Hey Acura peeps,

I got the chance to work on a RDX for the second time ever this past weekend, and it certainly wasn't as elementary as the thermostat job I did a few weeks ago The kind elderly lady had somehow accumulated 105,000 miles on her '07 RDX and needed a new water pump. 105,000 miles!

Without further ado, here is the procedure for replacing the water pump on a '07 RDX:

-----------------A Few Notes before we get Started--------------------------

Before disconnecting the battery cables make sure you have the anti theft codes for the audio/navigation system.

Except when doing electrical inspections, always turn the ignition switch to LOCK (O), ground the SCS line with the Honda Diagnostic Service (HDS) tool to take the PCM out of active status, disconnect the negative cable from the battery, then wait three minutes before starting the repair procedure. The SRS memory is not cleared even if the ignition switch is turned to LOCK (O) or the battery cables are disconnected from the battery.


1) Make sure that the ignition switch is in the LOCK (O) position.

2) Disconnect the negative battery cable. Then disconnect the positive battery cable. Remember guys: Wait at least three minutes after disconnecting the battery cables before starting the repair procedure.

3) Drain the cooling system. Be sure to properly dispose of used coolant.

4) Remove the splash shield.


**Relevant bolts and clips are shown in this illustration**

5) Move the drive belt auto tensioner using a belt tension release tool, to relieve the tension on the drive belt. Remove the drive belt.



6) Hold the water pump pulley using an air conditioning clutch holder tool.



7) Remove the water pump pulley mounting bolts. Remove the water pump pulley.

8) Remove the water pump retaining bolts. Remove the water pump from its mounting. Refer to this '07 RDX Water Pump diagram if necessary.

-Installation-

1) Installation is the reverse of the removal procedure.

2) Be sure to use a new O-ring.

3) Tighten the retaining bolts to 8.8 ft. lbs. (11.9 Nm).

4) Fill the cooling system with the proper grade and type coolant.

5) Bleed the air from the cooling system with the heater valve open.

6) Loosely install the radiator cap.

7) Start the engine and allow it to reach operating temperature. (radiator fan will come on twice)

8) Turn the engine off. Check the coolant level. Correct as required.

Warning: Removing the radiator cap while the engine is hot can cause the coolant to spray out. Always let the engine and radiator cool before removing the radiator cap.

9) Install the radiator cap. Run the engine and check for leaks.

10) You're going to need a Honda Diagnostic System (HDS) tool for this next step: Connect the HDS to the DLC.

11) Turn the ignition switch ON (II).

12) Select BODY ELECTRICAL on the HDS tool.

13) Select ADJUSTMENT in the GAUGE MENU.

14) Select RESET in the MAINTENANCE MINDER.

15) Select MAINTENANCE SUB ITEM 5 RESET.


That's the water pump replacement procedure in a nutshell. Good luck folks!