Technical Service Bulletins

Honda cold rattle

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Honda cold rattle

At cold start-up, customers may complain about a loud engine rattle that lasts for about two seconds.

The probable cause is a faulty VTC (variable timing control) actuator. This applies to all 2008 Accord L4 (two/four door) vehicles, 2009 Accord L4 two-door VIN 1HGCS1…9A000001 through 1HGCS1…9A004953, 2009 Accord L4 four-door VIN 1HGCP2…9A000001 through 1HGCP2…9A029528, and 2009 Accord L4 four-door VIN JHMCP2…9C000001 through JHMCP2…9C010096.


VTC actuator P/N 14310-R44-A01

VTC oil control solenoid valve O-ring P/N 15832-RAA-A01

Chain case O-ring P/N 91302-PNA-004

Hondabond HT liquid silicone gasket P/N 08718-0004

1. Allow the oil to drain from the VTC system by not starting the engine for at least six hours.

2. Start the cold engine and immediately listen for a loud rattle. If the loud rattle is heard and lasts for about two seconds, proceed with the repair procedure. Refer to pages 6-30 and 6-31 of the 2008-2009 Accord Service Manual, or online, enter keywords VTC ACT, and select the appropriate engine’s  VTC Actuator, Exhaust Camshaft Sprocket Replacement from the list.

NOTE: Because a new VTC actuator comes in its unlocked position, you don’t need to perform Step 3 of the VTC actuator replacement procedure, unless the VTC actuator locks during handling. A VTC actuator must be installed in its unlocked position to avoid damaging its internal locking pin.

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