Intake Manifold: Service and Repair

Throttle Body Removal and Installation (H27 Engine)


1. Disconnect negative cable at battery.

2. Drain engine coolant.






3. Detach fuse/relay box.

4. Remove strut tower bar.






5. Disconnect accelerator cable (1) from throttle body.

6. Disconnect water hoses (2) from throttle body.

7. Remove surge tank cover.

8. Remove intake air pipe (1), surge tank pipe (2) and intake control valve (3).



9. Disconnect connectors of IP sensor (2) and IAC valve (3).

10. Disconnect ground terminal (5) from intake manifold (4).






11. Remove clamp bracket (1) and harness clamps from intake collector.

12. Disconnect connectors of EVAP canister purge valve (1) and EGR valve (5).

13. Disconnect PCV valve hose (6), ground terminal connector (7) and breather hose (3) from cylinder head and EVAP canister purge valve hose (2).

14. Detach EGR pipe (4) from exhaust manifold.

15. Remove throttle body (3) and intake collector (2) from intake manifold (1).

16. Disconnect hoses of PCV from throttle body.

17. Remove throttle body from intake collector.




Installation






1. Clean mating surfaces and install new throttle body gasket (2) to intake collector (1).


2. Install throttle body to intake collector and tighten bolts and nuts.

3. Connect PCV hose to throttle body.

4. Install throttle body and intake collector to intake manifold with new intake collector gaskets.

5. Install EGR pipe with new gaskets.

6. Connect breather hose, EVAP canister purge valve hose and PCV valve hose.

7. Connect connectors of EVAP canister purge valve and EGR valve. Fix wire harness with clamps.

8. GInstall clamp bracket to intake collector.

9.Connect ground wire connector.

10. Connect connectors of IP sensor and IAC valve.

11. Install surge tank pipe and intake control valve to intake manifold with new gaskets and intake air pipe to throttle body. Install surge tank cover.

12. Connect water hoses to throttle body.






13 Connect accelerator cable.






14.. Install strut tower bar (1) and tighten mounting bolts to 50 N~m (5.0 kg-rn, 36.5 lb-ft)


15 Install fuse/relay box.

16. Refill cooling system.

17.. Connect negative (-) cable at battery.

18. Adjust accelerator cable