intake manifold
- Coolant hoses from throttle body and cylinder head
- Breather hose from throttle body
- Vacuum hose from EVAP canister purge valve
9) Remove throttle body (1), throttle body gasket (2) from intake manifold (3).
10) Remove intake manifold front stiffener (1) and rear stiffener (2).
11) Disconnect coolant pipe (1) from intake manifold.
12) Remove intake manifold (2) from cylinder head, and then its gasket (1).
Installation
1) Install new intake manifold gasket (1) to cylinder head.
2) Install intake manifold (2). Tighten bolts and nuts to specified torque.
Tightening torque
Intake manifold bolts and nuts (a): 25 Nm (2.5 kgf-m, 18.0 lbf-ft)
3) Connect coolant pipe (1) to intake manifold.
4) Install intake manifold front stiffener (1) and rear stiffener (2). Tighten bolts to specified torque.
Tightening torque
Intake manifold front stiffener bolts (a): 25 Nm (2.5 kgf-m, 18.0 lbf-ft)
Intake manifold rear stiffener bolts (b): 55 Nm (5.5 kgf-m, 40.0 lbf-ft)
5) Install throttle body (1) to intake manifold (3) with new gasket (2). Tighten bolts and nuts to specified torque.
Tightening torque
Throttle body bolts and nuts (a): 25 Nm (2.5 kgf-m, 18.0 lbf-ft)
6) Connect the following hoses:
- Brake booster hose to intake manifold
- PCV hose to PCV valve
- Fuel pressure regulator vacuum hose to intake manifold
- Coolant hoses to throttle body and cylinder head
- Breather hose to throttle body
- Vacuum hose to EVAP canister purge valve
7) Connect the following electric lead wires:
- lAC valve
- TP sensor
- MAF sensor
- EGR valve
- EVAP canister purge valve
- MAP sensor
- Ground terminal from throttle body
8) Connect accelerator cable (1) to throttle body and install its bracket (2) to intake manifold.
Adjust accelerator cable play, referring to Adjustments Accelerator Cable Adjustment.
9) Install air cleaner outlet hose.
10) Install engine cover referring to Engine Cover Removal and Installation.
11) Check to ensure that all removed parts are back in place.
Reinstall any necessary parts which have not been reinstalled.
12) Refill cooling system referring to Cooling System Flush and Refill.
13) Connect negative cable at battery.
14) Finally, start engine and check for engine coolant leaks.