Acura RL. Manual - part 664



Intake manifold  



Brake booster  



Brake booster hose  

Are there any leaks?  

YES - Repair or replace the damaged part(s), then go to step 4. 

NO - Go to step 2. 

2. Start the engine. Hold the engine speed at 3,000 RPM without load (in Park or neutral) until the 

radiator fan comes on, then let it idle for 1 minute.  

3. Monitor the OBD STATUS for DTC P2279 in the DTCs MENU with the HDS. 

Does the screen indicate FAILED?  

YES - Check the camshaft timing (see TIMING BELT INSTALLATION ), then go to step 4. 

NO - If the screen indicates PASSED, intermittent failure, the system is OK at this time. If the screen 
indicates NOT COMPLETED, go to step 2 and recheck. 

4. Reset the PCM with the HDS.  

5. Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).  

6. Start the engine. Hold the engine speed at 3,000 RPM without load (in Park or neutral) until the 

radiator fan comes on, then let it idle 1 minute.  

7. Check for Temporary DTCs or DTCs with the HDS. 

Is DTC P2279 indicated?  

YES - Check for vacuum leaks at the PCV valve, the PCV hose, the purge (PCS) line, the throttle 
body, the intake manifold, and the brake booster hose, then go to step 1. 

NO - Go to step 8. 

8. Monitor the OBD STATUS for DTC P2279 in the DTCs MENU with the HDS. 

Does the screen indicate PASSED?  

YES - Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 7, 
go to the indicated DTCs troubleshooting. 

NO - If the screen indicates FAILED, go to step 1. If the screen indicates NOT COMPLETED, keep 
idling until a result comes on. 

PCV VALVE INSPECTION 

1. Remove the engine cover (see IGNITION COIL REMOVAL/INSTALLATION ).  

2. Check the PCV valve (A), hoses (B), and connections for leaks or restrictions. 

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PCV System - RL

  

me 

 

Friday, June 05, 2009 2:28:31 PM

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© 2005 Mitchell Repair Information Company, LLC. 

Fig. 2: Identifying PCV Valve And Hoses 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

3. At idle, listen to the PCV valve (A) with a stethoscope as you lightly pinch the PCV hose (B) with 

your fingers or pliers several times. Each time the hose is pinched, the valve should click. 

If there is no clicking sound, check the PCV valve grommet for cracks or damage. If the grommet is 
OK, replace the PCV valve and recheck. 

Fig. 3: Pinching PCV Valve And PCV Hose 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

PCV VALVE REPLACEMENT 

1. Remove the engine cover (see IGNITION COIL REMOVAL/INSTALLATION ).  

2. Remove the bolt (A). 

NOTE:

Take care not to spill oil on the hot exhaust manifold.

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PCV System - RL

  

me 

 

Friday, June 05, 2009 2:28:31 PM

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© 2005 Mitchell Repair Information Company, LLC. 

Fig. 4: Identifying PCV Valve And Bolt With Torque Specifications 
Courtesy of AMERICAN HONDA MOTOR CO., INC. 

3. Remove the PCV valve (B).  

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

NOTE:



When installing a new PCV valve, make sure the O-rings (C) are in 
place.  



When installing a used PCV valve, use new O-rings (C).  

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PCV System - RL

  

me 

 

Friday, June 05, 2009 2:28:31 PM

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© 2005 Mitchell Repair Information Company, LLC. 

2005-08 ENGINE PERFORMANCE

PGM-FI System - RL 

COMPONENT LOCATION INDEX 

Fig. 1: Identifying PGM-FI System Component Location (1 Of 2) 
Courtesy of AMERICAN HONDA MOTOR CO., INC.

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

 

2007 Acura RL 

2005-08 ENGINE PERFORMANCE PGM-FI System - RL

  

me 

 

Friday, June 05, 2009 2:34:58 PM

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© 2005 Mitchell Repair Information Company, LLC. 

me 

 

Friday, June 05, 2009 2:35:05 PM

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© 2005 Mitchell Repair Information Company, LLC.