Acura TSX / Honda Accord CL. Manual — part 629

9. Coat the new O-rings (A) with clean engine oil, and insert the injectors (B) into the fuel rail (C).

Fig. 140: Inserting The Injectors Into The Fuel Rail

10. Install the injector clip (D).

11. Coat the injector O-rings (E) with clean engine oil.

12. Install the fuel rail insulator (F), and injectors in the injector base (G).

13. Install the fuel rail mounting nuts (H) and the ground cable bolt (G101).

14. Connect the connectors on the injectors and the engine mount control solenoid valve.

15. Connect the quick-connect fitting.

16. Turn the ignition switch ON (II), but do not operate the starter. After the fuel pump runs for about 2

seconds, the fuel rail will be pressurized. Repeat this two or three times, then check for fuel leakage.

A/F SENSOR REPLACEMENT

Special Tools Required: O2 sensor wrench, Snap-on YA8875, SP Tools 93750, or equivalent, commercially

2004 Acura TSX

2004 ENGINE PERFORMANCE PGM-FI System - TSX

available

1. Disconnect the A/F sensor 4P connector (A), then remove the A/F sensor (B).

Fig. 141: Removing The A/F Sensor

2. Install the A/F sensor in the reverse order of removal.

SECONDARY HO2S REPLACEMENT

Special Tools Required: O2 sensor wrench, Snap-on YA8875, SP Tools 93750, or equivalent, commercially
available

2004 Acura TSX

2004 ENGINE PERFORMANCE PGM-FI System - TSX

1. Pull back the carpet from the floor rail under the front edge of the front passenger seat to expose the

secondary HO2S 4P connector that is attached to the floor rail.

2. Disconnect the secondary HO2S 4P connector (A), under the passenger's seat.

Fig. 142: Disconnecting The Secondary HO2S 4P Connector

3. Remove the secondary HO2S (A), and the clips (B).

2004 Acura TSX

2004 ENGINE PERFORMANCE PGM-FI System - TSX

Fig. 143: Removing The Secondary HO2S

4. Install the secondary HO2S in the reverse order of removal.

ECT SENSOR REPLACEMENT

1. Remove the air cleaner (see AIR CLEANER REMOVAL/INSTALLATION ).

2. Remove the EVAP canister purge valve (see EVAP CANISTER PURGE VALVE

REPLACEMENT ).

3. Unbolt the under-hoot fuse/relay box bolt and move the box aside.

4. Disconnect the ECT sensor connector (A).

2004 Acura TSX

2004 ENGINE PERFORMANCE PGM-FI System - TSX