Acura RL. Manual - part 716

Fig. 205: Identifying O-Rings, Injectors And Fuel Rail 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

9. Install the injector clips (D).  

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

11. Install the injectors in the injector base (F).  

12. Install the fuel rail mounting nuts.  

13. Connect the connectors on the injectors.  

14. Connect the quick-connect fittings.  

15. 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.  

16. Install the intake manifold (see INSTALLATION ).  

A/F SENSOR REPLACEMENT 

Special Tools Required  

O2 sensor socket wrench. Snap-on YA8875, SP Tools 93750, or equivalent, commercially available

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

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Page 206  © 2005 Mitchell Repair Information Company, LLC. 

FRONT BANK (BANK 2) 

1. Disconnect the front A/F sensor 8P connector (A), then remove the A/F sensor (B) with an 02 sensor 

socket wrench. 

Fig. 206: Identifying Front A/F Sensor 8P Connector And A/F Sensor With Torque 
Specifications 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

2. Install the parts in the reverse order of removal.  

REAR BANK (BANK 1) 

1. Disconnect the rear A/F sensor 8P connector (A), then remove the rear A/F sensor (B) with an 02 

sensor socket wrench. 

Fig. 207: Identifying Rear A/F Sensor 8P Connector And Rear A/F Sensor With Torque 
Specifications 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

2. Install the parts in the reverse order of removal.  

SECONDARY HO2S REPLACEMENT

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

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Page 207  © 2005 Mitchell Repair Information Company, LLC. 

Special Tools Required  

O2 sensor socket wrench, Snap-on YA8875 or SWR2, or equivalent, commercially available 

FRONT BANK (BANK 2) 

1. Disconnect the front secondary HO2S 4P connector (A), then remove the front secondary HO2S (B) 

with an 02 sensor socket wrench. 

Fig. 208: Identifying Front Secondary HO2S 4P Connector And Front Secondary HO2S With 
Torque Specifications 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

2. Install the parts in the reverse order of removal.  

REAR BANK (BANK 1) 

1. Disconnect the rear secondary HO2S 4P connector (A), then remove the rear secondary HO2S (B) 

with an O2 sensor socket wrench. 

Fig. 209: Identifying Rear Secondary HO2S 4P Connector And Rear Secondary HO2S With 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

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Page 208  © 2005 Mitchell Repair Information Company, LLC. 

Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

2. Install the parts in the reverse order of removal.  

ECT SENSOR 1 REPLACEMENT 

1. Remove the engine cover (see step 1 under INTAKE MANIFOLD REMOVAL AND 

INSTALLATION ).  

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

3. Disconnect the ECT sensor 1 connector (A). 

Fig. 210: Identifying ECT Sensor 1 Connector And ECT Sensor With Torque Specifications 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

4. Remove ECT sensor 1 (B).  

5. Install the parts in the reverse order of removal with a new O-ring (C). Then refill the radiator with 

engine coolant (see COOLANT CHECK ).  

ECT SENSOR 2 REPLACEMENT 

1. Remove the throttle body (see THROTTLE BODY REMOVAL/INSTALLATION ).  

2. Disconnect the ECT sensor 2 connector (A). 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

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Page 209  © 2005 Mitchell Repair Information Company, LLC.