#Honda pilot vcm 2 muzzler update#
The engine problem due to piston ring alig nment appears to be correctable, and by applying a software update the problem can be prevented from recurring. Subsequently, Honda has issued service bulletins in the US and Canadian markets to fix the resulted problem, for example: Honda announced a powertrain warranty extension as a result of a settlement of a class action lawsuit. The second issue affected 1.59 million vehicles across a range of models.
#Honda pilot vcm 2 muzzler code#
When this happens the fault code could be any or a combination of P0301, P0302, P0303 and P0304 (and you should bring your vehicle to be checked for the root cause instead of, for example, replacing the spark plug to make the code disappear). Resulting effects include: excessive oil consumption, spark plug fouling, cylinder misfire, and the MIL (i.e., check engine light) would come on. Second, in some models, the piston rings of variable controlled cylinders (i.e., number 1 to 4) may rotate and align under certain conditions, causing engine oil to enter into the combustion chamber. First, the vibration is a source of material fatigue that has a negative impact on the service life of affected components, particularly the engine mount. While the VCM technology continuous to be improved, there are two potential issues. In order to reduce the amount of vibration transmitted to the passenger cabin, Honda and Acura vehicles are equipped with components (e.g., specially designed engine mounts) that can dampen the vibration when the engine switches to running on three or four of its six cylinders. Besides, there are a number of measures that are employed to smooth the activation-deactivation of cylinders – see. What are the potential issues related to VCM? Vibrations occur when some cylinders are deactivated.
Since less fuel is burnt as compared to constantly running on all six cylinders, there is also an environmental benefit.
The VCM system improves fuel economy by deactivating two or three cylinders while the vehicle is in motion. What is VCM in Honda and Acura vehicles? The two videos created by Honda and Acura explain the Variable Cylinder Management (VCM) system used in their V6 engines.
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